apps/app_window_geometry_cache_unittest.cc - platform/external/chromium_org - Git at Google

 // Copyright 2014 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 "apps/app_window_geometry_cache.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/mock_pref_change_callback.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/test_extension_prefs.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/common/extension_builder.h"
 #include "extensions/common/value_builder.h"
 #include "testing/gtest/include/gtest/gtest.h"

 using content::BrowserThread;

 namespace apps {

 namespace {
 const char kWindowId[] = "windowid";
 const char kWindowId2[] = "windowid2";

 // Create a very simple extension with id.
 scoped_refptr<extensions::Extension> CreateExtension(const std::string& id) {
   return extensions::ExtensionBuilder()
       .SetManifest(extensions::DictionaryBuilder().Set("name", "test").Set(
           "version", "0.1"))
       .SetID(id)
       .Build();
 }

 }  // namespace

 // Base class for tests.
 class AppWindowGeometryCacheTest : public testing::Test {
  public:
   AppWindowGeometryCacheTest()
       : profile_(new TestingProfile),
         ui_thread_(BrowserThread::UI, &ui_message_loop_) {
     prefs_.reset(new extensions::TestExtensionPrefs(
         ui_message_loop_.message_loop_proxy().get()));
     cache_.reset(new AppWindowGeometryCache(profile_.get(), prefs_->prefs()));
     cache_->SetSyncDelayForTests(0);
   }

   void AddGeometryAndLoadExtension(const std::string& extension_id,
                                    const std::string& window_id,
                                    const gfx::Rect& bounds,
                                    const gfx::Rect& screen_bounds,
                                    ui::WindowShowState state);

   // Spins the UI threads' message loops to make sure any task
   // posted to sync the geometry to the value store gets a chance to run.
   void WaitForSync();

   void LoadExtension(const std::string& extension_id);
   void UnloadExtension(const std::string& extension_id);

  protected:
   scoped_ptr<TestingProfile> profile_;
   base::MessageLoopForUI ui_message_loop_;
   content::TestBrowserThread ui_thread_;
   scoped_ptr<extensions::TestExtensionPrefs> prefs_;
   scoped_ptr<AppWindowGeometryCache> cache_;
 };

 void AppWindowGeometryCacheTest::AddGeometryAndLoadExtension(
     const std::string& extension_id,
     const std::string& window_id,
     const gfx::Rect& bounds,
     const gfx::Rect& screen_bounds,
     ui::WindowShowState state) {
   scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
   base::DictionaryValue* value = new base::DictionaryValue;
   value->SetInteger("x", bounds.x());
   value->SetInteger("y", bounds.y());
   value->SetInteger("w", bounds.width());
   value->SetInteger("h", bounds.height());
   value->SetInteger("screen_bounds_x", screen_bounds.x());
   value->SetInteger("screen_bounds_y", screen_bounds.y());
   value->SetInteger("screen_bounds_w", screen_bounds.width());
   value->SetInteger("screen_bounds_h", screen_bounds.height());
   value->SetInteger("state", state);
   dict->SetWithoutPathExpansion(window_id, value);
   prefs_->prefs()->SetGeometryCache(extension_id, dict.Pass());
   LoadExtension(extension_id);
 }

 void AppWindowGeometryCacheTest::WaitForSync() {
   content::RunAllPendingInMessageLoop();
 }

 void AppWindowGeometryCacheTest::LoadExtension(
     const std::string& extension_id) {
   cache_->LoadGeometryFromStorage(extension_id);
   WaitForSync();
 }

 void AppWindowGeometryCacheTest::UnloadExtension(
     const std::string& extension_id) {
   scoped_refptr<extensions::Extension> extension =
       CreateExtension(extension_id);
   cache_->OnExtensionUnloaded(
       profile_.get(),
       extension.get(),
       extensions::UnloadedExtensionInfo::REASON_DISABLE);
   WaitForSync();
 }

 // Test getting geometry from an empty store.
 TEST_F(AppWindowGeometryCacheTest, GetGeometryEmptyStore) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   ASSERT_FALSE(cache_->GetGeometry(extension_id, kWindowId, NULL, NULL, NULL));
 }

