Local salient image storage for enhanced bookmark experiment.

components/bookmarks_enhanced/image_store_unittest.cc

Index: components/bookmarks_enhanced/image_store_unittest.cc
diff --git a/components/bookmarks_enhanced/image_store_unittest.cc b/components/bookmarks_enhanced/image_store_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2a1173b448b2f0a4a9d7643ecd6647fe0f0a6809
--- /dev/null
+++ b/components/bookmarks_enhanced/image_store_unittest.cc
@@ -0,0 +1,207 @@
+// 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 "components/bookmarks_enhanced/image_store.h"
+
+#include "base/files/scoped_temp_dir.h"
+#include "components/bookmarks_enhanced/image_store_util.h"
+#include "components/bookmarks_enhanced/memory_image_store.h"
+#include "components/bookmarks_enhanced/persistent_image_store.h"
+#include "testing/platform_test.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "url/gurl.h"
+
+namespace {
+
+const SkBitmap CreateBitmap(int width, int height, int a, int r, int g, int b) {
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
+  bitmap.allocPixels();
+  bitmap.eraseARGB(a, r, g, b);
+  return bitmap;
+}
+
+gfx::Image GenerateWhiteImage() {
+  return gfx::Image::CreateFrom1xBitmap(
+      CreateBitmap(42, 24, 255, 255, 255, 255));
+}
+
+gfx::Image GenerateBlackImage(int width, int height) {
+  return gfx::Image::CreateFrom1xBitmap(
+      CreateBitmap(width, height, 255, 0, 0, 0));
+}
+
+gfx::Image GenerateBlackImage() {
+  return GenerateBlackImage(42, 24);
+}
+
+// Returns true if the two images are identical.
+bool CompareImages(const gfx::Image& image_1, const gfx::Image& image_2) {
+  if (image_1.IsEmpty() && image_2.IsEmpty())
+    return true;
+
+  if (image_1.IsEmpty() || image_2.IsEmpty())
+    return false;
+
+  scoped_refptr<base::RefCountedMemory> image_1_png =
+      bookmarks_enhanced::BytesForImage(image_1);
+  scoped_refptr<base::RefCountedMemory> image_2_png =
+      bookmarks_enhanced::BytesForImage(image_2);
+
+  if (image_1_png->size() != image_2_png->size())
+    return false;
+
+  return !memcmp(image_1_png->front(),
+                 image_2_png->front(),
+                 image_1_png->size());
+}
+
+// Factory functions for creating instances of the implementations.
+template <class T>
+scoped_refptr<ImageStore> createStore(base::ScopedTempDir& folder);
+
+template <>
+scoped_refptr<ImageStore> createStore<MemoryImageStore>(
+    base::ScopedTempDir& folder) {
+  return scoped_refptr<ImageStore>(new MemoryImageStore());
+}
+
+template <>
+scoped_refptr<ImageStore> createStore<PersistentImageStore>(
+    base::ScopedTempDir& folder) {
+  return scoped_refptr<ImageStore>(new PersistentImageStore(folder.path()));
+}
+
+// Methods to check if persistence is on or not.
+template <class T> bool shouldPersist();
+template <> bool shouldPersist<MemoryImageStore>() { return false; }
+template <> bool shouldPersist<PersistentImageStore>() { return true; }
+
+// Test fixture class template for the abstract API.
+template <class T>
+class ImageStoreUnitTest : public PlatformTest {
+ protected:
+  ImageStoreUnitTest() {}
+  virtual ~ImageStoreUnitTest() {}
+
+  virtual void SetUp() {
+    bool success = tempDir_.CreateUniqueTempDir();
+    ASSERT_TRUE(success);
+    store_ = createStore<T>(tempDir_);
+  }
+
+  void TearDown() OVERRIDE {
+    if (store_ && usePersistentStore())
+      store_->ClearAll();
+  }
+
+  bool usePersistentStore() { return shouldPersist<T>(); }
+  void resetStore() { store_ = createStore<T>(tempDir_); }
+
+  // The directory the database is saved into.
+  base::ScopedTempDir tempDir_;
+  // The object the fixture is testing, via its base interface.
