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// Copyright 2017 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/resolver/ScopedStyleResolver.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/dom/shadow/ShadowRootInit.h"
#include "core/frame/FrameView.h"
#include "core/html/HTMLElement.h"
#include "core/testing/DummyPageHolder.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink {
class ScopedStyleResolverTest : public ::testing::Test {
protected:
void SetUp() override {
m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
}
Document& document() { return m_dummyPageHolder->document(); }
StyleEngine& styleEngine() { return document().styleEngine(); }
ShadowRoot& attachShadow(Element& host);
private:
std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
};
ShadowRoot& ScopedStyleResolverTest::attachShadow(Element& host) {
ShadowRootInit init;
init.setMode("open");
ShadowRoot* shadowRoot = host.attachShadow(
ScriptState::forMainWorld(document().frame()), init, ASSERT_NO_EXCEPTION);
EXPECT_TRUE(shadowRoot);
return *shadowRoot;
}
TEST_F(ScopedStyleResolverTest, HasSameStylesNullNull) {
EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(nullptr, nullptr));
}
TEST_F(ScopedStyleResolverTest, HasSameStylesNullEmpty) {
ScopedStyleResolver& resolver = document().ensureScopedStyleResolver();
EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(nullptr, &resolver));
EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(&resolver, nullptr));
}
TEST_F(ScopedStyleResolverTest, HasSameStylesEmptyEmpty) {
ScopedStyleResolver& resolver = document().ensureScopedStyleResolver();
EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(&resolver, &resolver));
}
TEST_F(ScopedStyleResolverTest, HasSameStylesNonEmpty) {
document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>");
Element* host1 = document().getElementById("host1");
Element* host2 = document().getElementById("host2");
ASSERT_TRUE(host1);
ASSERT_TRUE(host2);
ShadowRoot& root1 = attachShadow(*host1);
ShadowRoot& root2 = attachShadow(*host2);
root1.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>");
root2.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>");
document().view()->updateAllLifecyclePhases();
EXPECT_TRUE(ScopedStyleResolver::haveSameStyles(
&root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver()));
}
TEST_F(ScopedStyleResolverTest, HasSameStylesDifferentSheetCount) {
document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>");
Element* host1 = document().getElementById("host1");
Element* host2 = document().getElementById("host2");
ASSERT_TRUE(host1);
ASSERT_TRUE(host2);
ShadowRoot& root1 = attachShadow(*host1);
ShadowRoot& root2 = attachShadow(*host2);
root1.setInnerHTML(
"<style>::slotted(#dummy){color:pink}</style><style>div{}</style>");
root2.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>");
document().view()->updateAllLifecyclePhases();
EXPECT_FALSE(ScopedStyleResolver::haveSameStyles(
&root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver()));
}
TEST_F(ScopedStyleResolverTest, HasSameStylesCacheMiss) {
document().body()->setInnerHTML("<div id=host1></div><div id=host2></div>");
Element* host1 = document().getElementById("host1");
Element* host2 = document().getElementById("host2");
ASSERT_TRUE(host1);
ASSERT_TRUE(host2);
ShadowRoot& root1 = attachShadow(*host1);
ShadowRoot& root2 = attachShadow(*host2);
// Style equality is detected when StyleSheetContents is shared. That is only
// the case when the source text is the same. The comparison will fail when
// adding an extra space to one of the sheets.
root1.setInnerHTML("<style>::slotted(#dummy){color:pink}</style>");
root2.setInnerHTML("<style>::slotted(#dummy){ color:pink}</style>");
document().view()->updateAllLifecyclePhases();
EXPECT_FALSE(ScopedStyleResolver::haveSameStyles(
&root1.ensureScopedStyleResolver(), &root2.ensureScopedStyleResolver()));
}
} // namespace blink
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