Change browser/page action default icon defined in manifest to support hidpi.

chrome/common/extensions/manifest_tests/extension_manifests_scriptbadge_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 "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
-
 #include "chrome/common/extensions/extension_action.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/extension_switch_utils.h"
+#include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "grit/theme_resources.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/skia_util.h"
 
 namespace errors = extension_manifest_errors;
 namespace switch_utils = extensions::switch_utils;
 using extensions::Extension;
+using ::testing::_;
+using ::testing::Return;
 
 namespace {
 
 bool ImagesAreEqual(const gfx::Image& i1, const gfx::Image& i2) {
   return gfx::BitmapsAreEqual(*i1.ToSkBitmap(), *i2.ToSkBitmap());
 }
 
+SkBitmap CreateTransparentBitmap(int size) {
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, size, size);
+  bitmap.allocPixels();
+  bitmap.eraseColor(SkColorSetARGB(0, 0, 0, 0));
+  return bitmap;
+}
+
 std::vector<Extension::InstallWarning> StripMissingFlagWarning(
     const std::vector<Extension::InstallWarning>& install_warnings) {
   std::vector<Extension::InstallWarning> result;
   for (size_t i = 0; i < install_warnings.size(); ++i) {
     if (install_warnings[i].message != errors::kScriptBadgeRequiresFlag)
       result.push_back(install_warnings[i]);
   }
   return result;
 }
 
+class MockExtensionActionIconFactory : public ExtensionAction::IconFactory {
+ public:
+  ~MockExtensionActionIconFactory() {}
+
+  MOCK_METHOD2(GetIcon, gfx::ImageSkia(const ExtensionIconSet* icon_set,
+                                       ExtensionAction::Type type));
+};
+
 TEST_F(ExtensionManifestTest, ScriptBadgeBasic) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("script_badge_basic.json"));
   ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->script_badge());
   EXPECT_THAT(StripMissingFlagWarning(extension->install_warnings()),
               testing::ElementsAre(/*empty*/));
 
+  const ExtensionIconSet* default_icon =
+      extension->script_badge()->default_icon();
+  // Default icon set should not be NULL.
+  ASSERT_TRUE(default_icon);
+
+  // Verify that correnct icon paths are registered in default_icon.
+  EXPECT_EQ(2u, default_icon->map().size());
+  EXPECT_EQ("icon16.png",
+            default_icon->Get(extension_misc::EXTENSION_ICON_BITTY,
+                              ExtensionIconSet::MATCH_EXACTLY));
+  EXPECT_EQ("icon32.png",
+            default_icon->Get(2 * extension_misc::EXTENSION_ICON_BITTY,
+                              ExtensionIconSet::MATCH_EXACTLY));
+
+  // Since default icon set is defined in the manifest, extension action will
+  // try to load an image ofr the default icon. Let's return transparent bitmap
+  // and check it is returned by extension action.
+  SkBitmap transparent_bitmap = CreateTransparentBitmap(16);
+  MockExtensionActionIconFactory mock_icon_factory;
+  EXPECT_CALL(mock_icon_factory,
+              GetIcon(default_icon, ExtensionAction::TYPE_SCRIPT_BADGE))
+      .WillOnce(Return(gfx::ImageSkia(transparent_bitmap)));
+
   EXPECT_EQ("my extension", extension->script_badge()->GetTitle(
       ExtensionAction::kDefaultTabId));
   EXPECT_TRUE(extension->script_badge()->HasPopup(
       ExtensionAction::kDefaultTabId));
   EXPECT_TRUE(ImagesAreEqual(
-      ui::ResourceBundle::GetSharedInstance().GetImageNamed(
-          IDR_EXTENSIONS_FAVICON),
-      extension->script_badge()->GetIcon(ExtensionAction::kDefaultTabId)));
-  EXPECT_EQ("icon16.png", extension->script_badge()->default_icon_path());
+      gfx::Image(transparent_bitmap),
+      extension->script_badge()->GetIcon(ExtensionAction::kDefaultTabId,
+                                         &mock_icon_factory)));
 }
 
 TEST_F(ExtensionManifestTest, ScriptBadgeExplicitTitleAndIconsIgnored) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("script_badge_title_icons_ignored.json"));
   ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->script_badge());
 
   EXPECT_THAT(StripMissingFlagWarning(extension->install_warnings()),
               testing::ElementsAre(
                   Extension::InstallWarning(
                       Extension::InstallWarning::FORMAT_TEXT,
                       errors::kScriptBadgeTitleIgnored),
                   Extension::InstallWarning(
                       Extension::InstallWarning::FORMAT_TEXT,
                       errors::kScriptBadgeIconIgnored)));
+
+  const ExtensionIconSet* default_icon =
+      extension->script_badge()->default_icon();
+  ASSERT_TRUE(default_icon);
+
+  EXPECT_EQ(1u, default_icon->map().size());
+  EXPECT_EQ("icon16.png",
+            default_icon->Get(extension_misc::EXTENSION_ICON_BITTY,
+                              ExtensionIconSet::MATCH_EXACTLY));
+
+  // Since default icon set is defined in the manifest, extension action will
+  // try to load an image ofr the default icon. Let's return transparent bitmap
+  // and check it is returned by extension action.
+  SkBitmap transparent_bitmap = CreateTransparentBitmap(16);
+  MockExtensionActionIconFactory mock_icon_factory;
+  EXPECT_CALL(mock_icon_factory,
+              GetIcon(default_icon, ExtensionAction::TYPE_SCRIPT_BADGE))
+      .WillOnce(Return(gfx::ImageSkia(transparent_bitmap)));
+
   EXPECT_EQ("my extension", extension->script_badge()->GetTitle(
       ExtensionAction::kDefaultTabId));
   EXPECT_TRUE(ImagesAreEqual(
-      ui::ResourceBundle::GetSharedInstance().GetImageNamed(
-          IDR_EXTENSIONS_FAVICON),
-      extension->script_badge()->GetIcon(ExtensionAction::kDefaultTabId)));
-  EXPECT_EQ("icon16.png", extension->script_badge()->default_icon_path());
+      gfx::Image(transparent_bitmap),
+      extension->script_badge()->
+          GetIcon(ExtensionAction::kDefaultTabId, &mock_icon_factory)));
 }
 
 TEST_F(ExtensionManifestTest, ScriptBadgeIconFallsBackToPuzzlePiece) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("script_badge_only_use_icon16.json"));
   ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->script_badge());
   EXPECT_THAT(extension->install_warnings(),
               testing::ElementsAre(/*empty*/));
 
-  EXPECT_EQ("", extension->script_badge()->default_icon_path())
+  MockExtensionActionIconFactory mock_icon_factory;
+  EXPECT_CALL(mock_icon_factory, GetIcon(_, _)).Times(0);
+
+  EXPECT_FALSE(extension->script_badge()->default_icon())
       << "Should not fall back to the 64px icon.";
-  EXPECT_FALSE(extension->script_badge()->GetIcon(
-      ExtensionAction::kDefaultTabId).IsEmpty())
-      << "Should set the puzzle piece as the default, but there's no way "
-      << "to assert in a unittest what the image looks like.";
+  EXPECT_EQ(NULL, extension->script_badge()->default_icon());
+  EXPECT_TRUE(ImagesAreEqual(
+      ui::ResourceBundle::GetSharedInstance().GetImageNamed(
+          IDR_EXTENSIONS_FAVICON),
+      extension->script_badge()->GetIcon(ExtensionAction::kDefaultTabId,
+                                         &mock_icon_factory)));
 }
 
 }  // namespace