| // 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. |
| |
| #include "core/css/CSSFontFaceSource.h" |
| |
| #include "platform/fonts/FontCacheKey.h" |
| #include "platform/fonts/FontDescription.h" |
| #include "platform/fonts/FontPlatformData.h" |
| #include "platform/fonts/SimpleFontData.h" |
| #include "platform/graphics/skia/SkiaUtils.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace blink { |
| |
| class DummyFontFaceSource : public CSSFontFaceSource { |
| public: |
| PassRefPtr<SimpleFontData> createFontData(const FontDescription&) override { |
| return SimpleFontData::create( |
| FontPlatformData(SkTypeface::MakeDefault(), "", 0, false, false)); |
| } |
| |
| DummyFontFaceSource() {} |
| |
| PassRefPtr<SimpleFontData> getFontDataForSize(float size) { |
| FontDescription fontDescription; |
| fontDescription.setSizeAdjust(size); |
| fontDescription.setAdjustedSize(size); |
| return getFontData(fontDescription); |
| } |
| }; |
| |
| namespace { |
| |
| unsigned simulateHashCalculation(float size) { |
| FontDescription fontDescription; |
| fontDescription.setSizeAdjust(size); |
| fontDescription.setAdjustedSize(size); |
| return fontDescription.cacheKey(FontFaceCreationParams()).hash(); |
| } |
| } |
| |
| TEST(CSSFontFaceSourceTest, HashCollision) { |
| DummyFontFaceSource fontFaceSource; |
| // Even if the hash value collide, fontface cache should return different |
| // value for different fonts. |
| EXPECT_EQ(simulateHashCalculation(8775), simulateHashCalculation(418)); |
| EXPECT_NE(fontFaceSource.getFontDataForSize(8775), |
| fontFaceSource.getFontDataForSize(418)); |
| } |
| |
| } // namespace blink |