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// 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/enhanced_bookmarks/image_store.h"
#import <UIKit/UIKit.h>
#include "base/files/scoped_temp_dir.h"
#include "base/mac/scoped_cftyperef.h"
#include "components/enhanced_bookmarks/image_store_util.h"
#include "components/enhanced_bookmarks/persistent_image_store.h"
#include "components/enhanced_bookmarks/test_image_store.h"
#include "testing/platform_test.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image.h"
#include "url/gurl.h"
namespace {
// Generates a gfx::Image with a random UIImage representation. Uses off-center
// circle gradient to make all pixels slightly different in order to detect
// small image alterations.
gfx::Image GenerateRandomUIImage(gfx::Size& size, float scale) {
UIGraphicsBeginImageContextWithOptions(CGSizeMake(size.width(),
size.height()),
YES, // opaque.
scale);
// Create the gradient's colors.
CGFloat locations[] = { 0.0, 1.0 };
CGFloat components[] = { rand()/CGFloat(RAND_MAX), // Start color r
rand()/CGFloat(RAND_MAX), // g
rand()/CGFloat(RAND_MAX), // b
1.0, // Alpha
rand()/CGFloat(RAND_MAX), // End color r
rand()/CGFloat(RAND_MAX), // g
rand()/CGFloat(RAND_MAX), // b
1.0 }; // Alpha
CGPoint center = CGPointMake(size.width() / 3, size.height() / 3);
CGFloat radius = MAX(size.width(), size.height());
base::ScopedCFTypeRef<CGColorSpaceRef>
colorspace(CGColorSpaceCreateDeviceRGB());
base::ScopedCFTypeRef<CGGradientRef>
gradient(CGGradientCreateWithColorComponents(colorspace,
components,
locations,
arraysize(locations)));
CGContextDrawRadialGradient(UIGraphicsGetCurrentContext(),
gradient,
center,
0,
center,
radius,
kCGGradientDrawsAfterEndLocation);
UIImage* image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return gfx::Image([image retain]);
}
// 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_bytes =
enhanced_bookmarks::BytesForImage(image_1);
scoped_refptr<base::RefCountedMemory> image_2_bytes =
enhanced_bookmarks::BytesForImage(image_2);
if (image_1_bytes->size() != image_2_bytes->size())
return false;
return !memcmp(image_1_bytes->front(),
image_2_bytes->front(),
image_1_bytes->size());
}
// Factory functions for creating instances of the implementations.
template <class T>
ImageStore* CreateStore(base::ScopedTempDir& folder);
template <>
ImageStore* CreateStore<TestImageStore>(
base::ScopedTempDir& folder) {
return new TestImageStore();
}
template <>
ImageStore* CreateStore<PersistentImageStore>(
base::ScopedTempDir& folder) {
return new PersistentImageStore(folder.path());
}
// Methods to check if persistence is on or not.
template <class T> bool ShouldPersist();
template <> bool ShouldPersist<TestImageStore>() { return false; }
template <> bool ShouldPersist<PersistentImageStore>() { return true; }
// Test fixture class template for the abstract API.
template <class T>
class ImageStoreUnitTestIOS : public PlatformTest {
protected:
ImageStoreUnitTestIOS() {}
virtual ~ImageStoreUnitTestIOS() {}
virtual void SetUp() override {
bool success = temp_dir_.CreateUniqueTempDir();
ASSERT_TRUE(success);
store_.reset(CreateStore<T>(temp_dir_));
}
virtual void TearDown() override {
if (store_ && use_persistent_store())
store_->ClearAll();
}
bool use_persistent_store() const { return ShouldPersist<T>(); }
void ResetStore() { store_.reset(CreateStore<T>(temp_dir_)); }
// The directory the database is saved into.
base::ScopedTempDir temp_dir_;
// The object the fixture is testing, via its base interface.
scoped_ptr<ImageStore> store_;
private:
DISALLOW_COPY_AND_ASSIGN(ImageStoreUnitTestIOS);
};
// The list of implementations of the abstract API that are going to be tested.
typedef testing::Types<TestImageStore,
PersistentImageStore> Implementations;
TYPED_TEST_CASE(ImageStoreUnitTestIOS, Implementations);
TYPED_TEST(ImageStoreUnitTestIOS, StoringImagesPreservesScale) {
CGFloat scales[] = { 0.0, 1.0, 2.0 };
gfx::Size image_size(42, 24);
for (unsigned long i = 0; i < arraysize(scales); i++) {
gfx::Image src_image(GenerateRandomUIImage(image_size, scales[i]));
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);
EXPECT_EQ(image_url, image_info.second);
EXPECT_TRUE(CompareImages(src_image, image_info.first));
}
}
} // namespace
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