First part of remembering platform app window geometry.

chrome/browser/extensions/shell_window_geometry_cache_unittest.cc

+// Copyright (c) 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 "base/memory/scoped_ptr.h"
+#include "chrome/browser/extensions/shell_window_geometry_cache.h"
+#include "chrome/browser/extensions/state_store.h"
+#include "chrome/browser/value_store/testing_value_store.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/test_browser_thread.h"
+#include "content/public/test/test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+  static const char kExtensionId[] = "extensionid";
+  static const char kExtensionId2[] = "extensionid2";
+  static const char kWindowId[] = "windowid";
+  static const char kWindowId2[] = "windowid2";
+
+  const char kWindowGeometryKey[] = "window_geometry";
+} // namespace
+
+using content::BrowserThread;
+
+namespace extensions {
+
+// Base class for tests.
+class ShellWindowGeometryCacheTest : public testing::Test {
+ public:
+  ShellWindowGeometryCacheTest() :
+        ui_thread_(BrowserThread::UI, &message_loop_),
+        file_thread_(BrowserThread::FILE, &message_loop_),
+        value_store_(new TestingValueStore()) {
+
+    state_store_.reset(new StateStore(&profile_, value_store_));
+    cache_.reset(
+        new ShellWindowGeometryCache(&profile_, state_store_.get()));
+  }
+
+  void AddGeometryAndLoadExtension(const std::string& extension_id,
+                                   const std::string& window_id,
+                                   const gfx::Rect& bounds);
+  void LoadExtension(const std::string& extension_id);
+  void UnloadExtension(const std::string& extension_id);
+
+ protected:
+  TestingProfile profile_;
+  MessageLoopForUI message_loop_;
+  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThread file_thread_;
+  TestingValueStore* value_store_;
+  scoped_ptr<StateStore> state_store_;
+  scoped_ptr<ShellWindowGeometryCache> cache_;
+};
+
+void ShellWindowGeometryCacheTest::AddGeometryAndLoadExtension(
+    const std::string& extension_id, const std::string& window_id,
+    const gfx::Rect& bounds) {
+  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());
+  dict->SetWithoutPathExpansion(window_id, value);
+  state_store_->SetExtensionValue(extension_id, kWindowGeometryKey,
+                                  scoped_ptr<base::Value>(dict.release()));
+
+  LoadExtension(extension_id);
+}
+
+void ShellWindowGeometryCacheTest::LoadExtension(
+    const std::string& extension_id) {
+  cache_->OnExtensionLoaded(extension_id);
+
+  // TODO(mek): not sure this is the best way to ensure that loading of data
+  // from the store has actually finished for the given extension id.
+  content::RunAllPendingInMessageLoop();
+}
+
+void ShellWindowGeometryCacheTest::UnloadExtension(
+    const std::string& extension_id) {
+  cache_->OnExtensionUnloaded(extension_id);
+
+  // TODO(mek): not sure this is the best way to ensure that saving of data to
+  // the store has actually finished for the given extension id.
+  content::RunAllPendingInMessageLoop();
+}
+
+// Test getting geometry from an empty store.
+TEST_F(ShellWindowGeometryCacheTest, GetGeometryEmptyStore) {
+  gfx::Rect bounds;
+  ASSERT_FALSE(cache_->GetGeometry(kExtensionId, kWindowId, &bounds));
+}
+
+// Test getting geometry for an unknown extension.
+TEST_F(ShellWindowGeometryCacheTest, GetGeometryUnkownExtension) {
+  AddGeometryAndLoadExtension(kExtensionId, kWindowId,
+                              gfx::Rect(4, 5, 31, 43));
+  gfx::Rect bounds;
+  ASSERT_FALSE(cache_->GetGeometry(kExtensionId2, kWindowId, &bounds));
+}
+
+// Test getting geometry for an unknown window in a known extension.
+TEST_F(ShellWindowGeometryCacheTest, GetGeometryUnkownWindow) {
+  AddGeometryAndLoadExtension(kExtensionId, kWindowId,
+                              gfx::Rect(4, 5, 31, 43));
+  gfx::Rect bounds;
+  ASSERT_FALSE(cache_->GetGeometry(kExtensionId, kWindowId2, &bounds));
+}
+
+// Test that loading geometry from the store works correctly.
+TEST_F(ShellWindowGeometryCacheTest, GetGeometryFromStore) {
+  gfx::Rect bounds(4, 5, 31, 43);
+  AddGeometryAndLoadExtension(kExtensionId, kWindowId, bounds);
+  gfx::Rect newBounds;
+  ASSERT_TRUE(cache_->GetGeometry(kExtensionId, kWindowId, &newBounds));
+  ASSERT_EQ(bounds, newBounds);
+}
+
+// Test saving geometry to the cache and state store, and reading it back.
+TEST_F(ShellWindowGeometryCacheTest, SaveGeometryToStore) {
+  const std::string extension_id(kExtensionId);
+  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 newBounds;
+  cache_->SaveGeometry(extension_id, window_id, bounds);
+
+  // make sure that immediately reading back geometry works
+  ASSERT_TRUE(cache_->GetGeometry(extension_id, window_id, &newBounds));
+  ASSERT_EQ(bounds, newBounds);
+
+  // 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
+  ValueStore::ReadResult result = value_store_->Get(extension_id + "." +
+                                                    kWindowGeometryKey);
+  ASSERT_FALSE(result->HasError());
+  DictionaryValue* dict;
+  ASSERT_TRUE(result->settings()->GetDictionaryWithoutPathExpansion(
+      extension_id + "." + kWindowGeometryKey, &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);
+
+  // check to make sure cache indeed doesn't know about this extension anymore
+  ASSERT_FALSE(cache_->GetGeometry(extension_id, window_id, &newBounds));
+
+  // reload extension
+  LoadExtension(extension_id);
+  // and make sure the geometry got reloaded properly too
+  ASSERT_TRUE(cache_->GetGeometry(extension_id, window_id, &newBounds));
+  ASSERT_EQ(bounds, newBounds);
+}
+
+} // namespace extensions