 // Test getting geometry for an unknown extension.
 TEST_F(AppWindowGeometryCacheTest, GetGeometryUnkownExtension) {
   const std::string extension_id1 = prefs_->AddExtensionAndReturnId("ext1");
   const std::string extension_id2 = prefs_->AddExtensionAndReturnId("ext2");
   AddGeometryAndLoadExtension(extension_id1,
                               kWindowId,
                               gfx::Rect(4, 5, 31, 43),
                               gfx::Rect(0, 0, 1600, 900),
                               ui::SHOW_STATE_NORMAL);
   ASSERT_FALSE(cache_->GetGeometry(extension_id2, kWindowId, NULL, NULL, NULL));
 }

 // Test getting geometry for an unknown window in a known extension.
 TEST_F(AppWindowGeometryCacheTest, GetGeometryUnkownWindow) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   AddGeometryAndLoadExtension(extension_id,
                               kWindowId,
                               gfx::Rect(4, 5, 31, 43),
                               gfx::Rect(0, 0, 1600, 900),
                               ui::SHOW_STATE_NORMAL);
   ASSERT_FALSE(cache_->GetGeometry(extension_id, kWindowId2, NULL, NULL, NULL));
 }

 // Test that loading geometry, screen_bounds and state from the store works
 // correctly.
 TEST_F(AppWindowGeometryCacheTest, GetGeometryAndStateFromStore) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   gfx::Rect bounds(4, 5, 31, 43);
   gfx::Rect screen_bounds(0, 0, 1600, 900);
   ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
   AddGeometryAndLoadExtension(
       extension_id, kWindowId, bounds, screen_bounds, state);
   gfx::Rect new_bounds;
   gfx::Rect new_screen_bounds;
   ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
   ASSERT_TRUE(cache_->GetGeometry(
       extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_EQ(bounds, new_bounds);
   ASSERT_EQ(screen_bounds, new_screen_bounds);
   ASSERT_EQ(state, new_state);
 }

 // Test corrupt bounds will not be loaded.
 TEST_F(AppWindowGeometryCacheTest, CorruptBounds) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   gfx::Rect bounds;
   gfx::Rect screen_bounds(0, 0, 1600, 900);
   ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
   AddGeometryAndLoadExtension(
       extension_id, kWindowId, bounds, screen_bounds, state);
   gfx::Rect new_bounds;
   gfx::Rect new_screen_bounds;
   ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
   ASSERT_FALSE(cache_->GetGeometry(
       extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_TRUE(new_bounds.IsEmpty());
   ASSERT_TRUE(new_screen_bounds.IsEmpty());
   ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
 }

 // Test corrupt screen bounds will not be loaded.
 TEST_F(AppWindowGeometryCacheTest, CorruptScreenBounds) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   gfx::Rect bounds(4, 5, 31, 43);
   gfx::Rect screen_bounds;
   ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
   AddGeometryAndLoadExtension(
       extension_id, kWindowId, bounds, screen_bounds, state);
   gfx::Rect new_bounds;
   gfx::Rect new_screen_bounds;
   ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
   ASSERT_FALSE(cache_->GetGeometry(
       extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_TRUE(new_bounds.IsEmpty());
   ASSERT_TRUE(new_screen_bounds.IsEmpty());
   ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
 }

 // Test corrupt state will not be loaded.
 TEST_F(AppWindowGeometryCacheTest, CorruptState) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   gfx::Rect bounds(4, 5, 31, 43);
   gfx::Rect screen_bounds(0, 0, 1600, 900);
   ui::WindowShowState state = ui::SHOW_STATE_DEFAULT;
   AddGeometryAndLoadExtension(
       extension_id, kWindowId, bounds, screen_bounds, state);
   gfx::Rect new_bounds;
   gfx::Rect new_screen_bounds;
   ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
   ASSERT_FALSE(cache_->GetGeometry(
       extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_TRUE(new_bounds.IsEmpty());
   ASSERT_TRUE(new_screen_bounds.IsEmpty());
   ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
 }

 // Test saving geometry, screen_bounds and state to the cache and state store,
 // and reading it back.
 TEST_F(AppWindowGeometryCacheTest, SaveGeometryAndStateToStore) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   const std::string window_id(kWindowId);

   // inform cache of extension
   LoadExtension(extension_id);

