| // 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/dom/StyleEngine.h" |
| |
| #include "core/css/StyleSheetContents.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/NodeComputedStyle.h" |
| #include "core/frame/FrameView.h" |
| #include "core/html/HTMLElement.h" |
| #include "core/html/HTMLStyleElement.h" |
| #include "core/testing/DummyPageHolder.h" |
| #include "platform/heap/Heap.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| class StyleEngineTest : public ::testing::Test { |
| protected: |
| void SetUp() override; |
| |
| Document& document() { return m_dummyPageHolder->document(); } |
| StyleEngine& styleEngine() { return document().styleEngine(); } |
| |
| bool isDocumentStyleSheetCollectionClean() { return !styleEngine().shouldUpdateDocumentStyleSheetCollection(AnalyzedStyleUpdate); } |
| |
| private: |
| std::unique_ptr<DummyPageHolder> m_dummyPageHolder; |
| }; |
| |
| void StyleEngineTest::SetUp() |
| { |
| m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600)); |
| } |
| |
| TEST_F(StyleEngineTest, DocumentDirtyAfterInject) |
| { |
| StyleSheetContents* parsedSheet = StyleSheetContents::create(CSSParserContext(document(), nullptr)); |
| parsedSheet->parseString("div {}"); |
| styleEngine().injectAuthorSheet(parsedSheet); |
| document().view()->updateAllLifecyclePhases(); |
| |
| EXPECT_TRUE(isDocumentStyleSheetCollectionClean()); |
| } |
| |
| TEST_F(StyleEngineTest, AnalyzedInject) |
| { |
| document().body()->setInnerHTML("<style>div { color: red }</style><div id='t1'>Green</div><div></div>", ASSERT_NO_EXCEPTION); |
| document().view()->updateAllLifecyclePhases(); |
| |
| Element* t1 = document().getElementById("t1"); |
| ASSERT_TRUE(t1); |
| ASSERT_TRUE(t1->computedStyle()); |
| EXPECT_EQ(makeRGB(255, 0, 0), t1->computedStyle()->visitedDependentColor(CSSPropertyColor)); |
| |
| unsigned beforeCount = styleEngine().styleForElementCount(); |
| |
| StyleSheetContents* parsedSheet = StyleSheetContents::create(CSSParserContext(document(), nullptr)); |
| parsedSheet->parseString("#t1 { color: green }"); |
| styleEngine().injectAuthorSheet(parsedSheet); |
| document().view()->updateAllLifecyclePhases(); |
| |
| unsigned afterCount = styleEngine().styleForElementCount(); |
| EXPECT_EQ(1u, afterCount - beforeCount); |
| |
| ASSERT_TRUE(t1->computedStyle()); |
| EXPECT_EQ(makeRGB(0, 128, 0), t1->computedStyle()->visitedDependentColor(CSSPropertyColor)); |
| } |
| |
| TEST_F(StyleEngineTest, TextToSheetCache) |
| { |
| HTMLStyleElement* element = HTMLStyleElement::create(document(), false); |
| |
| String sheetText("div {}"); |
| TextPosition minPos = TextPosition::minimumPosition(); |
| StyleEngineContext context; |
| |
| CSSStyleSheet* sheet1 = styleEngine().createSheet(*element, sheetText, minPos, context); |
| |
| // Check that the first sheet is not using a cached StyleSheetContents. |
| EXPECT_FALSE(sheet1->contents()->isUsedFromTextCache()); |
| |
| CSSStyleSheet* sheet2 = styleEngine().createSheet(*element, sheetText, minPos, context); |
| |
| // Check that the second sheet uses the cached StyleSheetContents for the first. |
| EXPECT_EQ(sheet1->contents(), sheet2->contents()); |
| EXPECT_TRUE(sheet2->contents()->isUsedFromTextCache()); |
| |
| sheet1 = nullptr; |
| sheet2 = nullptr; |
| element = nullptr; |
| |
| // Garbage collection should clear the weak reference in the StyleSheetContents cache. |
| ThreadState::current()-> collectAllGarbage(); |
| |
| element = HTMLStyleElement::create(document(), false); |
| sheet1 = styleEngine().createSheet(*element, sheetText, minPos, context); |
| |
| // Check that we did not use a cached StyleSheetContents after the garbage collection. |
| EXPECT_FALSE(sheet1->contents()->isUsedFromTextCache()); |
| } |
| |
| } // namespace blink |