// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/autocomplete/search_provider.h"

#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "base/prefs/pref_service.h"
#include "base/run_loop.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
#include "chrome/browser/autocomplete/autocomplete_controller.h"
#include "chrome/browser/autocomplete/autocomplete_input.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "chrome/browser/autocomplete/autocomplete_provider.h"
#include "chrome/browser/autocomplete/autocomplete_provider_listener.h"
#include "chrome/browser/autocomplete/history_url_provider.h"
#include "chrome/browser/history/history_service.h"
#include "chrome/browser/history/history_service_factory.h"
#include "chrome/browser/omnibox/omnibox_field_trial.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/search_engines/template_url.h"
#include "chrome/browser/search_engines/template_url_service.h"
#include "chrome/browser/search_engines/template_url_service_factory.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/metrics/entropy_provider.h"
#include "chrome/common/metrics/variations/variations_util.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/testing_browser_process.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "net/url_request/test_url_fetcher_factory.h"
#include "net/url_request/url_request_status.h"
#include "testing/gtest/include/gtest/gtest.h"


// SearchProviderTest ---------------------------------------------------------

// The following environment is configured for these tests:
// . The TemplateURL default_t_url_ is set as the default provider.
// . The TemplateURL keyword_t_url_ is added to the TemplateURLService. This
//   TemplateURL has a valid suggest and search URL.
// . The URL created by using the search term term1_ with default_t_url_ is
//   added to history.
// . The URL created by using the search term keyword_term_ with keyword_t_url_
//   is added to history.
// . test_factory_ is set as the URLFetcherFactory.
class SearchProviderTest : public testing::Test,
                           public AutocompleteProviderListener {
 public:
  struct ResultInfo {
    ResultInfo() : result_type(AutocompleteMatchType::NUM_TYPES) {
    }
    ResultInfo(GURL gurl,
               AutocompleteMatch::Type result_type,
               string16 fill_into_edit)
      : gurl(gurl),
        result_type(result_type),
        fill_into_edit(fill_into_edit) {
    }

    const GURL gurl;
    const AutocompleteMatch::Type result_type;
    const string16 fill_into_edit;
  };

  struct TestData {
    const string16 input;
    const size_t num_results;
    const ResultInfo output[3];
  };

  SearchProviderTest()
      : default_t_url_(NULL),
        term1_(ASCIIToUTF16("term1")),
        keyword_t_url_(NULL),
        keyword_term_(ASCIIToUTF16("keyword")),
        run_loop_(NULL) {
    ResetFieldTrialList();
  }

  // See description above class for what this registers.
  virtual void SetUp() OVERRIDE;
  virtual void TearDown() OVERRIDE;

  void RunTest(TestData* cases, int num_cases, bool prefer_keyword);

 protected:
  // Needed for AutocompleteFieldTrial::ActivateStaticTrials();
  scoped_ptr<base::FieldTrialList> field_trial_list_;

  // Default value used for testing.
  static const std::string kNotApplicable;

  // Adds a search for |term|, using the engine |t_url| to the history, and
  // returns the URL for that search.
  GURL AddSearchToHistory(TemplateURL* t_url, string16 term, int visit_count);

  // Looks for a match in |provider_| with |contents| equal to |contents|.
  // Sets |match| to it if found.  Returns whether |match| was set.
  bool FindMatchWithContents(const string16& contents,
                             AutocompleteMatch* match);

  // Looks for a match in |provider_| with destination |url|.  Sets |match| to
  // it if found.  Returns whether |match| was set.
  bool FindMatchWithDestination(const GURL& url, AutocompleteMatch* match);

  // AutocompleteProviderListener:
  // If we're waiting for the provider to finish, this exits the message loop.
  virtual void OnProviderUpdate(bool updated_matches) OVERRIDE;

  // Runs a nested message loop until provider_ is done. The message loop is
  // exited by way of OnProviderUpdate.
  void RunTillProviderDone();

  // Invokes Start on provider_, then runs all pending tasks.
  void QueryForInput(const string16& text,
                     bool prevent_inline_autocomplete,
                     bool prefer_keyword);

  // Calls QueryForInput(), finishes any suggest query, then if |wyt_match| is
  // non-NULL, sets it to the "what you typed" entry for |text|.
  void QueryForInputAndSetWYTMatch(const string16& text,
                                   AutocompleteMatch* wyt_match);

  // Notifies the URLFetcher for the suggest query corresponding to the default
  // search provider that it's done.
  // Be sure and wrap calls to this in ASSERT_NO_FATAL_FAILURE.
  void FinishDefaultSuggestQuery();

  void ResetFieldTrialList();

  // See description above class for details of these fields.
  TemplateURL* default_t_url_;
  const string16 term1_;
  GURL term1_url_;
  TemplateURL* keyword_t_url_;
  const string16 keyword_term_;
  GURL keyword_url_;

  content::TestBrowserThreadBundle thread_bundle_;

  // URLFetcherFactory implementation registered.
  net::TestURLFetcherFactory test_factory_;

  // Profile we use.
  TestingProfile profile_;

  // The provider.
  scoped_refptr<SearchProvider> provider_;

  // If non-NULL, OnProviderUpdate quits the current |run_loop_|.
  base::RunLoop* run_loop_;

  DISALLOW_COPY_AND_ASSIGN(SearchProviderTest);
};

// static
const std::string SearchProviderTest::kNotApplicable = "Not Applicable";

void SearchProviderTest::SetUp() {
  // Make sure that fetchers are automatically ungregistered upon destruction.
  test_factory_.set_remove_fetcher_on_delete(true);

  // We need both the history service and template url model loaded.
  ASSERT_TRUE(profile_.CreateHistoryService(true, false));
  TemplateURLServiceFactory::GetInstance()->SetTestingFactoryAndUse(
      &profile_, &TemplateURLServiceFactory::BuildInstanceFor);

  TemplateURLService* turl_model =
      TemplateURLServiceFactory::GetForProfile(&profile_);

  turl_model->Load();

  // Reset the default TemplateURL.
  TemplateURLData data;
  data.short_name = ASCIIToUTF16("t");
  data.SetURL("http://defaultturl/{searchTerms}");
  data.suggestions_url = "http://defaultturl2/{searchTerms}";
  data.instant_url = "http://does/not/exist?strk=1";
  data.search_terms_replacement_key = "strk";
  default_t_url_ = new TemplateURL(&profile_, data);
  turl_model->Add(default_t_url_);
  turl_model->SetDefaultSearchProvider(default_t_url_);
  TemplateURLID default_provider_id = default_t_url_->id();
  ASSERT_NE(0, default_provider_id);

  // Add url1, with search term term1_.
  term1_url_ = AddSearchToHistory(default_t_url_, term1_, 1);

  // Create another TemplateURL.
  data.short_name = ASCIIToUTF16("k");
  data.SetKeyword(ASCIIToUTF16("k"));
  data.SetURL("http://keyword/{searchTerms}");
  data.suggestions_url = "http://suggest_keyword/{searchTerms}";
  keyword_t_url_ = new TemplateURL(&profile_, data);
  turl_model->Add(keyword_t_url_);
  ASSERT_NE(0, keyword_t_url_->id());

  // Add a page and search term for keyword_t_url_.
  keyword_url_ = AddSearchToHistory(keyword_t_url_, keyword_term_, 1);

  // Keywords are updated by the InMemoryHistoryBackend only after the message
  // has been processed on the history thread. Block until history processes all
  // requests to ensure the InMemoryDatabase is the state we expect it.
  profile_.BlockUntilHistoryProcessesPendingRequests();

  provider_ = new SearchProvider(this, &profile_);
  provider_->kMinimumTimeBetweenSuggestQueriesMs = 0;
}

void SearchProviderTest::TearDown() {
  base::RunLoop().RunUntilIdle();

  // Shutdown the provider before the profile.
  provider_ = NULL;
}

void SearchProviderTest::RunTest(TestData* cases,
                                 int num_cases,
                                 bool prefer_keyword) {
  ACMatches matches;
  for (int i = 0; i < num_cases; ++i) {
    AutocompleteInput input(cases[i].input, string16::npos, string16(), GURL(),
                            AutocompleteInput::INVALID_SPEC, false,
                            prefer_keyword, true,
                            AutocompleteInput::ALL_MATCHES);
    provider_->Start(input, false);
    matches = provider_->matches();
    string16 diagnostic_details = ASCIIToUTF16("Input was: ") + cases[i].input +
        ASCIIToUTF16("; prefer_keyword was: ") +
        (prefer_keyword ? ASCIIToUTF16("true") : ASCIIToUTF16("false"));
    EXPECT_EQ(cases[i].num_results, matches.size()) << diagnostic_details;
    if (matches.size() == cases[i].num_results) {
      for (size_t j = 0; j < cases[i].num_results; ++j) {
        EXPECT_EQ(cases[i].output[j].gurl, matches[j].destination_url) <<
            diagnostic_details;
        EXPECT_EQ(cases[i].output[j].result_type, matches[j].type) <<
            diagnostic_details;
        EXPECT_EQ(cases[i].output[j].fill_into_edit,
                  matches[j].fill_into_edit) <<
            diagnostic_details;
        // All callers that use this helper function at the moment produce
        // matches that are always allowed to be the default match.
        EXPECT_TRUE(matches[j].allowed_to_be_default_match);
      }
    }
  }
}

void SearchProviderTest::OnProviderUpdate(bool updated_matches) {
  if (run_loop_ && provider_->done()) {
    run_loop_->Quit();
    run_loop_ = NULL;
  }
}

void SearchProviderTest::RunTillProviderDone() {
  if (provider_->done())
    return;

  base::RunLoop run_loop;
  run_loop_ = &run_loop;
  run_loop.Run();
}

void SearchProviderTest::QueryForInput(const string16& text,
                                       bool prevent_inline_autocomplete,
                                       bool prefer_keyword) {
  // Start a query.
  AutocompleteInput input(text, string16::npos, string16(), GURL(),
                          AutocompleteInput::INVALID_SPEC,
                          prevent_inline_autocomplete, prefer_keyword, true,
                          AutocompleteInput::ALL_MATCHES);
  provider_->Start(input, false);

  // RunUntilIdle so that the task scheduled by SearchProvider to create the
  // URLFetchers runs.
  base::RunLoop().RunUntilIdle();
}

void SearchProviderTest::QueryForInputAndSetWYTMatch(
    const string16& text,
    AutocompleteMatch* wyt_match) {
  QueryForInput(text, false, false);
  profile_.BlockUntilHistoryProcessesPendingRequests();
  ASSERT_NO_FATAL_FAILURE(FinishDefaultSuggestQuery());
  if (!wyt_match)
    return;
  ASSERT_GE(provider_->matches().size(), 1u);
  EXPECT_TRUE(FindMatchWithDestination(GURL(
      default_t_url_->url_ref().ReplaceSearchTerms(
          TemplateURLRef::SearchTermsArgs(text))),
      wyt_match));
}

