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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "core/css/resolver/ScopedStyleResolver.h" |
| 6 |
| 7 #include "core/dom/shadow/ShadowRoot.h" |
| 8 #include "core/dom/shadow/ShadowRootInit.h" |
| 9 #include "core/frame/FrameView.h" |
| 10 #include "core/html/HTMLElement.h" |
| 11 #include "core/testing/DummyPageHolder.h" |
| 12 #include "testing/gtest/include/gtest/gtest.h" |
| 13 |
| 14 namespace blink { |
| 15 |
| 16 class ScopedStyleResolverTest : public ::testing::Test { |
| 17 protected: |
| 18 void SetUp() override { |
| 19 m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600)); |
| 20 } |
| 21 |
| 22 Document& document() { return m_dummyPageHolder->document(); } |
| 23 StyleEngine& styleEngine() { return document().styleEngine(); } |
| 24 ShadowRoot& attachShadow(Element& host); |
| 25 |
| 26 private: |
| 27 std::unique_ptr<DummyPageHolder> m_dummyPageHolder; |
| 28 }; |
| 29 |
| 30 ShadowRoot& ScopedStyleResolverTest::attachShadow(Element& host) { |
| 31 ShadowRootInit init; |
| 32 init.setMode("open"); |
| 33 ShadowRoot* shadowRoot = host.attachShadow( |
| 34 ScriptState::forMainWorld(document().frame()), init, ASSERT_NO_EXCEPTION); |
| 35 EXPECT_TRUE(shadowRoot); |
| 36 return *shadowRoot; |
| 37 } |
| 38 |
| 39 TEST_F(ScopedStyleResolverTest, HasSameStylesNullNull) { |
| 40 EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(nullptr, nullptr)); |
| 41 } |
| 42 |
| 43 TEST_F(ScopedStyleResolverTest, HasSameStylesNullEmpty) { |
| 44 ScopedStyleResolver& resolver = document().ensureScopedStyleResolver(); |
| 45 EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(nullptr, &resolver)); |
| 46 EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(&resolver, nullptr)); |
| 47 } |
| 48 |
| 49 TEST_F(ScopedStyleResolverTest, HasSameStylesEmptyEmpty) { |
| 50 ScopedStyleResolver& resolver = document().ensureScopedStyleResolver(); |
| 51 EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(&resolver, &resolver)); |
| 52 } |
| 53 |
| 54 TEST_F(ScopedStyleResolverTest, HasSameStylesNonEmpty) { |
| 55 document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>"); |
| 56 Element* host1 = document().getElementById("host1"); |
| 57 Element* host2 = document().getElementById("host2"); |
| 58 ASSERT_TRUE(host1); |
| 59 ASSERT_TRUE(host2); |
| 60 ShadowRoot& root1 = attachShadow(*host1); |
| 61 ShadowRoot& root2 = attachShadow(*host2); |
| 62 root1.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>"); |
| 63 root2.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>"); |
| 64 document().view()->updateAllLifecyclePhases(); |
| 65 EXPECT_TRUE(ScopedStyleResolver::haveSameStyles( |
| 66 &root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver())); |
| 67 } |
| 68 |
| 69 TEST_F(ScopedStyleResolverTest, HasSameStylesDifferentSheetCount) { |
| 70 document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>"); |
| 71 Element* host1 = document().getElementById("host1"); |
| 72 Element* host2 = document().getElementById("host2"); |
| 73 ASSERT_TRUE(host1); |
| 74 ASSERT_TRUE(host2); |
| 75 ShadowRoot& root1 = attachShadow(*host1); |
| 76 ShadowRoot& root2 = attachShadow(*host2); |
| 77 root1.setInnerHTML( |
| 78 "<style>::slotted(#dummy){color:pink}</style><style>div{}</style>"); |
| 79 root2.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>"); |
| 80 document().view()->updateAllLifecyclePhases(); |
| 81 EXPECT_FALSE(ScopedStyleResolver::haveSameStyles( |
| 82 &root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver())); |
| 83 } |
| 84 |
| 85 TEST_F(ScopedStyleResolverTest, HasSameStylesCacheMiss) { |
| 86 document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>"); |
| 87 Element* host1 = document().getElementById("host1"); |
| 88 Element* host2 = document().getElementById("host2"); |
| 89 ASSERT_TRUE(host1); |
| 90 ASSERT_TRUE(host2); |
| 91 ShadowRoot& root1 = attachShadow(*host1); |
| 92 ShadowRoot& root2 = attachShadow(*host2); |
| 93 // Style equality is detected when StyleSheetContents is shared. That is only |
| 94 // the case when the source text is the same. The comparison will fail when |
| 95 // adding an extra space to one of the sheets. |
| 96 root1.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>"); |
| 97 root2.setInnerHTML("<style>::slotted(#dummy){ color:pink}</style>"); |
| 98 document().view()->updateAllLifecyclePhases(); |
| 99 EXPECT_FALSE(ScopedStyleResolver::haveSameStyles( |
| 100 &root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver())); |
| 101 } |
| 102 |
| 103 } // namespace blink |
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