// Copyright 2013 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.
//
// This file contains tests for extension loading, reloading, and
// unloading behavior.

#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/version.h"
#include "chrome/browser/extensions/extension_browsertest.h"
#include "chrome/browser/extensions/test_extension_dir.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "extensions/browser/extension_registry.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "testing/gmock/include/gmock/gmock.h"

namespace extensions {
namespace {

class ExtensionLoadingTest : public ExtensionBrowserTest {
};

// Check the fix for http://crbug.com/178542.
IN_PROC_BROWSER_TEST_F(ExtensionLoadingTest,
                       UpgradeAfterNavigatingFromOverriddenNewTabPage) {
  embedded_test_server()->ServeFilesFromDirectory(
      base::FilePath(FILE_PATH_LITERAL("chrome/test/data")));
  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());

  TestExtensionDir extension_dir;
  const char manifest_template[] =
      "{"
      "  \"name\": \"Overrides New Tab\","
      "  \"version\": \"%d\","
      "  \"description\": \"Overrides New Tab\","
      "  \"manifest_version\": 2,"
      "  \"background\": {"
      "    \"persistent\": false,"
      "    \"scripts\": [\"event.js\"]"
      "  },"
      "  \"chrome_url_overrides\": {"
      "    \"newtab\": \"newtab.html\""
      "  }"
      "}";
  extension_dir.WriteManifest(base::StringPrintf(manifest_template, 1));
  extension_dir.WriteFile(FILE_PATH_LITERAL("event.js"), "");
  extension_dir.WriteFile(FILE_PATH_LITERAL("newtab.html"),
                          "<h1>Overridden New Tab Page</h1>");

  const Extension* new_tab_extension =
      InstallExtension(extension_dir.Pack(), 1 /*new install*/);
  ASSERT_TRUE(new_tab_extension);

  // Visit the New Tab Page to get a renderer using the extension into history.
  ui_test_utils::NavigateToURL(browser(), GURL("chrome://newtab"));

  // Navigate that tab to a non-extension URL to swap out the extension's
  // renderer.
  const GURL test_link_from_NTP =
      embedded_test_server()->GetURL("/README.chromium");
  EXPECT_THAT(test_link_from_NTP.spec(), testing::EndsWith("/README.chromium"))
      << "Check that the test server started.";
  NavigateInRenderer(browser()->tab_strip_model()->GetActiveWebContents(),
                     test_link_from_NTP);

  // Increase the extension's version.
  extension_dir.WriteManifest(base::StringPrintf(manifest_template, 2));

  // Upgrade the extension.
  new_tab_extension = UpdateExtension(
      new_tab_extension->id(), extension_dir.Pack(), 0 /*expected upgrade*/);
  EXPECT_THAT(new_tab_extension->version()->components(),
              testing::ElementsAre(2));

  // The extension takes a couple round-trips to the renderer in order
  // to crash, so open a new tab to wait long enough.
  AddTabAtIndex(browser()->tab_strip_model()->count(),
                GURL("http://www.google.com/"),
                ui::PAGE_TRANSITION_TYPED);

  // Check that the extension hasn't crashed.
  ExtensionRegistry* registry = ExtensionRegistry::Get(profile());
  EXPECT_EQ(0U, registry->terminated_extensions().size());
  EXPECT_TRUE(registry->enabled_extensions().Contains(new_tab_extension->id()));
}

}  // namespace
}  // namespace extensions