GURL SearchProviderTest::AddSearchToHistory(TemplateURL* t_url,
                                            string16 term,
                                            int visit_count) {
  HistoryService* history =
      HistoryServiceFactory::GetForProfile(&profile_,
                                           Profile::EXPLICIT_ACCESS);
  GURL search(t_url->url_ref().ReplaceSearchTerms(
      TemplateURLRef::SearchTermsArgs(term)));
  static base::Time last_added_time;
  last_added_time = std::max(base::Time::Now(),
      last_added_time + base::TimeDelta::FromMicroseconds(1));
  history->AddPageWithDetails(search, string16(), visit_count, visit_count,
      last_added_time, false, history::SOURCE_BROWSED);
  history->SetKeywordSearchTermsForURL(search, t_url->id(), term);
  return search;
}

bool SearchProviderTest::FindMatchWithContents(const string16& contents,
                                               AutocompleteMatch* match) {
  for (ACMatches::const_iterator i = provider_->matches().begin();
       i != provider_->matches().end(); ++i) {
    if (i->contents == contents) {
      *match = *i;
      return true;
    }
  }
  return false;
}

bool SearchProviderTest::FindMatchWithDestination(const GURL& url,
                                                  AutocompleteMatch* match) {
  for (ACMatches::const_iterator i = provider_->matches().begin();
       i != provider_->matches().end(); ++i) {
    if (i->destination_url == url) {
      *match = *i;
      return true;
    }
  }
  return false;
}

void SearchProviderTest::FinishDefaultSuggestQuery() {
  net::TestURLFetcher* default_fetcher =
      test_factory_.GetFetcherByID(
          SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(default_fetcher);

  // Tell the SearchProvider the default suggest query is done.
  default_fetcher->set_response_code(200);
  default_fetcher->delegate()->OnURLFetchComplete(default_fetcher);
}

void SearchProviderTest::ResetFieldTrialList() {
  // Destroy the existing FieldTrialList before creating a new one to avoid
  // a DCHECK.
  field_trial_list_.reset();
  field_trial_list_.reset(new base::FieldTrialList(
      new metrics::SHA1EntropyProvider("foo")));
  chrome_variations::testing::ClearAllVariationParams();
  base::FieldTrial* trial = base::FieldTrialList::CreateFieldTrial(
      "AutocompleteDynamicTrial_0", "DefaultGroup");
  trial->group();
}

// Actual Tests ---------------------------------------------------------------

// Make sure we query history for the default provider and a URLFetcher is
// created for the default provider suggest results.
TEST_F(SearchProviderTest, QueryDefaultProvider) {
  string16 term = term1_.substr(0, term1_.length() - 1);
  QueryForInput(term, false, false);

  // Make sure the default providers suggest service was queried.
  net::TestURLFetcher* fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(fetcher);

  // And the URL matches what we expected.
  GURL expected_url(default_t_url_->suggestions_url_ref().ReplaceSearchTerms(
      TemplateURLRef::SearchTermsArgs(term)));
  ASSERT_TRUE(fetcher->GetOriginalURL() == expected_url);

  // Tell the SearchProvider the suggest query is done.
  fetcher->set_response_code(200);
  fetcher->delegate()->OnURLFetchComplete(fetcher);
  fetcher = NULL;

  // Run till the history results complete.
  RunTillProviderDone();

  // The SearchProvider is done. Make sure it has a result for the history
  // term term1.
  AutocompleteMatch term1_match;
  EXPECT_TRUE(FindMatchWithDestination(term1_url_, &term1_match));
  // Term1 should not have a description, it's set later.
  EXPECT_TRUE(term1_match.description.empty());

  AutocompleteMatch wyt_match;
  EXPECT_TRUE(FindMatchWithDestination(
      GURL(default_t_url_->url_ref().ReplaceSearchTerms(
          TemplateURLRef::SearchTermsArgs(term))), &wyt_match));
  EXPECT_TRUE(wyt_match.description.empty());

  // The match for term1 should be more relevant than the what you typed match.
  EXPECT_GT(term1_match.relevance, wyt_match.relevance);
  // This longer match should be inlineable.
  EXPECT_TRUE(term1_match.allowed_to_be_default_match);
  // The what you typed match should be too, of course.
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

TEST_F(SearchProviderTest, HonorPreventInlineAutocomplete) {
  string16 term = term1_.substr(0, term1_.length() - 1);
  QueryForInput(term, true, false);

  ASSERT_FALSE(provider_->matches().empty());
  ASSERT_EQ(AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
            provider_->matches()[0].type);
  EXPECT_TRUE(provider_->matches()[0].allowed_to_be_default_match);
}

// Issues a query that matches the registered keyword and makes sure history
// is queried as well as URLFetchers getting created.
TEST_F(SearchProviderTest, QueryKeywordProvider) {
  string16 term = keyword_term_.substr(0, keyword_term_.length() - 1);
  QueryForInput(keyword_t_url_->keyword() + ASCIIToUTF16(" ") + term,
                false,
                false);

  // Make sure the default providers suggest service was queried.
  net::TestURLFetcher* default_fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(default_fetcher);

  // Tell the SearchProvider the default suggest query is done.
  default_fetcher->set_response_code(200);
  default_fetcher->delegate()->OnURLFetchComplete(default_fetcher);
  default_fetcher = NULL;

  // Make sure the keyword providers suggest service was queried.
  net::TestURLFetcher* keyword_fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kKeywordProviderURLFetcherID);
  ASSERT_TRUE(keyword_fetcher);

  // And the URL matches what we expected.
  GURL expected_url(keyword_t_url_->suggestions_url_ref().ReplaceSearchTerms(
      TemplateURLRef::SearchTermsArgs(term)));
  ASSERT_TRUE(keyword_fetcher->GetOriginalURL() == expected_url);

  // Tell the SearchProvider the keyword suggest query is done.
  keyword_fetcher->set_response_code(200);
  keyword_fetcher->delegate()->OnURLFetchComplete(keyword_fetcher);
  keyword_fetcher = NULL;

  // Run till the history results complete.
  RunTillProviderDone();

  // The SearchProvider is done. Make sure it has a result for the history
  // term keyword.
  AutocompleteMatch match;
  EXPECT_TRUE(FindMatchWithDestination(keyword_url_, &match));

  // The match should have an associated keyword.
  EXPECT_FALSE(match.keyword.empty());

  // The fill into edit should contain the keyword.
  EXPECT_EQ(keyword_t_url_->keyword() + char16(' ') + keyword_term_,
            match.fill_into_edit);
}

TEST_F(SearchProviderTest, DontSendPrivateDataToSuggest) {
  // None of the following input strings should be sent to the suggest server,
  // because they may contain private data.
  const char* inputs[] = {
    "username:password",
    "http://username:password",
    "https://username:password",
    "username:password@hostname",
    "http://username:password@hostname/",
    "file://filename",
    "data://data",
    "unknownscheme:anything",
    "http://hostname/?query=q",
    "http://hostname/path#ref",
    "https://hostname/path",
  };

  for (size_t i = 0; i < arraysize(inputs); ++i) {
    QueryForInput(ASCIIToUTF16(inputs[i]), false, false);
    // Make sure the default providers suggest service was not queried.
    ASSERT_TRUE(test_factory_.GetFetcherByID(
        SearchProvider::kDefaultProviderURLFetcherID) == NULL);
    // Run till the history results complete.
    RunTillProviderDone();
  }
}

TEST_F(SearchProviderTest, DontAutocompleteURLLikeTerms) {
  AutocompleteClassifierFactory::GetInstance()->SetTestingFactoryAndUse(
      &profile_, &AutocompleteClassifierFactory::BuildInstanceFor);
  GURL url = AddSearchToHistory(default_t_url_,
                                ASCIIToUTF16("docs.google.com"), 1);

  // Add the term as a url.
  HistoryServiceFactory::GetForProfile(&profile_, Profile::EXPLICIT_ACCESS)->
      AddPageWithDetails(GURL("http://docs.google.com"), string16(), 1, 1,
                         base::Time::Now(), false, history::SOURCE_BROWSED);
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("docs"),
                                                      &wyt_match));

  // There should be two matches, one for what you typed, the other for
  // 'docs.google.com'. The search term should have a lower priority than the
  // what you typed match.
  ASSERT_EQ(2u, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(url, &term_match));
  EXPECT_GT(wyt_match.relevance, term_match.relevance);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
}

// A multiword search with one visit should not autocomplete until multiple
// words are typed.
TEST_F(SearchProviderTest, DontAutocompleteUntilMultipleWordsTyped) {
  GURL term_url(AddSearchToHistory(default_t_url_, ASCIIToUTF16("one search"),
                                   1));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("on"),
                                                      &wyt_match));
  ASSERT_EQ(2u, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(wyt_match.relevance, term_match.relevance);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);

  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("one se"),
                                                      &wyt_match));
  ASSERT_EQ(2u, provider_->matches().size());
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(term_match.relevance, wyt_match.relevance);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// A multiword search with more than one visit should autocomplete immediately.
TEST_F(SearchProviderTest, AutocompleteMultipleVisitsImmediately) {
  GURL term_url(AddSearchToHistory(default_t_url_, ASCIIToUTF16("two searches"),
                                   2));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("tw"),
                                                      &wyt_match));
  ASSERT_EQ(2u, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(term_match.relevance, wyt_match.relevance);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// Autocompletion should work at a word boundary after a space.
TEST_F(SearchProviderTest, AutocompleteAfterSpace) {
  GURL term_url(AddSearchToHistory(default_t_url_, ASCIIToUTF16("two searches"),
                                   2));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("two "),
                                                      &wyt_match));
  ASSERT_EQ(2u, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(term_match.relevance, wyt_match.relevance);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// Newer multiword searches should score more highly than older ones.
TEST_F(SearchProviderTest, ScoreNewerSearchesHigher) {
  GURL term_url_a(AddSearchToHistory(default_t_url_,
                                     ASCIIToUTF16("three searches aaa"), 1));
  GURL term_url_b(AddSearchToHistory(default_t_url_,
                                     ASCIIToUTF16("three searches bbb"), 1));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("three se"),
                                                      &wyt_match));
  ASSERT_EQ(3u, provider_->matches().size());
  AutocompleteMatch term_match_a;
  EXPECT_TRUE(FindMatchWithDestination(term_url_a, &term_match_a));
  AutocompleteMatch term_match_b;
  EXPECT_TRUE(FindMatchWithDestination(term_url_b, &term_match_b));
  EXPECT_GT(term_match_b.relevance, term_match_a.relevance);
  EXPECT_GT(term_match_a.relevance, wyt_match.relevance);
  EXPECT_TRUE(term_match_b.allowed_to_be_default_match);
  EXPECT_TRUE(term_match_a.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// An autocompleted multiword search should not be replaced by a different
// autocompletion while the user is still typing a valid prefix.
TEST_F(SearchProviderTest, DontReplacePreviousAutocompletion) {
  GURL term_url_a(AddSearchToHistory(default_t_url_,
                                     ASCIIToUTF16("four searches aaa"), 2));
  GURL term_url_b(AddSearchToHistory(default_t_url_,
                                     ASCIIToUTF16("four searches bbb"), 1));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("fo"),
                                                      &wyt_match));
  ASSERT_EQ(3u, provider_->matches().size());
  AutocompleteMatch term_match_a;
  EXPECT_TRUE(FindMatchWithDestination(term_url_a, &term_match_a));
  AutocompleteMatch term_match_b;
  EXPECT_TRUE(FindMatchWithDestination(term_url_b, &term_match_b));
  EXPECT_GT(term_match_a.relevance, wyt_match.relevance);
  EXPECT_GT(wyt_match.relevance, term_match_b.relevance);
  EXPECT_TRUE(term_match_a.allowed_to_be_default_match);
  EXPECT_TRUE(term_match_b.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);

