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// Copyright 2015 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/TreeScopeStyleSheetCollection.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/StyleSheetContents.h"
#include "core/css/parser/CSSParserMode.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace blink {
class TreeScopeStyleSheetCollectionTest : public testing::Test {
protected:
using SheetVector = WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet>>;
using ContentsVector = WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents>>;
enum UpdateType {
Reconstruct = TreeScopeStyleSheetCollection::Reconstruct,
Reset = TreeScopeStyleSheetCollection::Reset,
Additive = TreeScopeStyleSheetCollection::Additive
};
static PassRefPtrWillBeRawPtr<CSSStyleSheet> createSheet()
{
return CSSStyleSheet::create(StyleSheetContents::create(CSSParserContext(HTMLStandardMode, nullptr)));
}
static void compareStyleSheets(const SheetVector& oldStyleSheets, const SheetVector& newStyleSheets, const ContentsVector& expAddedSheets, UpdateType testUpdateType)
{
ContentsVector addedSheets;
UpdateType updateType = static_cast<UpdateType>(TreeScopeStyleSheetCollection::compareStyleSheets(oldStyleSheets, newStyleSheets, addedSheets));
EXPECT_EQ(testUpdateType, updateType);
EXPECT_EQ(expAddedSheets.size(), addedSheets.size());
if (expAddedSheets.size() == addedSheets.size()) {
for (unsigned i = 0; i < addedSheets.size(); i++)
EXPECT_EQ(expAddedSheets.at(i), addedSheets.at(i));
}
}
};
TEST_F(TreeScopeStyleSheetCollectionTest, CompareStyleSheetsAppend)
{
RefPtrWillBeRawPtr<CSSStyleSheet> sheet1 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet2 = createSheet();
ContentsVector added;
SheetVector previous;
SheetVector current;
previous.append(sheet1);
current.append(sheet1);
current.append(sheet2);
added.append(sheet2->contents());
compareStyleSheets(previous, current, added, Additive);
}
TEST_F(TreeScopeStyleSheetCollectionTest, CompareStyleSheetsPrepend)
{
RefPtrWillBeRawPtr<CSSStyleSheet> sheet1 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet2 = createSheet();
ContentsVector added;
SheetVector previous;
SheetVector current;
previous.append(sheet2);
current.append(sheet1);
current.append(sheet2);
added.append(sheet1->contents());
compareStyleSheets(previous, current, added, Reconstruct);
}
TEST_F(TreeScopeStyleSheetCollectionTest, CompareStyleSheetsInsert)
{
RefPtrWillBeRawPtr<CSSStyleSheet> sheet1 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet2 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet3 = createSheet();
ContentsVector added;
SheetVector previous;
SheetVector current;
previous.append(sheet1);
previous.append(sheet3);
current.append(sheet1);
current.append(sheet2);
current.append(sheet3);
added.append(sheet2->contents());
compareStyleSheets(previous, current, added, Reconstruct);
}
TEST_F(TreeScopeStyleSheetCollectionTest, CompareStyleSheetsRemove)
{
RefPtrWillBeRawPtr<CSSStyleSheet> sheet1 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet2 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet3 = createSheet();
ContentsVector added;
SheetVector previous;
SheetVector current;
previous.append(sheet1);
previous.append(sheet2);
previous.append(sheet3);
current.append(sheet1);
current.append(sheet3);
added.append(sheet2->contents());
// This is really the same as Insert. TreeScopeStyleSheetCollection::compareStyleSheets
// will assert if you pass an array that is longer as the first parameter.
compareStyleSheets(current, previous, added, Reconstruct);
}
TEST_F(TreeScopeStyleSheetCollectionTest, CompareStyleSheetsInsertRemove)
{
RefPtrWillBeRawPtr<CSSStyleSheet> sheet1 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet2 = createSheet();
RefPtrWillBeRawPtr<CSSStyleSheet> sheet3 = createSheet();
ContentsVector added;
SheetVector previous;
SheetVector current;
previous.append(sheet1);
previous.append(sheet2);
current.append(sheet2);
current.append(sheet3);
// TODO(rune@opera.com): This is clearly wrong. We add sheet3 and remove sheet1 and
// compareStyleSheets returns sheet2 and sheet3 as added (crbug/475858).
added.append(sheet2->contents());
added.append(sheet3->contents());
compareStyleSheets(previous, current, added, Reconstruct);
}
} // namespace blink
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