Split FaviconService and FaviconServiceImpl.

ios/chrome/browser/ui/history/favicon_view_provider_unittest.mm

 // Copyright 2016 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.
 
 #import "ios/chrome/browser/ui/history/favicon_view_provider.h"
 
 #include <memory>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/path_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "components/favicon/core/favicon_client.h"
-#include "components/favicon/core/favicon_service.h"
 #include "components/favicon/core/large_icon_service.h"
+#include "components/favicon/core/test/mock_favicon_service.h"
 #include "components/favicon_base/fallback_icon_style.h"
 #include "components/favicon_base/favicon_types.h"
 #include "ios/chrome/browser/chrome_paths.h"
 #include "ios/web/public/test/test_web_thread.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #include "skia/ext/skia_utils_ios.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 #include "third_party/ocmock/OCMock/OCMock.h"
 #include "third_party/ocmock/gtest_support.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "url/gurl.h"
 
 @interface FaviconViewProvider (Testing)
 @property(nonatomic, retain) UIImage* favicon;
 @property(nonatomic, copy) NSString* fallbackText;
 @property(nonatomic, retain) UIColor* fallbackBackgroundColor;
 @property(nonatomic, retain) UIColor* fallbackTextColor;
 @end
 
 namespace {
 
+using favicon::PostCallbackWithResult;
+using testing::WithArg;
+using testing::_;
+
 // Dummy URL for the favicon case.
 const char kTestFaviconURL[] = "http://test/favicon";
 // Dummy URL for the fallback case.
 const char kTestFallbackURL[] = "http://test/fallback";
 // Dummy icon URL.
 const char kTestFaviconIconURL[] = "http://test/icons/favicon";
 
 // Size of dummy favicon image.
 const CGFloat kTestFaviconSize = 57;
 
-// Returns a dummy bitmap result for favicon test URL, and an empty result
-// otherwise.
-favicon_base::FaviconRawBitmapResult CreateTestBitmap(const GURL& url) {
+favicon_base::FaviconRawBitmapResult CreateTestBitmap() {
   favicon_base::FaviconRawBitmapResult result;
-  if (url == GURL(kTestFaviconURL)) {
-    result.expired = false;
-    base::FilePath favicon_path;
-    PathService::Get(ios::DIR_TEST_DATA, &favicon_path);
-    favicon_path =
-        favicon_path.Append(FILE_PATH_LITERAL("favicon/test_favicon.png"));
-    NSData* favicon_data = [NSData
-        dataWithContentsOfFile:base::SysUTF8ToNSString(favicon_path.value())];
-    scoped_refptr<base::RefCountedBytes> data(new base::RefCountedBytes(
-        static_cast<const unsigned char*>([favicon_data bytes]),
-        [favicon_data length]));
+  result.expired = false;
+  base::FilePath favicon_path;
+  PathService::Get(ios::DIR_TEST_DATA, &favicon_path);
+  favicon_path =
+      favicon_path.Append(FILE_PATH_LITERAL("favicon/test_favicon.png"));
+  NSData* favicon_data = [NSData
+      dataWithContentsOfFile:base::SysUTF8ToNSString(favicon_path.value())];
+  scoped_refptr<base::RefCountedBytes> data(new base::RefCountedBytes(
+      static_cast<const unsigned char*>([favicon_data bytes]),
+      [favicon_data length]));
 
-    result.bitmap_data = data;
-    CGFloat scaled_size = [UIScreen mainScreen].scale * kTestFaviconSize;
-    result.pixel_size = gfx::Size(scaled_size, scaled_size);
-    result.icon_url = GURL(kTestFaviconIconURL);
-    result.icon_type = favicon_base::TOUCH_ICON;
-    CHECK(result.is_valid());
-  }
+  result.bitmap_data = data;
+  CGFloat scaled_size = [UIScreen mainScreen].scale * kTestFaviconSize;
+  result.pixel_size = gfx::Size(scaled_size, scaled_size);
+  result.icon_url = GURL(kTestFaviconIconURL);
+  result.icon_type = favicon_base::TOUCH_ICON;
+  CHECK(result.is_valid());
   return result;
 }
 
-// A mock FaviconService that emits pre-programmed response.
-class MockFaviconService : public favicon::FaviconService {
- public:
-  MockFaviconService() : FaviconService(nullptr, nullptr) {}
-
-  ~MockFaviconService() override {}
-
-  base::CancelableTaskTracker::TaskId GetLargestRawFaviconForPageURL(
-      const GURL& page_url,
-      const std::vector<int>& icon_types,
-      int minimum_size_in_pixels,
-      const favicon_base::FaviconRawBitmapCallback& callback,
-      base::CancelableTaskTracker* tracker) override {
-    favicon_base::FaviconRawBitmapResult mock_result =
-        CreateTestBitmap(page_url);
-    return tracker->PostTask(base::ThreadTaskRunnerHandle::Get().get(),
-                             FROM_HERE, base::Bind(callback, mock_result));
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockFaviconService);
-};
-
-// This class provides access to LargeIconService internals, using the current
-// thread's task runner for testing.
-class TestLargeIconService : public favicon::LargeIconService {
- public:
-  explicit TestLargeIconService(MockFaviconService* mock_favicon_service)
-      : LargeIconService(mock_favicon_service,
-                         base::ThreadTaskRunnerHandle::Get()) {}
-  ~TestLargeIconService() override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestLargeIconService);
-};
-
 class FaviconViewProviderTest : public PlatformTest {
  protected:
   void SetUp() override {
     DCHECK_CURRENTLY_ON(web::WebThread::UI);
     PlatformTest::SetUp();
-    mock_favicon_service_.reset(new MockFaviconService());
-    large_icon_service_.reset(
-        new TestLargeIconService(mock_favicon_service_.get()));
+    large_icon_service_.reset(new favicon::LargeIconService(
+        &mock_favicon_service_, base::ThreadTaskRunnerHandle::Get()));
+
+    EXPECT_CALL(mock_favicon_service_, GetLargestRawFaviconForPageURL(
+                                           GURL(kTestFaviconURL), _, _, _, _))
+        .WillRepeatedly(WithArg<3>(PostCallbackWithResult(CreateTestBitmap())));
   }
 
   web::TestWebThreadBundle thread_bundle_;
-  std::unique_ptr<MockFaviconService> mock_favicon_service_;
-  std::unique_ptr<TestLargeIconService> large_icon_service_;
+  testing::StrictMock<favicon::MockFaviconService> mock_favicon_service_;
+  std::unique_ptr<favicon::LargeIconService> large_icon_service_;
   base::CancelableTaskTracker cancelable_task_tracker_;
 };
 
 // Tests that image is set when a favicon is returned from LargeIconService.
 TEST_F(FaviconViewProviderTest, Favicon) {
   id mock_delegate =
       [OCMockObject mockForProtocol:@protocol(FaviconViewProviderDelegate)];
   base::scoped_nsobject<FaviconViewProvider> viewProvider(
       [[FaviconViewProvider alloc] initWithURL:GURL(kTestFaviconURL)
                                    faviconSize:kTestFaviconSize
@@ skipping 36 matching lines @@
     EXPECT_NSEQ(defaultText, viewProvider.fallbackText);
     EXPECT_NSEQ(defaultTextColor, viewProvider.fallbackTextColor);
     EXPECT_NSEQ(defaultBackgroundColor, viewProvider.fallbackBackgroundColor);
   };
   [[[mock_delegate stub] andDo:confirmationBlock]
       faviconViewProviderFaviconDidLoad:item];
   EXPECT_OCMOCK_VERIFY(mock_delegate);
 }
 
 }  // namespace