  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("four se"),
                                                      &wyt_match));
  ASSERT_EQ(3u, provider_->matches().size());
  EXPECT_TRUE(FindMatchWithDestination(term_url_a, &term_match_a));
  EXPECT_TRUE(FindMatchWithDestination(term_url_b, &term_match_b));
  EXPECT_GT(term_match_a.relevance, wyt_match.relevance);
  EXPECT_GT(wyt_match.relevance, term_match_b.relevance);
  EXPECT_TRUE(term_match_a.allowed_to_be_default_match);
  EXPECT_TRUE(term_match_b.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// Non-completable multiword searches should not crowd out single-word searches.
TEST_F(SearchProviderTest, DontCrowdOutSingleWords) {
  GURL term_url(AddSearchToHistory(default_t_url_, ASCIIToUTF16("five"), 1));
  AddSearchToHistory(default_t_url_, ASCIIToUTF16("five searches bbb"), 1);
  AddSearchToHistory(default_t_url_, ASCIIToUTF16("five searches ccc"), 1);
  AddSearchToHistory(default_t_url_, ASCIIToUTF16("five searches ddd"), 1);
  AddSearchToHistory(default_t_url_, ASCIIToUTF16("five searches eee"), 1);
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("fi"),
                                                      &wyt_match));
  ASSERT_EQ(AutocompleteProvider::kMaxMatches + 1, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(term_match.relevance, wyt_match.relevance);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
  EXPECT_TRUE(wyt_match.allowed_to_be_default_match);
}

// Inline autocomplete matches regardless of case differences from the input.
TEST_F(SearchProviderTest, InlineMixedCaseMatches) {
  GURL term_url(AddSearchToHistory(default_t_url_, ASCIIToUTF16("FOO"), 1));
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteMatch wyt_match;
  ASSERT_NO_FATAL_FAILURE(QueryForInputAndSetWYTMatch(ASCIIToUTF16("f"),
                                                      &wyt_match));
  ASSERT_EQ(2u, provider_->matches().size());
  AutocompleteMatch term_match;
  EXPECT_TRUE(FindMatchWithDestination(term_url, &term_match));
  EXPECT_GT(term_match.relevance, wyt_match.relevance);
  EXPECT_EQ(ASCIIToUTF16("FOO"), term_match.fill_into_edit);
  EXPECT_EQ(ASCIIToUTF16("OO"), term_match.inline_autocompletion);
  EXPECT_TRUE(term_match.allowed_to_be_default_match);
}

// Verifies AutocompleteControllers return results (including keyword
// results) in the right order and set descriptions for them correctly.
TEST_F(SearchProviderTest, KeywordOrderingAndDescriptions) {
  // Add an entry that corresponds to a keyword search with 'term2'.
  AddSearchToHistory(keyword_t_url_, ASCIIToUTF16("term2"), 1);
  profile_.BlockUntilHistoryProcessesPendingRequests();

  AutocompleteController controller(&profile_, NULL,
      AutocompleteProvider::TYPE_SEARCH);
  controller.Start(AutocompleteInput(
      ASCIIToUTF16("k t"), string16::npos, string16(), GURL(),
      AutocompleteInput::INVALID_SPEC, false, false, true,
      AutocompleteInput::ALL_MATCHES));
  const AutocompleteResult& result = controller.result();

  // There should be three matches, one for the keyword history, one for
  // keyword provider's what-you-typed, and one for the default provider's
  // what you typed, in that order.
  ASSERT_EQ(3u, result.size());
  EXPECT_EQ(AutocompleteMatchType::SEARCH_HISTORY, result.match_at(0).type);
  EXPECT_EQ(AutocompleteMatchType::SEARCH_OTHER_ENGINE,
            result.match_at(1).type);
  EXPECT_EQ(AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
            result.match_at(2).type);
  EXPECT_GT(result.match_at(0).relevance, result.match_at(1).relevance);
  EXPECT_GT(result.match_at(1).relevance, result.match_at(2).relevance);
  EXPECT_TRUE(result.match_at(0).allowed_to_be_default_match);
  EXPECT_TRUE(result.match_at(1).allowed_to_be_default_match);
  EXPECT_TRUE(result.match_at(2).allowed_to_be_default_match);

  // The two keyword results should come with the keyword we expect.
  EXPECT_EQ(ASCIIToUTF16("k"), result.match_at(0).keyword);
  EXPECT_EQ(ASCIIToUTF16("k"), result.match_at(1).keyword);
  // The default provider has a different keyword.  (We don't explicitly
  // set it during this test, so all we do is assert that it's different.)
  EXPECT_NE(result.match_at(0).keyword, result.match_at(2).keyword);

  // The top result will always have a description.  The third result,
  // coming from a different provider than the first two, should also.
  // Whether the second result has one doesn't matter much.  (If it was
  // missing, people would infer that it's the same search provider as
  // the one above it.)
  EXPECT_FALSE(result.match_at(0).description.empty());
  EXPECT_FALSE(result.match_at(2).description.empty());
  EXPECT_NE(result.match_at(0).description, result.match_at(2).description);
}

TEST_F(SearchProviderTest, KeywordVerbatim) {
  TestData cases[] = {
    // Test a simple keyword input.
    { ASCIIToUTF16("k foo"), 2,
      { ResultInfo(GURL("http://keyword/foo"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo")),
        ResultInfo(GURL("http://defaultturl/k%20foo"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k foo") ) } },

    // Make sure extra whitespace after the keyword doesn't change the
    // keyword verbatim query.
    { ASCIIToUTF16("k   foo"), 2,
      { ResultInfo(GURL("http://keyword/foo"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo")),
        ResultInfo(GURL("http://defaultturl/k%20%20%20foo"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k   foo")) } },
    // Leading whitespace should be stripped before SearchProvider gets the
    // input; hence there are no tests here about how it handles those inputs.

    // But whitespace elsewhere in the query string should matter to both
    // matches.
    { ASCIIToUTF16("k  foo  bar"), 2,
      { ResultInfo(GURL("http://keyword/foo%20%20bar"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo  bar")),
        ResultInfo(GURL("http://defaultturl/k%20%20foo%20%20bar"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k  foo  bar")) } },
    // Note in the above test case we don't test trailing whitespace because
    // SearchProvider still doesn't handle this well.  See related bugs:
    // 102690, 99239, 164635.

    // Keywords can be prefixed by certain things that should get ignored
    // when constructing the keyword match.
    { ASCIIToUTF16("www.k foo"), 2,
      { ResultInfo(GURL("http://keyword/foo"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo")),
        ResultInfo(GURL("http://defaultturl/www.k%20foo"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("www.k foo")) } },
    { ASCIIToUTF16("http://k foo"), 2,
      { ResultInfo(GURL("http://keyword/foo"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo")),
        ResultInfo(GURL("http://defaultturl/http%3A//k%20foo"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("http://k foo")) } },
    { ASCIIToUTF16("http://www.k foo"), 2,
      { ResultInfo(GURL("http://keyword/foo"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k foo")),
        ResultInfo(GURL("http://defaultturl/http%3A//www.k%20foo"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("http://www.k foo")) } },

    // A keyword with no remaining input shouldn't get a keyword
    // verbatim match.
    { ASCIIToUTF16("k"), 1,
      { ResultInfo(GURL("http://defaultturl/k"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k")) } },
    { ASCIIToUTF16("k "), 1,
      { ResultInfo(GURL("http://defaultturl/k%20"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k ")) } }

    // The fact that verbatim queries to keyword are handled by KeywordProvider
    // not SearchProvider is tested in
    // chrome/browser/extensions/api/omnibox/omnibox_apitest.cc.
  };

  // Test not in keyword mode.
  RunTest(cases, arraysize(cases), false);

  // Test in keyword mode.  (Both modes should give the same result.)
  RunTest(cases, arraysize(cases), true);
}

// Ensures command-line flags are reflected in the URLs the search provider
// generates.
TEST_F(SearchProviderTest, CommandLineOverrides) {
  TemplateURLService* turl_model =
      TemplateURLServiceFactory::GetForProfile(&profile_);

  TemplateURLData data;
  data.short_name = ASCIIToUTF16("default");
  data.SetKeyword(data.short_name);
  data.SetURL("{google:baseURL}{searchTerms}");
  default_t_url_ = new TemplateURL(&profile_, data);
  turl_model->Add(default_t_url_);
  turl_model->SetDefaultSearchProvider(default_t_url_);

  CommandLine::ForCurrentProcess()->AppendSwitchASCII(switches::kGoogleBaseURL,
                                                      "http://www.bar.com/");
  CommandLine::ForCurrentProcess()->AppendSwitchASCII(
      switches::kExtraSearchQueryParams, "a=b");

  TestData cases[] = {
    { ASCIIToUTF16("k a"), 2,
      { ResultInfo(GURL("http://keyword/a"),
                   AutocompleteMatchType::SEARCH_OTHER_ENGINE,
                   ASCIIToUTF16("k a")),
        ResultInfo(GURL("http://www.bar.com/k%20a?a=b"),
                   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED,
                   ASCIIToUTF16("k a")) } },
  };

  RunTest(cases, arraysize(cases), false);
}

// Verifies Navsuggest results don't set a TemplateURL, which Instant relies on.
// Also verifies that just the *first* navigational result is listed as a match
// if suggested relevance scores were not sent.
TEST_F(SearchProviderTest, NavSuggestNoSuggestedRelevanceScores) {
  QueryForInput(ASCIIToUTF16("a.c"), false, false);

  // Make sure the default providers suggest service was queried.
  net::TestURLFetcher* fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(fetcher);

  // Tell the SearchProvider the suggest query is done.
  fetcher->set_response_code(200);
  fetcher->SetResponseString(
      "[\"a.c\",[\"a.com\", \"a.com/b\"],[\"a\", \"b\"],[],"
      "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"]}]");
  fetcher->delegate()->OnURLFetchComplete(fetcher);
  fetcher = NULL;

  // Run till the history results complete.
  RunTillProviderDone();

  // Make sure the only match is 'a.com' and it doesn't have a template_url.
  AutocompleteMatch nav_match;
  EXPECT_TRUE(FindMatchWithDestination(GURL("http://a.com"), &nav_match));
  EXPECT_TRUE(nav_match.keyword.empty());
  EXPECT_TRUE(nav_match.allowed_to_be_default_match);
  EXPECT_FALSE(FindMatchWithDestination(GURL("http://a.com/b"), &nav_match));
}

// Verifies that the most relevant suggest results are added properly.
TEST_F(SearchProviderTest, SuggestRelevance) {
  QueryForInput(ASCIIToUTF16("a"), false, false);

  // Make sure the default provider's suggest service was queried.
  net::TestURLFetcher* fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(fetcher);