   // update geometry stored in cache
   gfx::Rect bounds(4, 5, 31, 43);
   gfx::Rect screen_bounds(0, 0, 1600, 900);
   ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
   cache_->SaveGeometry(extension_id, window_id, bounds, screen_bounds, state);

   // make sure that immediately reading back geometry works
   gfx::Rect new_bounds;
   gfx::Rect new_screen_bounds;
   ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
   ASSERT_TRUE(cache_->GetGeometry(
       extension_id, window_id, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_EQ(bounds, new_bounds);
   ASSERT_EQ(screen_bounds, new_screen_bounds);
   ASSERT_EQ(state, new_state);

   // unload extension to force cache to save data to the state store
   UnloadExtension(extension_id);

   // check if geometry got stored correctly in the state store
   const base::DictionaryValue* dict =
       prefs_->prefs()->GetGeometryCache(extension_id);
   ASSERT_TRUE(dict);

   ASSERT_TRUE(dict->HasKey(window_id));
   int v;
   ASSERT_TRUE(dict->GetInteger(window_id + ".x", &v));
   ASSERT_EQ(bounds.x(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".y", &v));
   ASSERT_EQ(bounds.y(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".w", &v));
   ASSERT_EQ(bounds.width(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".h", &v));
   ASSERT_EQ(bounds.height(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_x", &v));
   ASSERT_EQ(screen_bounds.x(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_y", &v));
   ASSERT_EQ(screen_bounds.y(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_w", &v));
   ASSERT_EQ(screen_bounds.width(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_h", &v));
   ASSERT_EQ(screen_bounds.height(), v);
   ASSERT_TRUE(dict->GetInteger(window_id + ".state", &v));
   ASSERT_EQ(state, v);

   // reload extension
   LoadExtension(extension_id);
   // and make sure the geometry got reloaded properly too
   ASSERT_TRUE(cache_->GetGeometry(
       extension_id, window_id, &new_bounds, &new_screen_bounds, &new_state));
   ASSERT_EQ(bounds, new_bounds);
   ASSERT_EQ(screen_bounds, new_screen_bounds);
   ASSERT_EQ(state, new_state);
 }

 // Tests that we won't do writes to the state store for SaveGeometry calls
 // which don't change the state we already have.
 TEST_F(AppWindowGeometryCacheTest, NoDuplicateWrites) {
   using testing::_;
   using testing::Mock;

   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   gfx::Rect bounds1(100, 200, 300, 400);
   gfx::Rect bounds2(200, 400, 600, 800);
   gfx::Rect bounds2_duplicate(200, 400, 600, 800);

   gfx::Rect screen_bounds1(0, 0, 1600, 900);
   gfx::Rect screen_bounds2(0, 0, 1366, 768);
   gfx::Rect screen_bounds2_duplicate(0, 0, 1366, 768);

   MockPrefChangeCallback observer(prefs_->pref_service());
   PrefChangeRegistrar registrar;
   registrar.Init(prefs_->pref_service());
   registrar.Add("extensions.settings", observer.GetCallback());

   // Write the first bounds - it should do > 0 writes.
   EXPECT_CALL(observer, OnPreferenceChanged(_));
   cache_->SaveGeometry(
       extension_id, kWindowId, bounds1, screen_bounds1, ui::SHOW_STATE_NORMAL);
   WaitForSync();
   Mock::VerifyAndClearExpectations(&observer);

   // Write a different bounds - it should also do > 0 writes.
   EXPECT_CALL(observer, OnPreferenceChanged(_));
   cache_->SaveGeometry(
       extension_id, kWindowId, bounds2, screen_bounds1, ui::SHOW_STATE_NORMAL);
   WaitForSync();
   Mock::VerifyAndClearExpectations(&observer);

   // Write a different screen bounds - it should also do > 0 writes.
   EXPECT_CALL(observer, OnPreferenceChanged(_));
   cache_->SaveGeometry(
       extension_id, kWindowId, bounds2, screen_bounds2, ui::SHOW_STATE_NORMAL);
   WaitForSync();
   Mock::VerifyAndClearExpectations(&observer);

   // Write a different state - it should also do > 0 writes.
   EXPECT_CALL(observer, OnPreferenceChanged(_));
   cache_->SaveGeometry(extension_id,
                        kWindowId,
                        bounds2,
                        screen_bounds2,
                        ui::SHOW_STATE_MAXIMIZED);
   WaitForSync();
   Mock::VerifyAndClearExpectations(&observer);

