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// 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/basictypes.h"
#include "base/stringprintf.h"
#include "chrome/browser/history/top_sites.h"
#include "chrome/browser/tab_contents/thumbnail_generator.h"
#include "chrome/common/render_messages.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/test/mock_render_process_host.h"
#include "content/test/test_renderer_host.h"
#include "skia/ext/platform_canvas.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkColorPriv.h"
#include "ui/gfx/canvas.h"
#include "ui/surface/transport_dib.h"
using content::WebContents;
typedef testing::Test ThumbnailGeneratorTest;
TEST_F(ThumbnailGeneratorTest, CalculateBoringScore_Empty) {
SkBitmap bitmap;
EXPECT_DOUBLE_EQ(1.0, ThumbnailGenerator::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailGeneratorTest, CalculateBoringScore_SingleColor) {
const gfx::Size kSize(20, 10);
gfx::Canvas canvas(kSize, true);
// Fill all pixesl in black.
canvas.FillRect(gfx::Rect(kSize), SK_ColorBLACK);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The thumbnail should deserve the highest boring score.
EXPECT_DOUBLE_EQ(1.0, ThumbnailGenerator::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailGeneratorTest, CalculateBoringScore_TwoColors) {
const gfx::Size kSize(20, 10);
gfx::Canvas canvas(kSize, true);
// Fill all pixesl in black.
canvas.FillRect(gfx::Rect(kSize), SK_ColorBLACK);
// Fill the left half pixels in white.
canvas.FillRect(gfx::Rect(0, 0, kSize.width() / 2, kSize.height()),
SK_ColorWHITE);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
ASSERT_EQ(kSize.width(), bitmap.width());
ASSERT_EQ(kSize.height(), bitmap.height());
// The thumbnail should be less boring because two colors are used.
EXPECT_DOUBLE_EQ(0.5, ThumbnailGenerator::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailGeneratorTest, GetClippedBitmap_TallerThanWide) {
// The input bitmap is vertically long.
gfx::Canvas canvas(gfx::Size(40, 90), true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailGenerator::ClipResult clip_result = ThumbnailGenerator::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailGenerator::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was taller than wide.
EXPECT_EQ(ThumbnailGenerator::kTallerThanWide, clip_result);
}
TEST_F(ThumbnailGeneratorTest, GetClippedBitmap_WiderThanTall) {
// The input bitmap is horizontally long.
gfx::Canvas canvas(gfx::Size(70, 40), true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailGenerator::ClipResult clip_result = ThumbnailGenerator::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailGenerator::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was wider than tall.
EXPECT_EQ(ThumbnailGenerator::kWiderThanTall, clip_result);
}
TEST_F(ThumbnailGeneratorTest, GetClippedBitmap_TooWiderThanTall) {
// The input bitmap is horizontally very long.
gfx::Canvas canvas(gfx::Size(90, 40), true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailGenerator::ClipResult clip_result = ThumbnailGenerator::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailGenerator::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was wider than tall.
EXPECT_EQ(ThumbnailGenerator::kTooWiderThanTall, clip_result);
}
TEST_F(ThumbnailGeneratorTest, GetClippedBitmap_NotClipped) {
// The input bitmap is square.
gfx::Canvas canvas(gfx::Size(40, 40), true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailGenerator::ClipResult clip_result = ThumbnailGenerator::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailGenerator::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// There was no need to clip.
EXPECT_EQ(ThumbnailGenerator::kNotClipped, clip_result);
}
TEST_F(ThumbnailGeneratorTest, GetClippedBitmap_NonSquareOutput) {
// The input bitmap is square.
gfx::Canvas canvas(gfx::Size(40, 40), true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is horizontally long.
ThumbnailGenerator::ClipResult clip_result = ThumbnailGenerator::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailGenerator::GetClippedBitmap(
bitmap, 20, 10, &clip_result);
// The clipped bitmap should have the same aspect ratio of the desired size.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(20, clipped_bitmap.height());
// The input was taller than wide.
EXPECT_EQ(ThumbnailGenerator::kTallerThanWide, clip_result);
}
// A mock version of TopSites, used for testing ShouldUpdateThumbnail().
class MockTopSites : public history::TopSites {
public:
explicit MockTopSites(Profile* profile)
: history::TopSites(profile),
capacity_(1) {
}
// history::TopSites overrides.
virtual bool IsFull() {
return known_url_map_.size() >= capacity_;
}
virtual bool IsKnownURL(const GURL& url) {
return known_url_map_.find(url.spec()) != known_url_map_.end();
}
virtual bool GetPageThumbnailScore(const GURL& url, ThumbnailScore* score) {
std::map<std::string, ThumbnailScore>::const_iterator iter =
known_url_map_.find(url.spec());
if (iter == known_url_map_.end()) {
return false;
} else {
*score = iter->second;
return true;
}
}
// Adds a known URL with the associated thumbnail score.
void AddKnownURL(const GURL& url, const ThumbnailScore& score) {
known_url_map_[url.spec()] = score;
}
private:
virtual ~MockTopSites() {}
size_t capacity_;
std::map<std::string, ThumbnailScore> known_url_map_;
};
TEST_F(ThumbnailGeneratorTest, ShouldUpdateThumbnail) {
const GURL kGoodURL("http://www.google.com/");
const GURL kBadURL("chrome://newtab");
// Set up the profile.
TestingProfile profile;
// Set up the top sites service.
ScopedTempDir temp_dir;
ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
scoped_refptr<MockTopSites> top_sites(new MockTopSites(&profile));
// Should be false because it's a bad URL.
EXPECT_FALSE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kBadURL));
// Should be true, as it's a good URL.
EXPECT_TRUE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kGoodURL));
// Should be false, if it's in the incognito mode.
profile.set_incognito(true);
EXPECT_FALSE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kGoodURL));
// Should be true again, once turning off the incognito mode.
profile.set_incognito(false);
EXPECT_TRUE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kGoodURL));
// Add a known URL. This makes the top sites data full.
ThumbnailScore bad_score;
bad_score.time_at_snapshot = base::Time::UnixEpoch(); // Ancient time stamp.
top_sites->AddKnownURL(kGoodURL, bad_score);
ASSERT_TRUE(top_sites->IsFull());
// Should be false, as the top sites data is full, and the new URL is
// not known.
const GURL kAnotherGoodURL("http://www.youtube.com/");
EXPECT_FALSE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kAnotherGoodURL));
// Should be true, as the existing thumbnail is bad (i.e need a better one).
EXPECT_TRUE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kGoodURL));
// Replace the thumbnail score with a really good one.
ThumbnailScore good_score;
good_score.time_at_snapshot = base::Time::Now(); // Very new.
good_score.at_top = true;
good_score.good_clipping = true;
good_score.boring_score = 0.0;
good_score.load_completed = true;
top_sites->AddKnownURL(kGoodURL, good_score);
// Should be false, as the existing thumbnail is good enough (i.e. don't
// need to replace the existing thumbnail which is new and good).
EXPECT_FALSE(ThumbnailGenerator::ShouldUpdateThumbnail(
&profile, top_sites.get(), kGoodURL));
}
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