  // Tell the SearchProvider the suggest query is done.
  fetcher->set_response_code(200);
  fetcher->SetResponseString("[\"a\",[\"a1\", \"a2\", \"a3\", \"a4\"]]");
  fetcher->delegate()->OnURLFetchComplete(fetcher);
  fetcher = NULL;

  // Run till the history results complete.
  RunTillProviderDone();

  // Check the expected verbatim and (first 3) suggestions' relative relevances.
  AutocompleteMatch verbatim, match_a1, match_a2, match_a3, match_a4;
  EXPECT_TRUE(FindMatchWithContents(ASCIIToUTF16("a"), &verbatim));
  EXPECT_TRUE(FindMatchWithContents(ASCIIToUTF16("a1"), &match_a1));
  EXPECT_TRUE(FindMatchWithContents(ASCIIToUTF16("a2"), &match_a2));
  EXPECT_TRUE(FindMatchWithContents(ASCIIToUTF16("a3"), &match_a3));
  EXPECT_FALSE(FindMatchWithContents(ASCIIToUTF16("a4"), &match_a4));
  EXPECT_GT(verbatim.relevance, match_a1.relevance);
  EXPECT_GT(match_a1.relevance, match_a2.relevance);
  EXPECT_GT(match_a2.relevance, match_a3.relevance);
  EXPECT_TRUE(verbatim.allowed_to_be_default_match);
  EXPECT_TRUE(match_a1.allowed_to_be_default_match);
  EXPECT_TRUE(match_a2.allowed_to_be_default_match);
  EXPECT_TRUE(match_a3.allowed_to_be_default_match);
}

// Verifies that suggest results with relevance scores are added
// properly when using the default fetcher.  When adding a new test
// case to this test, please consider adding it to the tests in
// KeywordFetcherSuggestRelevance below.
TEST_F(SearchProviderTest, DefaultFetcherSuggestRelevance) {
  struct DefaultFetcherMatch {
    std::string contents;
    bool allowed_to_be_default_match;
  };
  const DefaultFetcherMatch kEmptyMatch = { kNotApplicable, false };
  struct {
    const std::string json;
    const DefaultFetcherMatch matches[4];
    const std::string inline_autocompletion;
  } cases[] = {
    // Ensure that suggestrelevance scores reorder matches.
    { "[\"a\",[\"b\", \"c\"],[],[],{\"google:suggestrelevance\":[1, 2]}]",
      { { "a", true }, { "c", false }, { "b", false }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\", \"http://c.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2]}]",
      { { "a", true }, { "c.com", false }, { "b.com", false }, kEmptyMatch },
      std::string() },

    // Without suggested relevance scores, we should only allow one
    // navsuggest result to be be displayed.
    { "[\"a\",[\"http://b.com\", \"http://c.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"]}]",
      { { "a", true }, { "b.com", false }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that verbatimrelevance scores reorder or suppress verbatim.
    // Negative values will have no effect; the calculated value will be used.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9999,"
                             "\"google:suggestrelevance\":[9998]}]",
      { { "a", true}, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9998,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":-1,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9999,"
        "\"google:suggestrelevance\":[9998]}]",
      { { "a", true }, { "a.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9998,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      ".com" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      ".com" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":-1,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      ".com" },

    // Ensure that both types of relevance scores reorder matches together.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[9999, 9997],"
                                     "\"google:verbatimrelevance\":9998}]",
      { { "a1", true }, { "a", true }, { "a2", true }, kEmptyMatch },
      "1" },

    // Ensure that only inlinable matches may be ranked as the highest result.
    // Ignore all suggested relevance scores if this constraint is violated.
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999]}]",
      { { "a", true }, { "b", false }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999],"
                            "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "b", false }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a", true }, { "b.com", false }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "b.com", false }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that the top result is ranked as highly as calculated verbatim.
    // Ignore the suggested verbatim relevance if this constraint is violated.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[1],"
                             "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 2],"
                                     "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "a2", true }, { "a1", true }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 3],"
      "\"google:verbatimrelevance\":2}]",
      { { "a", true }, { "a2", true }, { "a1", true }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1],"
        "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "a.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2],"
        "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "a2.com", true }, { "a1.com", true }, kEmptyMatch },
      std::string() },

    // Ensure that all suggestions are considered, regardless of order.
    { "[\"a\",[\"b\", \"c\", \"d\", \"e\", \"f\", \"g\", \"h\"],[],[],"
       "{\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a", true }, { "h", false }, { "g", false }, { "f", false } },
      std::string() },
    { "[\"a\",[\"http://b.com\", \"http://c.com\", \"http://d.com\","
              "\"http://e.com\", \"http://f.com\", \"http://g.com\","
              "\"http://h.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a", true }, { "h.com", false }, { "g.com", false },
        { "f.com", false } },
      std::string() },

    // Ensure that incorrectly sized suggestion relevance lists are ignored.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1]}]",
      { { "a", true }, { "a1", true }, { "a2", true }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[9999, 1]}]",
      { { "a", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1]}]",
      { { "a", true }, { "a1.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
       "\"google:suggestrelevance\":[9999, 1]}]",
      { { "a", true }, { "a1.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that all 'verbatim' results are merged with their maximum score.
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999]}]",
      { { "a2", true }, { "a", true }, { "a1", true }, kEmptyMatch },
      "2" },
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a2", true }, { "a", true }, { "a1", true }, kEmptyMatch },
      "2" },

    // Ensure that verbatim is always generated without other suggestions.
    // TODO(msw): Ensure verbatimrelevance is respected (except suppression).
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      std::string() },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(ASCIIToUTF16("a"), false, false);
    net::TestURLFetcher* fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kDefaultProviderURLFetcherID);
    ASSERT_TRUE(fetcher);
    fetcher->set_response_code(200);
    fetcher->SetResponseString(cases[i].json);
    fetcher->delegate()->OnURLFetchComplete(fetcher);
    RunTillProviderDone();

    const std::string description = "for input with json=" + cases[i].json;
    const ACMatches& matches = provider_->matches();
    // The top match must inline and score as highly as calculated verbatim.
    ASSERT_FALSE(matches.empty());
    EXPECT_EQ(ASCIIToUTF16(cases[i].inline_autocompletion),
              matches[0].inline_autocompletion) << description;
    EXPECT_GE(matches[0].relevance, 1300) << description;

    size_t j = 0;
    // Ensure that the returned matches equal the expectations.
    for (; j < matches.size(); ++j) {
      EXPECT_EQ(ASCIIToUTF16(cases[i].matches[j].contents),
                matches[j].contents) << description;
      EXPECT_EQ(cases[i].matches[j].allowed_to_be_default_match,
                matches[j].allowed_to_be_default_match) << description;
    }
    // Ensure that no expected matches are missing.
    for (; j < ARRAYSIZE_UNSAFE(cases[i].matches); ++j)
      EXPECT_EQ(kNotApplicable, cases[i].matches[j].contents) <<
          "Case # " << i << " " << description;
  }
}

// This test is like DefaultFetcherSuggestRelevance above except it enables
// the field trial that causes the omnibox to be willing to reorder matches
// to guarantee the top result is a legal default match.  This field trial
// causes SearchProvider to allow some constraints to be violated that it
// wouldn't normally because the omnibox will fix the problems later.
TEST_F(SearchProviderTest, DefaultFetcherSuggestRelevanceWithReorder) {
  struct DefaultFetcherMatch {
    std::string contents;
    bool allowed_to_be_default_match;
  };
  const DefaultFetcherMatch kEmptyMatch = { kNotApplicable, false };
  struct {
    const std::string json;
    const DefaultFetcherMatch matches[4];
    const std::string inline_autocompletion;
  } cases[] = {
    // Ensure that suggestrelevance scores reorder matches.
    { "[\"a\",[\"b\", \"c\"],[],[],{\"google:suggestrelevance\":[1, 2]}]",
      { { "a", true }, { "c", false }, { "b", false }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\", \"http://c.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2]}]",
      { { "a", true }, { "c.com", false }, { "b.com", false }, kEmptyMatch },
      std::string() },

    // Without suggested relevance scores, we should only allow one
    // navsuggest result to be be displayed.
    { "[\"a\",[\"http://b.com\", \"http://c.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"]}]",
      { { "a", true }, { "b.com", false }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that verbatimrelevance scores reorder or suppress verbatim.
    // Negative values will have no effect; the calculated value will be used.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9999,"
                             "\"google:suggestrelevance\":[9998]}]",
      { { "a", true}, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9998,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":-1,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9999,"
        "\"google:suggestrelevance\":[9998]}]",
      { { "a", true }, { "a.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9998,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      ".com" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      ".com" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":-1,"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a.com", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      ".com" },

    // Ensure that both types of relevance scores reorder matches together.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[9999, 9997],"
                                     "\"google:verbatimrelevance\":9998}]",
      { { "a1", true }, { "a", true }, { "a2", true }, kEmptyMatch },
      "1" },

    // Allow non-inlineable matches to be the highest-scoring match but,
    // if the result set lacks a single inlineable result, abandon suggested
    // relevance scores entirely.
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999]}]",
      { { "b", false }, { "a", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999],"
                            "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "b", false }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999]}]",
      { { "b.com", false }, { "a", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a", true }, { "b.com", false }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Allow low-scoring matches.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a1", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a1", true }, { "a", true }, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[1],"
                             "\"google:verbatimrelevance\":0}]",
      { { "a1", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 2],"
                                     "\"google:verbatimrelevance\":0}]",
      { { "a2", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      "2" },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 3],"
      "\"google:verbatimrelevance\":2}]",
      { { "a2", true }, { "a", true }, { "a1", true }, kEmptyMatch },
      "2" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1],"
        "\"google:verbatimrelevance\":0}]",
      { { "a.com", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      ".com" },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2],"
        "\"google:verbatimrelevance\":0}]",
      { { "a2.com", true }, { "a1.com", true }, kEmptyMatch, kEmptyMatch },
      "2.com" },

    // Ensure that all suggestions are considered, regardless of order.
    { "[\"a\",[\"b\", \"c\", \"d\", \"e\", \"f\", \"g\", \"h\"],[],[],"
       "{\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a", true }, { "h", false }, { "g", false }, { "f", false } },
      std::string() },
    { "[\"a\",[\"http://b.com\", \"http://c.com\", \"http://d.com\","
              "\"http://e.com\", \"http://f.com\", \"http://g.com\","
              "\"http://h.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a", true }, { "h.com", false }, { "g.com", false },
        { "f.com", false } },
      std::string() },

    // Ensure that incorrectly sized suggestion relevance lists are ignored.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1]}]",
      { { "a", true }, { "a1", true }, { "a2", true }, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[9999, 1]}]",
      { { "a", true }, { "a1", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1]}]",
      { { "a", true }, { "a1.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
       "\"google:suggestrelevance\":[9999, 1]}]",
      { { "a", true }, { "a1.com", true }, kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that all 'verbatim' results are merged with their maximum score.
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999]}]",
      { { "a2", true }, { "a", true }, { "a1", true }, kEmptyMatch },
      "2" },
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a2", true }, { "a", true }, { "a1", true }, kEmptyMatch },
      "2" },