   // Write a bounds, screen bounds and state that's a duplicate of what we
   // already have. This should not do any writes.
   EXPECT_CALL(observer, OnPreferenceChanged(_)).Times(0);
   cache_->SaveGeometry(extension_id,
                        kWindowId,
                        bounds2_duplicate,
                        screen_bounds2_duplicate,
                        ui::SHOW_STATE_MAXIMIZED);
   WaitForSync();
   Mock::VerifyAndClearExpectations(&observer);
 }

 // Tests that no more than kMaxCachedWindows windows will be cached.
 TEST_F(AppWindowGeometryCacheTest, MaxWindows) {
   const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
   // inform cache of extension
   LoadExtension(extension_id);

   gfx::Rect bounds(4, 5, 31, 43);
   gfx::Rect screen_bounds(0, 0, 1600, 900);
   for (size_t i = 0; i < AppWindowGeometryCache::kMaxCachedWindows + 1; ++i) {
     std::string window_id = "window_" + base::IntToString(i);
     cache_->SaveGeometry(
         extension_id, window_id, bounds, screen_bounds, ui::SHOW_STATE_NORMAL);
   }

   // The first added window should no longer have cached geometry.
   EXPECT_FALSE(cache_->GetGeometry(extension_id, "window_0", NULL, NULL, NULL));
   // All other windows should still exist.
   for (size_t i = 1; i < AppWindowGeometryCache::kMaxCachedWindows + 1; ++i) {
     std::string window_id = "window_" + base::IntToString(i);
     EXPECT_TRUE(cache_->GetGeometry(extension_id, window_id, NULL, NULL, NULL));
   }
 }

 }  // namespace apps
	// Copyright 2014 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 "apps/app_window_geometry_cache.h"
	#include "base/memory/scoped_ptr.h"
	#include "base/prefs/mock_pref_change_callback.h"
	#include "base/strings/string_number_conversions.h"
	#include "chrome/browser/extensions/test_extension_prefs.h"
	#include "chrome/test/base/testing_profile.h"
	#include "content/public/test/test_browser_thread.h"
	#include "content/public/test/test_utils.h"
	#include "extensions/browser/extension_prefs.h"
	#include "extensions/common/extension_builder.h"
	#include "extensions/common/value_builder.h"
	#include "testing/gtest/include/gtest/gtest.h"

	using content::BrowserThread;

	namespace apps {

	namespace {
	const char kWindowId[] = "windowid";
	const char kWindowId2[] = "windowid2";

	// Create a very simple extension with id.
	scoped_refptr<extensions::Extension> CreateExtension(const std::string& id) {
	return extensions::ExtensionBuilder()
	.SetManifest(extensions::DictionaryBuilder().Set("name", "test").Set(
	"version", "0.1"))
	.SetID(id)
	.Build();
	}

	} // namespace

	// Base class for tests.
	class AppWindowGeometryCacheTest : public testing::Test {
	public:
	AppWindowGeometryCacheTest()
	: profile_(new TestingProfile),
	ui_thread_(BrowserThread::UI, &ui_message_loop_) {
	prefs_.reset(new extensions::TestExtensionPrefs(
	ui_message_loop_.message_loop_proxy().get()));
	cache_.reset(new AppWindowGeometryCache(profile_.get(), prefs_->prefs()));
	cache_->SetSyncDelayForTests(0);
	}

	void AddGeometryAndLoadExtension(const std::string& extension_id,
	const std::string& window_id,
	const gfx::Rect& bounds,
	const gfx::Rect& screen_bounds,
	ui::WindowShowState state);