+  scoped_refptr<ImageStore> store_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ImageStoreUnitTest);
+};
+
+// The list of implementations of the abstract API that are going to be tested.
+typedef testing::Types<MemoryImageStore,
+                       PersistentImageStore> Implementations;
+
+TYPED_TEST_CASE(ImageStoreUnitTest, Implementations);
+
+// All those tests are run on all the implementations.
+TYPED_TEST(ImageStoreUnitTest, startsEmpty) {
+  std::set<GURL> all_urls;
+  this->store_->GetAllPageUrls(&all_urls);
+  EXPECT_EQ(0u, all_urls.size());
+}
+
+TYPED_TEST(ImageStoreUnitTest, storeOne) {
+  this->store_->Insert(GURL("foo://bar"), GURL("a.jpg"), GenerateBlackImage());
+
+  std::set<GURL> all_urls;
+  this->store_->GetAllPageUrls(&all_urls);
+  EXPECT_EQ(1u, all_urls.size());
+  EXPECT_EQ(GURL("foo://bar"), *all_urls.begin());
+  EXPECT_TRUE(this->store_->HasKey(GURL("foo://bar")));
+}
+
+TYPED_TEST(ImageStoreUnitTest, retrieve) {
+  gfx::Image src_image = GenerateBlackImage(42, 24);
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+
+  std::pair<gfx::Image, GURL> image_info = this->store_->Get(url);
+  gfx::Size size = this->store_->GetSize(url);
+
+  EXPECT_EQ(size.width(), 42);
+  EXPECT_EQ(size.height(), 24);
+  EXPECT_EQ(image_url, image_info.second);
+  EXPECT_TRUE(CompareImages(src_image, image_info.first));
+}
+
+TYPED_TEST(ImageStoreUnitTest, erase) {
+  gfx::Image src_image = GenerateBlackImage();
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+  this->store_->Erase(url);
+
+  EXPECT_FALSE(this->store_->HasKey(url));
+  std::set<GURL> all_urls;
+  this->store_->GetAllPageUrls(&all_urls);
+  EXPECT_EQ(0u, all_urls.size());
+}
+
+TYPED_TEST(ImageStoreUnitTest, update) {
+  gfx::Image src_image1 = GenerateWhiteImage();
+  gfx::Image src_image2 = GenerateBlackImage();
+  const GURL url("foo://bar");
+  const GURL image_url1("1.jpg");
+  this->store_->Insert(url, image_url1, src_image1);
+
+  const GURL image_url2("2.jpg");
+  this->store_->Insert(url, image_url2, src_image2);
+
+  std::pair<gfx::Image, GURL> image_info = this->store_->Get(url);
+
+  EXPECT_TRUE(this->store_->HasKey(url));
+  std::set<GURL> all_urls;
+  this->store_->GetAllPageUrls(&all_urls);
+  EXPECT_EQ(1u, all_urls.size());
+  EXPECT_EQ(image_url2, image_info.second);
+  EXPECT_TRUE(CompareImages(src_image2, image_info.first));
+}
+
+TYPED_TEST(ImageStoreUnitTest, persistence) {
+  gfx::Image src_image = GenerateBlackImage();
+  const GURL url("foo://bar");
+  const GURL image_url("a.jpg");
+  this->store_->Insert(url, image_url, src_image);
+
+  this->resetStore();
+  if (this->usePersistentStore()) {
+    std::set<GURL> all_urls;
+    this->store_->GetAllPageUrls(&all_urls);
+    EXPECT_EQ(1u, all_urls.size());
+    EXPECT_EQ(GURL("foo://bar"), *all_urls.begin());
+    EXPECT_TRUE(this->store_->HasKey(GURL("foo://bar")));
+    std::pair<gfx::Image, GURL> image_info = this->store_->Get(url);
+
+    EXPECT_EQ(image_url, image_info.second);
+    EXPECT_TRUE(CompareImages(src_image, image_info.first));
+  } else {
+    std::set<GURL> all_urls;
+    this->store_->GetAllPageUrls(&all_urls);
+    EXPECT_EQ(0u, all_urls.size());
+    EXPECT_FALSE(this->store_->HasKey(GURL("foo://bar")));
+  }
+}
+
+}  // namespace