    // Ensure that verbatim is always generated without other suggestions.
    // TODO(msw): Ensure verbatimrelevance is respected (except suppression).
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a", true }, kEmptyMatch, kEmptyMatch, kEmptyMatch },
      std::string() },
  };

  std::map<std::string, std::string> params;
  params[std::string(OmniboxFieldTrial::kReorderForLegalDefaultMatchRule) +
         ":*:*"] = OmniboxFieldTrial::kReorderForLegalDefaultMatchRuleEnabled;
  ASSERT_TRUE(chrome_variations::AssociateVariationParams(
      OmniboxFieldTrial::kBundledExperimentFieldTrialName, "A", params));
  base::FieldTrialList::CreateFieldTrial(
      OmniboxFieldTrial::kBundledExperimentFieldTrialName, "A");

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(ASCIIToUTF16("a"), false, false);
    net::TestURLFetcher* fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kDefaultProviderURLFetcherID);
    ASSERT_TRUE(fetcher);
    fetcher->set_response_code(200);
    fetcher->SetResponseString(cases[i].json);
    fetcher->delegate()->OnURLFetchComplete(fetcher);
    RunTillProviderDone();

    const std::string description = "for input with json=" + cases[i].json;
    const ACMatches& matches = provider_->matches();
    // The top match must inline and score as highly as calculated verbatim.
    ASSERT_FALSE(matches.empty());
    EXPECT_EQ(ASCIIToUTF16(cases[i].inline_autocompletion),
              matches[0].inline_autocompletion) << description;

    size_t j = 0;
    // Ensure that the returned matches equal the expectations.
    for (; j < matches.size(); ++j) {
      EXPECT_EQ(ASCIIToUTF16(cases[i].matches[j].contents),
                matches[j].contents) << description;
      EXPECT_EQ(cases[i].matches[j].allowed_to_be_default_match,
                matches[j].allowed_to_be_default_match) << description;
    }
    // Ensure that no expected matches are missing.
    for (; j < ARRAYSIZE_UNSAFE(cases[i].matches); ++j)
      EXPECT_EQ(kNotApplicable, cases[i].matches[j].contents) <<
          "Case # " << i << " " << description;
  }
}

// Verifies that suggest results with relevance scores are added
// properly when using the keyword fetcher.  This is similar to the
// test DefaultFetcherSuggestRelevance above but this uses inputs that
// trigger keyword suggestions (i.e., "k a" rather than "a") and has
// different expectations (because now the results are a mix of
// keyword suggestions and default provider suggestions).  When a new
// test is added to this TEST_F, please consider if it would be
// appropriate to add to DefaultFetcherSuggestRelevance as well.
TEST_F(SearchProviderTest, KeywordFetcherSuggestRelevance) {
  struct KeywordFetcherMatch {
    std::string contents;
    bool from_keyword;
    bool allowed_to_be_default_match;
  };
  const KeywordFetcherMatch kEmptyMatch = { kNotApplicable, false, false };
  struct {
    const std::string json;
    const KeywordFetcherMatch matches[5];
    const std::string inline_autocompletion;
  } cases[] = {
    // Ensure that suggest relevance scores reorder matches and that
    // the keyword verbatim (lacking a suggested verbatim score) beats
    // the default provider verbatim.
    { "[\"a\",[\"b\", \"c\"],[],[],{\"google:suggestrelevance\":[1, 2]}]",
      { { "a",   true,  true },
        { "k a", false, true },
        { "c",   true,  false },
        { "b",   true,  false },
        kEmptyMatch },
      std::string() },
    // Again, check that relevance scores reorder matches, just this
    // time with navigation matches.  This also checks that with
    // suggested relevance scores we allow multiple navsuggest results.
    // It's odd that navsuggest results that come from a keyword
    // provider are marked as not a keyword result.  I think this
    // comes from them not going to a keyword search engine).
    // TODO(mpearson): Investigate the implications (if any) of
    // tagging these results appropriately.  If so, do it because it
    // makes more sense.
    { "[\"a\",[\"http://b.com\", \"http://c.com\", \"d\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
       "\"google:suggestrelevance\":[1301, 1302, 1303]}]",
      { { "a",     true,  true },
        { "d",     true,  false },
        { "c.com", false, false },
        { "b.com", false, false },
        { "k a",   false, true }, },
      std::string() },

    // Without suggested relevance scores, we should only allow one
    // navsuggest result to be be displayed.
    { "[\"a\",[\"http://b.com\", \"http://c.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"]}]",
      { { "a",     true,  true },
        { "b.com", false, false },
        { "k a",   false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that verbatimrelevance scores reorder or suppress verbatim.
    // Negative values will have no effect; the calculated value will be used.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9999,"
                             "\"google:suggestrelevance\":[9998]}]",
      { { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":9998,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1",  true,  true },
        { "a",   true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":-1,"
                             "\"google:suggestrelevance\":[9999]}]",
      { { "a1",  true,  true },
        { "a",   true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      "1" },
    { "[\"a\",[\"http://a.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9999,"
        "\"google:suggestrelevance\":[9998]}]",
      { { "a",     true,  true },
        { "a.com", false, true },
        { "k a",   false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that both types of relevance scores reorder matches together.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[9999, 9997],"
                                     "\"google:verbatimrelevance\":9998}]",
      { { "a1",  true,  true },
        { "a",   true,  true },
        { "a2",  true,  true },
        { "k a", false, true },
        kEmptyMatch },
      "1" },

    // Ensure that only inlinable matches may be ranked as the highest result.
    // Ignore all suggested relevance scores if this constraint is violated.
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999]}]",
      { { "a",   true,  true },
        { "b",   true,  false },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"b\"],[],[],{\"google:suggestrelevance\":[9999],"
                            "\"google:verbatimrelevance\":0}]",
      { { "a",   true,  true },
        { "b",   true,  false },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999]}]",
      { { "a",     true,  true },
        { "b.com", false, false },
        { "k a",   false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://b.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a",     true,  true },
        { "b.com", false, false },
        { "k a",   false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },

    // Ensure that the top result is ranked as highly as calculated verbatim.
    // Ignore the suggested verbatim relevance if this constraint is violated.
    // Note that keyword suggestions by default (not in suggested relevance
    // mode) score more highly than the default verbatim.
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    // Continuing the same category of tests, but make sure we keep the
    // suggested relevance scores even as we discard the verbatim relevance
    // scores.
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[1],"
                             "\"google:verbatimrelevance\":0}]",
      { { "a",   true,  true },
        { "k a", false, true },
        { "a1",   true, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 2],"
                                     "\"google:verbatimrelevance\":0}]",
      { { "a",   true,  true },
        { "k a", false, true },
        { "a2",  true,  true },
        { "a1",  true,  true },
        kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1, 3],"
      "\"google:verbatimrelevance\":2}]",
      { { "a",   true,  true },
        { "k a", false, true },
        { "a2",  true,  true },
        { "a1",  true,  true },
        kEmptyMatch },
      std::string() },

    // Ensure that all suggestions are considered, regardless of order.
    { "[\"a\",[\"b\", \"c\", \"d\", \"e\", \"f\", \"g\", \"h\"],[],[],"
       "{\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a",   true,  true },
        { "k a", false, true },
        { "h",   true,  false },
        { "g",   true,  false },
        { "f",   true,  false } },
      std::string() },
    { "[\"a\",[\"http://b.com\", \"http://c.com\", \"http://d.com\","
              "\"http://e.com\", \"http://f.com\", \"http://g.com\","
              "\"http://h.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\", \"NAVIGATION\","
                                "\"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1, 2, 3, 4, 5, 6, 7]}]",
      { { "a",     true,  true },
        { "k a",   false, true },
        { "h.com", false, false },
        { "g.com", false, false },
        { "f.com", false, false } },
      std::string() },

    // Ensure that incorrectly sized suggestion relevance lists are ignored.
    // Note that keyword suggestions by default (not in suggested relevance
    // mode) score more highly than the default verbatim.
    { "[\"a\",[\"a1\", \"a2\"],[],[],{\"google:suggestrelevance\":[1]}]",
      { { "a",   true,  true },
        { "a1",  true,  true },
        { "a2",  true,  true },
        { "k a", false, true },
        kEmptyMatch },
      std::string() },
    { "[\"a\",[\"a1\"],[],[],{\"google:suggestrelevance\":[9999, 1]}]",
      { { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    // In this case, ignored the suggested relevance scores means we keep
    // only one navsuggest result.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:suggestrelevance\":[1]}]",
      { { "a",      true,  true },
        { "a1.com", false, true },
        { "k a",    false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    { "[\"a\",[\"http://a1.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\"],"
       "\"google:suggestrelevance\":[9999, 1]}]",
      { { "a",      true,  true },
        { "a1.com", false, true },
        { "k a",    false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },

    // Ensure that all 'verbatim' results are merged with their maximum score.
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999]}]",
      { { "a2",  true,  true },
        { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch },
      "2" },
    { "[\"a\",[\"a\", \"a1\", \"a2\"],[],[],"
       "{\"google:suggestrelevance\":[9998, 9997, 9999],"
        "\"google:verbatimrelevance\":0}]",
      { { "a2",  true,  true },
        { "a",   true,  true },
        { "a1",  true,  true },
        { "k a", false, true },
        kEmptyMatch },
      "2" },

    // Ensure that verbatim is always generated without other suggestions.
    // TODO(mpearson): Ensure the value of verbatimrelevance is respected
    // (except when suggested relevances are ignored).
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":1}]",
      { { "a",   true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch, kEmptyMatch},
      std::string() },
    { "[\"a\",[],[],[],{\"google:verbatimrelevance\":0}]",
      { { "a",   true,  true },
        { "k a", false, true },
        kEmptyMatch, kEmptyMatch, kEmptyMatch},
      std::string() },