	// Spins the UI threads' message loops to make sure any task
	// posted to sync the geometry to the value store gets a chance to run.
	void WaitForSync();

	void LoadExtension(const std::string& extension_id);
	void UnloadExtension(const std::string& extension_id);

	protected:
	scoped_ptr<TestingProfile> profile_;
	base::MessageLoopForUI ui_message_loop_;
	content::TestBrowserThread ui_thread_;
	scoped_ptr<extensions::TestExtensionPrefs> prefs_;
	scoped_ptr<AppWindowGeometryCache> cache_;
	};

	void AppWindowGeometryCacheTest::AddGeometryAndLoadExtension(
	const std::string& extension_id,
	const std::string& window_id,
	const gfx::Rect& bounds,
	const gfx::Rect& screen_bounds,
	ui::WindowShowState state) {
	scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
	base::DictionaryValue* value = new base::DictionaryValue;
	value->SetInteger("x", bounds.x());
	value->SetInteger("y", bounds.y());
	value->SetInteger("w", bounds.width());
	value->SetInteger("h", bounds.height());
	value->SetInteger("screen_bounds_x", screen_bounds.x());
	value->SetInteger("screen_bounds_y", screen_bounds.y());
	value->SetInteger("screen_bounds_w", screen_bounds.width());
	value->SetInteger("screen_bounds_h", screen_bounds.height());
	value->SetInteger("state", state);
	dict->SetWithoutPathExpansion(window_id, value);
	prefs_->prefs()->SetGeometryCache(extension_id, dict.Pass());
	LoadExtension(extension_id);
	}

	void AppWindowGeometryCacheTest::WaitForSync() {
	content::RunAllPendingInMessageLoop();
	}

	void AppWindowGeometryCacheTest::LoadExtension(
	const std::string& extension_id) {
	cache_->LoadGeometryFromStorage(extension_id);
	WaitForSync();
	}

	void AppWindowGeometryCacheTest::UnloadExtension(
	const std::string& extension_id) {
	scoped_refptr<extensions::Extension> extension =
	CreateExtension(extension_id);
	cache_->OnExtensionUnloaded(
	profile_.get(),
	extension.get(),
	extensions::UnloadedExtensionInfo::REASON_DISABLE);
	WaitForSync();
	}

	// Test getting geometry from an empty store.
	TEST_F(AppWindowGeometryCacheTest, GetGeometryEmptyStore) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	ASSERT_FALSE(cache_->GetGeometry(extension_id, kWindowId, NULL, NULL, NULL));
	}

	// Test getting geometry for an unknown extension.
	TEST_F(AppWindowGeometryCacheTest, GetGeometryUnkownExtension) {
	const std::string extension_id1 = prefs_->AddExtensionAndReturnId("ext1");
	const std::string extension_id2 = prefs_->AddExtensionAndReturnId("ext2");
	AddGeometryAndLoadExtension(extension_id1,
	kWindowId,
	gfx::Rect(4, 5, 31, 43),
	gfx::Rect(0, 0, 1600, 900),
	ui::SHOW_STATE_NORMAL);
	ASSERT_FALSE(cache_->GetGeometry(extension_id2, kWindowId, NULL, NULL, NULL));
	}

	// Test getting geometry for an unknown window in a known extension.
	TEST_F(AppWindowGeometryCacheTest, GetGeometryUnkownWindow) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	AddGeometryAndLoadExtension(extension_id,
	kWindowId,
	gfx::Rect(4, 5, 31, 43),
	gfx::Rect(0, 0, 1600, 900),
	ui::SHOW_STATE_NORMAL);
	ASSERT_FALSE(cache_->GetGeometry(extension_id, kWindowId2, NULL, NULL, NULL));
	}

	// Test that loading geometry, screen_bounds and state from the store works
	// correctly.
	TEST_F(AppWindowGeometryCacheTest, GetGeometryAndStateFromStore) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	gfx::Rect bounds(4, 5, 31, 43);
	gfx::Rect screen_bounds(0, 0, 1600, 900);
	ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
	AddGeometryAndLoadExtension(
	extension_id, kWindowId, bounds, screen_bounds, state);
	gfx::Rect new_bounds;
	gfx::Rect new_screen_bounds;
	ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
	ASSERT_TRUE(cache_->GetGeometry(
	extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_EQ(bounds, new_bounds);
	ASSERT_EQ(screen_bounds, new_screen_bounds);
	ASSERT_EQ(state, new_state);
	}