    // Check that navsuggestions will be demoted below queries.
    // (Navsuggestions are not allowed to appear first.)  In the process,
    // make sure the navsuggestions still remain in the same order.
    // First, check the situation where navsuggest scores more than verbatim
    // and there are no query suggestions.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9998, 9999]}]",
      { { "a",      true,  true },
        { "a2.com", false, true },
        { "a1.com", false, true },
        { "k a",    false, true },
        kEmptyMatch },
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9999, 9998]}]",
      { { "a",      true,  true },
        { "a1.com", false, true },
        { "a2.com", false, true },
        { "k a",    false, true },
        kEmptyMatch },
      std::string() },
    // Check when navsuggest scores more than verbatim and there is query
    // suggestion but it scores lower.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9998, 9999, 1300]}]",
      { { "a",      true,  true },
        { "a2.com", false, true },
        { "a1.com", false, true },
        { "a3",     true,  true },
        { "k a",    false, true } },
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9999, 9998, 1300]}]",
      { { "a",      true,  true },
        { "a1.com", false, true },
        { "a2.com", false, true },
        { "a3",     true,  true },
        { "k a",    false, true } },
      std::string() },
    // Check when navsuggest scores more than a query suggestion.  There is
    // a verbatim but it scores lower.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9998, 9999, 9997]}]",
      { { "a3",     true,  true },
        { "a2.com", false, true },
        { "a1.com", false, true },
        { "a",      true,  true },
        { "k a",    false, true } },
      "3" },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9999, 9998, 9997]}]",
      { { "a3",     true,  true },
        { "a1.com", false, true },
        { "a2.com", false, true },
        { "a",      true,  true },
        { "k a",    false, true } },
      "3" },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9998, 9999, 9997]}]",
      { { "a3",     true,  true },
        { "a2.com", false, true },
        { "a1.com", false, true },
        { "k a",    false, true },
        kEmptyMatch },
      "3" },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9999, 9998, 9997]}]",
      { { "a3",     true,  true },
        { "a1.com", false, true },
        { "a2.com", false, true },
        { "k a",    false, true },
        kEmptyMatch },
      "3" },
    // Check when there is neither verbatim nor a query suggestion that,
    // because we can't demote navsuggestions below a query suggestion,
    // we abandon suggested relevance scores entirely.  One consequence is
    // that this means we restore the keyword verbatim match.  Note
    // that in this case of abandoning suggested relevance scores, we still
    // keep the navsuggestions in the same order, but we revert to only allowing
    // one navigation to appear because the scores are completely local.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9998, 9999]}]",
      { { "a",      true,  true },
        { "a2.com", false, true },
        { "k a",    false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\"],"
        "\"google:verbatimrelevance\":0,"
        "\"google:suggestrelevance\":[9999, 9998]}]",
      { { "a",      true,  true },
        { "a1.com", false, true },
        { "k a",    false, true },
        kEmptyMatch, kEmptyMatch},
      std::string() },
    // More checks that everything works when it's not necessary to demote.
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9997, 9998, 9999]}]",
      { { "a3",     true,  true },
        { "a2.com", false, true },
        { "a1.com", false, true },
        { "a",      true,  true },
        { "k a",    false, true } },
      "3" },
    { "[\"a\",[\"http://a1.com\", \"http://a2.com\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"NAVIGATION\", \"NAVIGATION\", \"QUERY\"],"
        "\"google:verbatimrelevance\":9990,"
        "\"google:suggestrelevance\":[9998, 9997, 9999]}]",
      { { "a3",     true,  true },
        { "a1.com", false, true },
        { "a2.com", false, true },
        { "a",      true,  true },
        { "k a",    false, true } },
      "3" },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(ASCIIToUTF16("k a"), false, true);

    // Set up a default fetcher with no results.
    net::TestURLFetcher* default_fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kDefaultProviderURLFetcherID);
    ASSERT_TRUE(default_fetcher);
    default_fetcher->set_response_code(200);
    default_fetcher->delegate()->OnURLFetchComplete(default_fetcher);
    default_fetcher = NULL;

    // Set up a keyword fetcher with provided results.
    net::TestURLFetcher* keyword_fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kKeywordProviderURLFetcherID);
    ASSERT_TRUE(keyword_fetcher);
    keyword_fetcher->set_response_code(200);
    keyword_fetcher->SetResponseString(cases[i].json);
    keyword_fetcher->delegate()->OnURLFetchComplete(keyword_fetcher);
    keyword_fetcher = NULL;
    RunTillProviderDone();

    const std::string description = "for input with json=" + cases[i].json;
    const ACMatches& matches = provider_->matches();
    // The top match must inline and score as highly as calculated verbatim.
    ASSERT_FALSE(matches.empty());
    EXPECT_EQ(ASCIIToUTF16(cases[i].inline_autocompletion),
              matches[0].inline_autocompletion) << description;
    EXPECT_GE(matches[0].relevance, 1300) << description;

    size_t j = 0;
    // Ensure that the returned matches equal the expectations.
    for (; j < matches.size(); ++j) {
      EXPECT_EQ(ASCIIToUTF16(cases[i].matches[j].contents),
                matches[j].contents) << description;
      EXPECT_EQ(cases[i].matches[j].from_keyword,
                matches[j].keyword == ASCIIToUTF16("k")) << description;
      EXPECT_EQ(cases[i].matches[j].allowed_to_be_default_match,
                matches[j].allowed_to_be_default_match) << description;
    }
    // Ensure that no expected matches are missing.
    for (; j < ARRAYSIZE_UNSAFE(cases[i].matches); ++j)
      EXPECT_EQ(kNotApplicable, cases[i].matches[j].contents) <<
          "Case # " << i << " " << description;
  }
}

TEST_F(SearchProviderTest, LocalAndRemoteRelevances) {
  // Enable Instant Extended in order to allow an increased number of
  // suggestions.
  chrome::EnableInstantExtendedAPIForTesting();

  // We hardcode the string "term1" below, so ensure that the search term that
  // got added to history already is that string.
  ASSERT_EQ(ASCIIToUTF16("term1"), term1_);
  string16 term = term1_.substr(0, term1_.length() - 1);

  AddSearchToHistory(default_t_url_, term + ASCIIToUTF16("2"), 2);
  profile_.BlockUntilHistoryProcessesPendingRequests();

  struct {
    const string16 input;
    const std::string json;
    const std::string matches[6];
  } cases[] = {
    // The history results outscore the default verbatim score.  term2 has more
    // visits so it outscores term1.  The suggestions are still returned since
    // they're server-scored.
    { term,
      "[\"term\",[\"a1\", \"a2\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"QUERY\"],"
        "\"google:suggestrelevance\":[1, 2, 3]}]",
      { "term2", "term1", "term", "a3", "a2", "a1" } },
    // Because we already have three suggestions by the time we see the history
    // results, they don't get returned.
    { term,
      "[\"term\",[\"a1\", \"a2\", \"a3\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"QUERY\"],"
        "\"google:verbatimrelevance\":1450,"
        "\"google:suggestrelevance\":[1440, 1430, 1420]}]",
      { "term", "a1", "a2", "a3", kNotApplicable, kNotApplicable } },
    // If we only have two suggestions, we have room for a history result.
    { term,
      "[\"term\",[\"a1\", \"a2\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\"],"
        "\"google:verbatimrelevance\":1450,"
        "\"google:suggestrelevance\":[1430, 1410]}]",
      { "term", "a1", "a2", "term2", kNotApplicable, kNotApplicable } },
    // If we have more than three suggestions, they should all be returned as
    // long as we have enough total space for them.
    { term,
      "[\"term\",[\"a1\", \"a2\", \"a3\", \"a4\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"QUERY\", \"QUERY\"],"
        "\"google:verbatimrelevance\":1450,"
        "\"google:suggestrelevance\":[1440, 1430, 1420, 1410]}]",
      { "term", "a1", "a2", "a3", "a4", kNotApplicable } },
    { term,
      "[\"term\",[\"a1\", \"a2\", \"a3\", \"a4\", \"a5\", \"a6\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"QUERY\", \"QUERY\","
                                "\"QUERY\", \"QUERY\"],"
        "\"google:verbatimrelevance\":1450,"
        "\"google:suggestrelevance\":[1440, 1430, 1420, 1410, 1400, 1390]}]",
      { "term", "a1", "a2", "a3", "a4", "a5" } },
    { term,
      "[\"term\",[\"a1\", \"a2\", \"a3\", \"a4\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"QUERY\", \"QUERY\"],"
        "\"google:verbatimrelevance\":1450,"
        "\"google:suggestrelevance\":[1430, 1410, 1390, 1370]}]",
      { "term", "a1", "a2", "term2", "a3", "a4" } },
    // When the input looks like a URL, we disallow having a query as the
    // highest-ranking result.  If the query was provided by a suggestion, we
    // reset the suggest scores to enforce this (see
    // SearchProvider::UpdateMatches()).  Even if we reset the suggest scores,
    // however, we should still allow navsuggestions to be treated as
    // server-provided.
    { ASCIIToUTF16("a.com"),
      "[\"a.com\",[\"a1\", \"a2\", \"a.com/1\", \"a.com/2\"],[],[],"
       "{\"google:suggesttype\":[\"QUERY\", \"QUERY\", \"NAVIGATION\","
                                "\"NAVIGATION\"],"
        // A verbatim query for URL-like input scores 850, so the navigation
        // scores here should bracket it.
        "\"google:suggestrelevance\":[9999, 9998, 900, 800]}]",
      { "a.com/1", "a.com", "a.com/2", "a1", kNotApplicable, kNotApplicable } },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(cases[i].input, false, false);
    net::TestURLFetcher* fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kDefaultProviderURLFetcherID);
    ASSERT_TRUE(fetcher);
    fetcher->set_response_code(200);
    fetcher->SetResponseString(cases[i].json);
    fetcher->delegate()->OnURLFetchComplete(fetcher);
    RunTillProviderDone();

    const std::string description = "for input with json=" + cases[i].json;
    const ACMatches& matches = provider_->matches();

    // Ensure no extra matches are present.
    ASSERT_LE(matches.size(), 6U);

    size_t j = 0;
    // Ensure that the returned matches equal the expectations.
    for (; j < matches.size(); ++j)
      EXPECT_EQ(ASCIIToUTF16(cases[i].matches[j]),
                matches[j].contents) << description;
    // Ensure that no expected matches are missing.
    for (; j < ARRAYSIZE_UNSAFE(cases[i].matches); ++j)
      EXPECT_EQ(kNotApplicable, cases[i].matches[j]) <<
          "Case # " << i << " " << description;
  }
}

// Verifies suggest relevance behavior for URL input.
TEST_F(SearchProviderTest, DefaultProviderSuggestRelevanceScoringUrlInput) {
  struct DefaultFetcherUrlInputMatch {
    const std::string match_contents;
    AutocompleteMatch::Type match_type;
    bool allowed_to_be_default_match;
  };
  const DefaultFetcherUrlInputMatch kEmptyMatch =
      { kNotApplicable, AutocompleteMatchType::NUM_TYPES, false };
  struct {
    const std::string input;
    const std::string json;
    const DefaultFetcherUrlInputMatch output[4];
  } cases[] = {
    // Ensure topmost NAVIGATION matches are allowed for URL input.
    { "a.com", "[\"a.com\",[\"http://a.com/a\"],[],[],"
                "{\"google:suggesttype\":[\"NAVIGATION\"],"
                 "\"google:suggestrelevance\":[9999]}]",
      { { "a.com/a", AutocompleteMatchType::NAVSUGGEST,            true },
        { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        kEmptyMatch, kEmptyMatch } },

    // Ensure topmost SUGGEST matches are not allowed for URL input.
    // SearchProvider disregards search and verbatim suggested relevances.
    { "a.com", "[\"a.com\",[\"a.com info\"],[],[],"
                "{\"google:suggestrelevance\":[9999]}]",
      { { "a.com",      AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "a.com info", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch, kEmptyMatch } },
    { "a.com", "[\"a.com\",[\"a.com/a\"],[],[],"
                "{\"google:suggestrelevance\":[9999]}]",
      { { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "a.com/a", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch, kEmptyMatch } },

    // Ensure the fallback mechanism allows inlinable NAVIGATION matches.
    { "a.com", "[\"a.com\",[\"a.com/a\", \"http://a.com/b\"],[],[],"
                "{\"google:suggesttype\":[\"QUERY\", \"NAVIGATION\"],"
                 "\"google:suggestrelevance\":[9999, 9998]}]",
      { { "a.com/b", AutocompleteMatchType::NAVSUGGEST,            true },
        { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "a.com/a", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch } },
    { "a.com", "[\"a.com\",[\"a.com/a\", \"http://a.com/b\"],[],[],"
                "{\"google:suggesttype\":[\"QUERY\", \"NAVIGATION\"],"
                 "\"google:suggestrelevance\":[9998, 9997],"
                 "\"google:verbatimrelevance\":9999}]",
      { { "a.com/b", AutocompleteMatchType::NAVSUGGEST,            true },
        { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "a.com/a", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch } },

    // Ensure the fallback mechanism disallows non-inlinable NAVIGATION matches.
    { "a.com", "[\"a.com\",[\"a.com/a\", \"http://abc.com\"],[],[],"
                "{\"google:suggesttype\":[\"QUERY\", \"NAVIGATION\"],"
      "\"google:suggestrelevance\":[9999, 9998]}]",
      { { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "abc.com", AutocompleteMatchType::NAVSUGGEST,            false },
        { "a.com/a", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch } },
    { "a.com", "[\"a.com\",[\"a.com/a\", \"http://abc.com\"],[],[],"
                "{\"google:suggesttype\":[\"QUERY\", \"NAVIGATION\"],"
                 "\"google:suggestrelevance\":[9998, 9997],"
                 "\"google:verbatimrelevance\":9999}]",
      { { "a.com",   AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED, true },
        { "abc.com", AutocompleteMatchType::NAVSUGGEST,            false },
        { "a.com/a", AutocompleteMatchType::SEARCH_SUGGEST,        true },
        kEmptyMatch } },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(ASCIIToUTF16(cases[i].input), false, false);
    net::TestURLFetcher* fetcher =
        test_factory_.GetFetcherByID(
            SearchProvider::kDefaultProviderURLFetcherID);
    ASSERT_TRUE(fetcher);
    fetcher->set_response_code(200);
    fetcher->SetResponseString(cases[i].json);
    fetcher->delegate()->OnURLFetchComplete(fetcher);
    RunTillProviderDone();

    size_t j = 0;
    const ACMatches& matches = provider_->matches();
    // Ensure that the returned matches equal the expectations.
    for (; j < matches.size(); ++j) {
      EXPECT_EQ(ASCIIToUTF16(cases[i].output[j].match_contents),
                matches[j].contents);
      EXPECT_EQ(cases[i].output[j].match_type, matches[j].type);
      EXPECT_EQ(cases[i].output[j].allowed_to_be_default_match,
                matches[j].allowed_to_be_default_match);
    }
    // Ensure that no expected matches are missing.
    for (; j < ARRAYSIZE_UNSAFE(cases[i].output); ++j) {
      EXPECT_EQ(kNotApplicable, cases[i].output[j].match_contents);
      EXPECT_EQ(AutocompleteMatchType::NUM_TYPES,
                cases[i].output[j].match_type);
      EXPECT_FALSE(cases[i].output[j].allowed_to_be_default_match);
    }
  }
}

// A basic test that verifies the field trial triggered parsing logic.
TEST_F(SearchProviderTest, FieldTrialTriggeredParsing) {
  QueryForInput(ASCIIToUTF16("foo"), false, false);

  // Make sure the default providers suggest service was queried.
  net::TestURLFetcher* fetcher = test_factory_.GetFetcherByID(
      SearchProvider::kDefaultProviderURLFetcherID);
  ASSERT_TRUE(fetcher);

  // Tell the SearchProvider the suggest query is done.
  fetcher->set_response_code(200);
  fetcher->SetResponseString(
      "[\"foo\",[\"foo bar\"],[\"\"],[],"
      "{\"google:suggesttype\":[\"QUERY\"],"
      "\"google:fieldtrialtriggered\":true}]");
  fetcher->delegate()->OnURLFetchComplete(fetcher);
  fetcher = NULL;

  // Run till the history results complete.
  RunTillProviderDone();

  {
    // Check for the match and field trial triggered bits.
    AutocompleteMatch match;
    EXPECT_TRUE(FindMatchWithContents(ASCIIToUTF16("foo bar"), &match));
    ProvidersInfo providers_info;
    provider_->AddProviderInfo(&providers_info);
    ASSERT_EQ(1U, providers_info.size());
    EXPECT_EQ(1, providers_info[0].field_trial_triggered_size());
    EXPECT_EQ(1, providers_info[0].field_trial_triggered_in_session_size());
  }
  {
    // Reset the session and check that bits are reset.
    provider_->ResetSession();
    ProvidersInfo providers_info;
    provider_->AddProviderInfo(&providers_info);
    ASSERT_EQ(1U, providers_info.size());
    EXPECT_EQ(1, providers_info[0].field_trial_triggered_size());
    EXPECT_EQ(0, providers_info[0].field_trial_triggered_in_session_size());
  }
}

// Verifies inline autocompletion of navigational results.
TEST_F(SearchProviderTest, NavigationInline) {
  struct {
    const std::string input;
    const std::string url;
    // Test the expected fill_into_edit, which may drop "http://".
    // Some cases do not trim "http://" to match from the start of the scheme.
    const std::string fill_into_edit;
    const std::string inline_autocompletion;
    const bool allowed_to_be_default_match;
  } cases[] = {
    // Do not inline matches that do not contain the input; trim http as needed.
    { "x",                    "http://www.abc.com",
                                     "www.abc.com",  std::string(), false },
    { "https:",               "http://www.abc.com",
                                     "www.abc.com",  std::string(), false },
    { "abc.com/",             "http://www.abc.com",
                                     "www.abc.com",  std::string(), false },
    { "http://www.abc.com/a", "http://www.abc.com",
                              "http://www.abc.com",  std::string(), false },
    { "http://www.abc.com",   "https://www.abc.com",
                              "https://www.abc.com", std::string(), false },
    { "http://abc.com",       "ftp://abc.com",
                              "ftp://abc.com",       std::string(), false },
    { "https://www.abc.com",  "http://www.abc.com",
                                     "www.abc.com",  std::string(), false },
    { "ftp://abc.com",        "http://abc.com",
                                     "abc.com",      std::string(), false },

    // Do not inline matches with invalid input prefixes; trim http as needed.
    { "ttp",                  "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { "://w",                 "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { "ww.",                  "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { ".ab",                  "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { "bc",                   "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { ".com",                 "http://www.abc.com",
                                     "www.abc.com", std::string(), false },

    // Do not inline matches that omit input domain labels; trim http as needed.
    { "www.a",                "http://a.com",
                                     "a.com",       std::string(), false },
    { "http://www.a",         "http://a.com",
                              "http://a.com",       std::string(), false },
    { "www.a",                "ftp://a.com",
                              "ftp://a.com",        std::string(), false },
    { "ftp://www.a",          "ftp://a.com",
                              "ftp://a.com",        std::string(), false },

    // Input matching but with nothing to inline will not yield an offset.
    { "abc.com",              "http://www.abc.com",
                                     "www.abc.com", std::string(), false },
    { "http://www.abc.com",   "http://www.abc.com",
                              "http://www.abc.com", std::string(), false },

    // Inline matches when the input is a leading substring of the scheme.
    { "h",                    "http://www.abc.com",
                              "http://www.abc.com", "ttp://www.abc.com", true },
    { "http",                 "http://www.abc.com",
                              "http://www.abc.com", "://www.abc.com",    true },

    // Inline matches when the input is a leading substring of the full URL.
    { "http:",                "http://www.abc.com",
                              "http://www.abc.com", "//www.abc.com", true },
    { "http://w",             "http://www.abc.com",
                              "http://www.abc.com", "ww.abc.com",    true },
    { "http://www.",          "http://www.abc.com",
                              "http://www.abc.com", "abc.com",       true },
    { "http://www.ab",        "http://www.abc.com",
                              "http://www.abc.com", "c.com",         true },
    { "http://www.abc.com/p", "http://www.abc.com/path/file.htm?q=x#foo",
                              "http://www.abc.com/path/file.htm?q=x#foo",
                                                  "ath/file.htm?q=x#foo",
                              true },
    { "http://abc.com/p",     "http://abc.com/path/file.htm?q=x#foo",
                              "http://abc.com/path/file.htm?q=x#foo",
                                              "ath/file.htm?q=x#foo", true},

    // Inline matches with valid URLPrefixes; only trim "http://".
    { "w",               "http://www.abc.com",
                                "www.abc.com", "ww.abc.com", true },
    { "www.a",           "http://www.abc.com",
                                "www.abc.com", "bc.com",     true },
    { "abc",             "http://www.abc.com",
                                "www.abc.com", ".com",       true },
    { "abc.c",           "http://www.abc.com",
                                "www.abc.com", "om",         true },
    { "abc.com/p",       "http://www.abc.com/path/file.htm?q=x#foo",
                                "www.abc.com/path/file.htm?q=x#foo",
                                             "ath/file.htm?q=x#foo", true },
    { "abc.com/p",       "http://abc.com/path/file.htm?q=x#foo",
                                "abc.com/path/file.htm?q=x#foo",
                                         "ath/file.htm?q=x#foo", true },

    // Inline matches using the maximal URLPrefix components.
    { "h",               "http://help.com",
                                "help.com", "elp.com",     true },
    { "http",            "http://http.com",
                                "http.com", ".com",        true },
    { "h",               "http://www.help.com",
                                "www.help.com", "elp.com", true },
    { "http",            "http://www.http.com",
                                "www.http.com", ".com",    true },
    { "w",               "http://www.www.com",
                                "www.www.com",  "ww.com",  true },

    // Test similar behavior for the ftp and https schemes.
    { "ftp://www.ab",    "ftp://www.abc.com/path/file.htm?q=x#foo",
                         "ftp://www.abc.com/path/file.htm?q=x#foo",
                                     "c.com/path/file.htm?q=x#foo", true },
    { "www.ab",          "ftp://www.abc.com/path/file.htm?q=x#foo",
                         "ftp://www.abc.com/path/file.htm?q=x#foo",
                                     "c.com/path/file.htm?q=x#foo", true },
    { "ab",              "ftp://www.abc.com/path/file.htm?q=x#foo",
                         "ftp://www.abc.com/path/file.htm?q=x#foo",
                                     "c.com/path/file.htm?q=x#foo", true },
    { "ab",              "ftp://abc.com/path/file.htm?q=x#foo",
                         "ftp://abc.com/path/file.htm?q=x#foo",
                                 "c.com/path/file.htm?q=x#foo",     true },
    { "https://www.ab",  "https://www.abc.com/path/file.htm?q=x#foo",
                         "https://www.abc.com/path/file.htm?q=x#foo",
                                       "c.com/path/file.htm?q=x#foo", true },
    { "www.ab",          "https://www.abc.com/path/file.htm?q=x#foo",
                         "https://www.abc.com/path/file.htm?q=x#foo",
                                       "c.com/path/file.htm?q=x#foo", true },
    { "ab",              "https://www.abc.com/path/file.htm?q=x#foo",
                         "https://www.abc.com/path/file.htm?q=x#foo",
                                       "c.com/path/file.htm?q=x#foo", true },
    { "ab",              "https://abc.com/path/file.htm?q=x#foo",
                         "https://abc.com/path/file.htm?q=x#foo",
                                   "c.com/path/file.htm?q=x#foo", true },