	// Test corrupt bounds will not be loaded.
	TEST_F(AppWindowGeometryCacheTest, CorruptBounds) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	gfx::Rect bounds;
	gfx::Rect screen_bounds(0, 0, 1600, 900);
	ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
	AddGeometryAndLoadExtension(
	extension_id, kWindowId, bounds, screen_bounds, state);
	gfx::Rect new_bounds;
	gfx::Rect new_screen_bounds;
	ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
	ASSERT_FALSE(cache_->GetGeometry(
	extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_TRUE(new_bounds.IsEmpty());
	ASSERT_TRUE(new_screen_bounds.IsEmpty());
	ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
	}

	// Test corrupt screen bounds will not be loaded.
	TEST_F(AppWindowGeometryCacheTest, CorruptScreenBounds) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	gfx::Rect bounds(4, 5, 31, 43);
	gfx::Rect screen_bounds;
	ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
	AddGeometryAndLoadExtension(
	extension_id, kWindowId, bounds, screen_bounds, state);
	gfx::Rect new_bounds;
	gfx::Rect new_screen_bounds;
	ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
	ASSERT_FALSE(cache_->GetGeometry(
	extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_TRUE(new_bounds.IsEmpty());
	ASSERT_TRUE(new_screen_bounds.IsEmpty());
	ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
	}

	// Test corrupt state will not be loaded.
	TEST_F(AppWindowGeometryCacheTest, CorruptState) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	gfx::Rect bounds(4, 5, 31, 43);
	gfx::Rect screen_bounds(0, 0, 1600, 900);
	ui::WindowShowState state = ui::SHOW_STATE_DEFAULT;
	AddGeometryAndLoadExtension(
	extension_id, kWindowId, bounds, screen_bounds, state);
	gfx::Rect new_bounds;
	gfx::Rect new_screen_bounds;
	ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
	ASSERT_FALSE(cache_->GetGeometry(
	extension_id, kWindowId, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_TRUE(new_bounds.IsEmpty());
	ASSERT_TRUE(new_screen_bounds.IsEmpty());
	ASSERT_EQ(new_state, ui::SHOW_STATE_DEFAULT);
	}

	// Test saving geometry, screen_bounds and state to the cache and state store,
	// and reading it back.
	TEST_F(AppWindowGeometryCacheTest, SaveGeometryAndStateToStore) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	const std::string window_id(kWindowId);

	// inform cache of extension
	LoadExtension(extension_id);

	// update geometry stored in cache
	gfx::Rect bounds(4, 5, 31, 43);
	gfx::Rect screen_bounds(0, 0, 1600, 900);
	ui::WindowShowState state = ui::SHOW_STATE_NORMAL;
	cache_->SaveGeometry(extension_id, window_id, bounds, screen_bounds, state);

	// make sure that immediately reading back geometry works
	gfx::Rect new_bounds;
	gfx::Rect new_screen_bounds;
	ui::WindowShowState new_state = ui::SHOW_STATE_DEFAULT;
	ASSERT_TRUE(cache_->GetGeometry(
	extension_id, window_id, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_EQ(bounds, new_bounds);
	ASSERT_EQ(screen_bounds, new_screen_bounds);
	ASSERT_EQ(state, new_state);

	// unload extension to force cache to save data to the state store
	UnloadExtension(extension_id);

	// check if geometry got stored correctly in the state store
	const base::DictionaryValue* dict =
	prefs_->prefs()->GetGeometryCache(extension_id);
	ASSERT_TRUE(dict);

	ASSERT_TRUE(dict->HasKey(window_id));
	int v;
	ASSERT_TRUE(dict->GetInteger(window_id + ".x", &v));
	ASSERT_EQ(bounds.x(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".y", &v));
	ASSERT_EQ(bounds.y(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".w", &v));
	ASSERT_EQ(bounds.width(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".h", &v));
	ASSERT_EQ(bounds.height(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_x", &v));
	ASSERT_EQ(screen_bounds.x(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_y", &v));
	ASSERT_EQ(screen_bounds.y(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_w", &v));
	ASSERT_EQ(screen_bounds.width(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".screen_bounds_h", &v));
	ASSERT_EQ(screen_bounds.height(), v);
	ASSERT_TRUE(dict->GetInteger(window_id + ".state", &v));
	ASSERT_EQ(state, v);

	// reload extension
	LoadExtension(extension_id);
	// and make sure the geometry got reloaded properly too
	ASSERT_TRUE(cache_->GetGeometry(
	extension_id, window_id, &new_bounds, &new_screen_bounds, &new_state));
	ASSERT_EQ(bounds, new_bounds);
	ASSERT_EQ(screen_bounds, new_screen_bounds);
	ASSERT_EQ(state, new_state);
	}

	// Tests that we won't do writes to the state store for SaveGeometry calls
	// which don't change the state we already have.
	TEST_F(AppWindowGeometryCacheTest, NoDuplicateWrites) {
	using testing::_;
	using testing::Mock;

	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	gfx::Rect bounds1(100, 200, 300, 400);
	gfx::Rect bounds2(200, 400, 600, 800);
	gfx::Rect bounds2_duplicate(200, 400, 600, 800);

	gfx::Rect screen_bounds1(0, 0, 1600, 900);
	gfx::Rect screen_bounds2(0, 0, 1366, 768);
	gfx::Rect screen_bounds2_duplicate(0, 0, 1366, 768);

	MockPrefChangeCallback observer(prefs_->pref_service());
	PrefChangeRegistrar registrar;
	registrar.Init(prefs_->pref_service());
	registrar.Add("extensions.settings", observer.GetCallback());

	// Write the first bounds - it should do > 0 writes.
	EXPECT_CALL(observer, OnPreferenceChanged(_));
	cache_->SaveGeometry(
	extension_id, kWindowId, bounds1, screen_bounds1, ui::SHOW_STATE_NORMAL);
	WaitForSync();
	Mock::VerifyAndClearExpectations(&observer);

	// Write a different bounds - it should also do > 0 writes.
	EXPECT_CALL(observer, OnPreferenceChanged(_));
	cache_->SaveGeometry(
	extension_id, kWindowId, bounds2, screen_bounds1, ui::SHOW_STATE_NORMAL);
	WaitForSync();
	Mock::VerifyAndClearExpectations(&observer);

	// Write a different screen bounds - it should also do > 0 writes.
	EXPECT_CALL(observer, OnPreferenceChanged(_));
	cache_->SaveGeometry(
	extension_id, kWindowId, bounds2, screen_bounds2, ui::SHOW_STATE_NORMAL);
	WaitForSync();
	Mock::VerifyAndClearExpectations(&observer);

	// Write a different state - it should also do > 0 writes.
	EXPECT_CALL(observer, OnPreferenceChanged(_));
	cache_->SaveGeometry(extension_id,
	kWindowId,
	bounds2,
	screen_bounds2,
	ui::SHOW_STATE_MAXIMIZED);
	WaitForSync();
	Mock::VerifyAndClearExpectations(&observer);

	// Write a bounds, screen bounds and state that's a duplicate of what we
	// already have. This should not do any writes.
	EXPECT_CALL(observer, OnPreferenceChanged(_)).Times(0);
	cache_->SaveGeometry(extension_id,
	kWindowId,
	bounds2_duplicate,
	screen_bounds2_duplicate,
	ui::SHOW_STATE_MAXIMIZED);
	WaitForSync();
	Mock::VerifyAndClearExpectations(&observer);
	}

	// Tests that no more than kMaxCachedWindows windows will be cached.
	TEST_F(AppWindowGeometryCacheTest, MaxWindows) {
	const std::string extension_id = prefs_->AddExtensionAndReturnId("ext1");
	// inform cache of extension
	LoadExtension(extension_id);

	gfx::Rect bounds(4, 5, 31, 43);
	gfx::Rect screen_bounds(0, 0, 1600, 900);
	for (size_t i = 0; i < AppWindowGeometryCache::kMaxCachedWindows + 1; ++i) {
	std::string window_id = "window_" + base::IntToString(i);
	cache_->SaveGeometry(
	extension_id, window_id, bounds, screen_bounds, ui::SHOW_STATE_NORMAL);
	}

	// The first added window should no longer have cached geometry.
	EXPECT_FALSE(cache_->GetGeometry(extension_id, "window_0", NULL, NULL, NULL));
	// All other windows should still exist.
	for (size_t i = 1; i < AppWindowGeometryCache::kMaxCachedWindows + 1; ++i) {
	std::string window_id = "window_" + base::IntToString(i);
	EXPECT_TRUE(cache_->GetGeometry(extension_id, window_id, NULL, NULL, NULL));
	}
	}

	} // namespace apps