    // Forced query input should inline and retain the "?" prefix.
    { "?http://www.ab",  "http://www.abc.com",
                        "?http://www.abc.com", "c.com", true },
    { "?www.ab",         "http://www.abc.com",
                               "?www.abc.com", "c.com", true },
    { "?ab",             "http://www.abc.com",
                               "?www.abc.com", "c.com", true },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    QueryForInput(ASCIIToUTF16(cases[i].input), false, false);
    AutocompleteMatch match(
        provider_->NavigationToMatch(SearchProvider::NavigationResult(
            *provider_.get(), GURL(cases[i].url), string16(), false, 0,
            false)));
    EXPECT_EQ(ASCIIToUTF16(cases[i].inline_autocompletion),
              match.inline_autocompletion);
    EXPECT_EQ(ASCIIToUTF16(cases[i].fill_into_edit), match.fill_into_edit);
    EXPECT_EQ(cases[i].allowed_to_be_default_match,
              match.allowed_to_be_default_match);
  }
}

// Verifies that "http://" is not trimmed for input that is a leading substring.
TEST_F(SearchProviderTest, NavigationInlineSchemeSubstring) {
  const string16 input(ASCIIToUTF16("ht"));
  const string16 url(ASCIIToUTF16("http://a.com"));
  const SearchProvider::NavigationResult result(
      *provider_.get(), GURL(url), string16(), false, 0, false);

  // Check the offset and strings when inline autocompletion is allowed.
  QueryForInput(input, false, false);
  AutocompleteMatch match_inline(provider_->NavigationToMatch(result));
  EXPECT_EQ(url, match_inline.fill_into_edit);
  EXPECT_EQ(url.substr(2), match_inline.inline_autocompletion);
  EXPECT_TRUE(match_inline.allowed_to_be_default_match);
  EXPECT_EQ(url, match_inline.contents);

  // Check the same offset and strings when inline autocompletion is prevented.
  QueryForInput(input, true, false);
  AutocompleteMatch match_prevent(provider_->NavigationToMatch(result));
  EXPECT_EQ(url, match_prevent.fill_into_edit);
  EXPECT_TRUE(match_prevent.inline_autocompletion.empty());
  EXPECT_FALSE(match_prevent.allowed_to_be_default_match);
  EXPECT_EQ(url, match_prevent.contents);
}

// Verifies that input "w" marks a more significant domain label than "www.".
TEST_F(SearchProviderTest, NavigationInlineDomainClassify) {
  QueryForInput(ASCIIToUTF16("w"), false, false);
  AutocompleteMatch match(
      provider_->NavigationToMatch(SearchProvider::NavigationResult(
          *provider_.get(), GURL("http://www.wow.com"), string16(), false, 0,
          false)));
  EXPECT_EQ(ASCIIToUTF16("ow.com"), match.inline_autocompletion);
  EXPECT_TRUE(match.allowed_to_be_default_match);
  EXPECT_EQ(ASCIIToUTF16("www.wow.com"), match.fill_into_edit);
  EXPECT_EQ(ASCIIToUTF16("www.wow.com"), match.contents);

  // Ensure that the match for input "w" is marked on "wow" and not "www".
  ASSERT_EQ(3U, match.contents_class.size());
  EXPECT_EQ(0U, match.contents_class[0].offset);
  EXPECT_EQ(AutocompleteMatch::ACMatchClassification::URL,
            match.contents_class[0].style);
  EXPECT_EQ(4U, match.contents_class[1].offset);
  EXPECT_EQ(AutocompleteMatch::ACMatchClassification::URL |
            AutocompleteMatch::ACMatchClassification::MATCH,
            match.contents_class[1].style);
  EXPECT_EQ(5U, match.contents_class[2].offset);
  EXPECT_EQ(AutocompleteMatch::ACMatchClassification::URL,
            match.contents_class[2].style);
}

TEST_F(SearchProviderTest, RemoveStaleResultsTest) {
  // TODO(mpearson): Consider expanding this test to explicitly cover
  // testing staleness for keyword results.
  struct {
    const std::string omnibox_input;
    const int verbatim_relevance;
    // These cached suggestions should already be sorted.
    // The particular number 5 as the length of the array is
    // unimportant; it's merely enough cached results to fully test
    // the functioning of RemoveAllStaleResults().
    struct {
      const std::string suggestion;
      const bool is_navigation_result;
      const int relevance;
      // |expect_match| is true if this result should survive
      // RemoveAllStaleResults() filtering against |omnibox_input| below.
      const bool expect_match;
    } results[5];
  } cases[] = {
    // Simple case: multiple query suggestions and no navsuggestions.
    // All query suggestions score less than search-what-you-typed and
    // thus none should be filtered because none will appear first.
    { "x", 1300,
      { { "food",         false, 1299, true  },
        { "foobar",       false, 1298, true  },
        { "crazy",        false, 1297, true  },
        { "friend",       false, 1296, true  },
        { kNotApplicable, false, 0,    false } } },

    // Similarly simple cases, but the query suggestion appears first.
    { "f", 1200,
      { { "food",         false, 1299, true  },
        { "foobar",       false, 1298, true  },
        { "crazy",        false, 1297, true  },
        { "friend",       false, 1296, true  },
        { kNotApplicable, false, 0,    false } } },
    { "c", 1200,
      { { "food",         false, 1299, false },
        { "foobar",       false, 1298, false },
        { "crazy",        false, 1297, true  },
        { "friend",       false, 1296, true  },
        { kNotApplicable, false, 0,    false } } },
    { "x", 1200,
      { { "food",         false, 1299, false },
        { "foobar",       false, 1298, false },
        { "crazy",        false, 1297, false },
        { "friend",       false, 1296, false },
        { kNotApplicable, false, 0,    false } } },

    // The same sort of cases, just using a mix of queries and navsuggestions.
    { "x", 1300,
      { { "http://food.com/",   true,  1299, true },
        { "foobar",             false, 1298, true },
        { "http://crazy.com/",  true,  1297, true },
        { "friend",             false, 1296, true },
        { "http://friend.com/", true,  1295, true } } },
    { "f", 1200,
      { { "http://food.com/",   true,  1299, true },
        { "foobar",             false, 1298, true },
        { "http://crazy.com/",  true,  1297, true },
        { "friend",             false, 1296, true },
        { "http://friend.com/", true,  1295, true } } },
    { "c", 1200,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1298, false },
        { "http://crazy.com/",  true,  1297, true  },
        { "friend",             false, 1296, true  },
        { "http://friend.com/", true,  1295, true  } } },
    { "x", 1200,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1298, false },
        { "http://crazy.com/",  true,  1297, false },
        { "friend",             false, 1296, false },
        { "http://friend.com/", true,  1295, false } } },

    // Run the three tests immediately above again, just with verbatim
    // suppressed.  Note that in the last case, all results are filtered.
    // Because verbatim is also suppressed, SearchProvider will realize
    // in UpdateMatches() that it needs to restore verbatim to fulfill
    // its constraints.  This restoration does not happen in
    // RemoveAllStaleResults() and hence is not tested here.  This restoration
    // is tested in the DefaultFetcherSuggestRelevance test.
    { "f", 0,
      { { "http://food.com/",   true,  1299, true },
        { "foobar",             false, 1298, true },
        { "http://crazy.com/",  true,  1297, true },
        { "friend",             false, 1296, true },
        { "http://friend.com/", true,  1295, true } } },
    { "c", 0,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1298, false },
        { "http://crazy.com/",  true,  1297, true  },
        { "friend",             false, 1296, true  },
        { "http://friend.com/", true,  1295, true  } } },
    { "x", 0,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1298, false },
        { "http://crazy.com/",  true,  1297, false },
        { "friend",             false, 1296, false },
        { "http://friend.com/", true,  1295, false } } },

    // The same sort of tests again, just with verbatim with a score
    // that would place it in between other suggestions.
    { "f", 1290,
      { { "http://food.com/",   true,  1299, true },
        { "foobar",             false, 1288, true },
        { "http://crazy.com/",  true,  1277, true },
        { "friend",             false, 1266, true },
        { "http://friend.com/", true,  1255, true } } },
    { "c", 1290,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1288, true  },
        { "http://crazy.com/",  true,  1277, true  },
        { "friend",             false, 1266, true  },
        { "http://friend.com/", true,  1255, true  } } },
    { "c", 1270,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1288, false },
        { "http://crazy.com/",  true,  1277, true  },
        { "friend",             false, 1266, true  },
        { "http://friend.com/", true,  1255, true  } } },
    { "x", 1280,
      { { "http://food.com/",   true,  1299, false },
        { "foobar",             false, 1288, false },
        { "http://crazy.com/",  true,  1277, true  },
        { "friend",             false, 1266, true  },
        { "http://friend.com/", true,  1255, true  } } },
  };

  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
    // Initialize cached results for this test case.
    provider_->default_results_.verbatim_relevance =
        cases[i].verbatim_relevance;
    provider_->default_results_.navigation_results.clear();
    provider_->default_results_.suggest_results.clear();
    for (size_t j = 0; j < ARRAYSIZE_UNSAFE(cases[i].results); ++j) {
      const std::string& suggestion = cases[i].results[j].suggestion;
      if (suggestion == kNotApplicable)
        break;
      if (cases[i].results[j].is_navigation_result) {
        provider_->default_results_.navigation_results.push_back(
            SearchProvider::NavigationResult(
                *provider_.get(), GURL(suggestion), string16(), false,
                cases[i].results[j].relevance, false));
      } else {
        provider_->default_results_.suggest_results.push_back(
            SearchProvider::SuggestResult(ASCIIToUTF16(suggestion), false,
                                          cases[i].results[j].relevance,
                                          false));
      }
    }

    provider_->input_ = AutocompleteInput(
        ASCIIToUTF16(cases[i].omnibox_input), string16::npos, string16(),
        GURL(), AutocompleteInput::INVALID_SPEC, false, false, true,
        AutocompleteInput::ALL_MATCHES);
    provider_->RemoveAllStaleResults();

    // Check cached results.
    SearchProvider::SuggestResults::const_iterator sug_it =
        provider_->default_results_.suggest_results.begin();
    const SearchProvider::SuggestResults::const_iterator sug_end =
        provider_->default_results_.suggest_results.end();
    SearchProvider::NavigationResults::const_iterator nav_it =
        provider_->default_results_.navigation_results.begin();
    const SearchProvider::NavigationResults::const_iterator nav_end =
        provider_->default_results_.navigation_results.end();
    for (size_t j = 0; j < ARRAYSIZE_UNSAFE(cases[i].results); ++j) {
      const std::string& suggestion = cases[i].results[j].suggestion;
      if (suggestion == kNotApplicable)
        continue;
      if (!cases[i].results[j].expect_match)
        continue;
      if (cases[i].results[j].is_navigation_result) {
        ASSERT_NE(nav_end, nav_it) << "Failed to find " << suggestion;
        EXPECT_EQ(suggestion, nav_it->url().spec());
        ++nav_it;
      } else {
        ASSERT_NE(sug_end, sug_it) << "Failed to find " << suggestion;
        EXPECT_EQ(ASCIIToUTF16(suggestion), sug_it->suggestion());
        ++sug_it;
      }
    }
    EXPECT_EQ(sug_end, sug_it);
    EXPECT_EQ(nav_end, nav_it);
  }
}