Prepare for multiple !important author ranges.

Source/core/css/resolver/MatchResultTest.cpp

Index: Source/core/css/resolver/MatchResultTest.cpp
diff --git a/Source/core/css/resolver/MatchResultTest.cpp b/Source/core/css/resolver/MatchResultTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..021f5f6f49a6087f1029de4ecebf155314cfca3f
--- /dev/null
+++ b/Source/core/css/resolver/MatchResultTest.cpp
@@ -0,0 +1,173 @@
+// 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 "config.h"
+#include "core/css/resolver/MatchResult.h"
+
+#include "core/css/StylePropertySet.h"
+#include <gtest/gtest.h>
+
+namespace blink {
+
+class MatchResultTest : public ::testing::Test {
+protected:
+    void SetUp() override;
+
+    const StylePropertySet* propertySet(unsigned index) const
+    {
+        return propertySets[index].get();
+    }
+
+private:
+    WillBePersistentHeapVector<RefPtrWillBeMember<MutableStylePropertySet>, 6> propertySets;
+};
+
+void MatchResultTest::SetUp()
+{
+    for (unsigned i = 0; i < 6; i++)
+        propertySets.append(MutableStylePropertySet::create());
+}
+
+void testMatchedPropertiesRange(const MatchedPropertiesRange& range, int expectedLength, const StylePropertySet** expectedSets)
+{
+    EXPECT_EQ(expectedLength, range.end() - range.begin());
+    for (const auto& matchedProperties : range)
+        EXPECT_EQ(*expectedSets++, matchedProperties.properties);
+}
+
+TEST_F(MatchResultTest, UARules)
+{
+    const StylePropertySet* uaSets[] = { propertySet(0), propertySet(1) };
+
+    MatchResult result;
+    result.addMatchedProperties(uaSets[0]);
+    result.addMatchedProperties(uaSets[1]);
+    result.finishAddingUARules();
+
+    result.finishAddingAuthorRulesForTreeScope();
+
+    testMatchedPropertiesRange(result.allRules(), 2, uaSets);
+    testMatchedPropertiesRange(result.uaRules(), 2, uaSets);
+    testMatchedPropertiesRange(result.authorRules(), 0, nullptr);
+
+    ImportantAuthorRanges important(result);
+    EXPECT_EQ(important.end(), important.begin());
+}
+
+TEST_F(MatchResultTest, AuthorRules)
+{
+    const StylePropertySet* authorSets[] = { propertySet(0), propertySet(1) };
+
+    MatchResult result;
+
+    result.finishAddingUARules();
+    result.addMatchedProperties(authorSets[0]);
+    result.addMatchedProperties(authorSets[1]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    testMatchedPropertiesRange(result.allRules(), 2, authorSets);
+    testMatchedPropertiesRange(result.uaRules(), 0, nullptr);
+    testMatchedPropertiesRange(result.authorRules(), 2, authorSets);
+
+    ImportantAuthorRanges important(result);
+    EXPECT_EQ(important.end(), ++important.begin());
+}
+
+TEST_F(MatchResultTest, UAAndAuthorRules)
+{
+    const StylePropertySet* allSets[] = { propertySet(0), propertySet(1), propertySet(2), propertySet(3) };
+    const StylePropertySet** uaSets = &allSets[0];
+    const StylePropertySet** authorSets = &allSets[2];
+
+    MatchResult result;
+
+    result.addMatchedProperties(uaSets[0]);
+    result.addMatchedProperties(uaSets[1]);
+    result.finishAddingUARules();
+
+    result.addMatchedProperties(authorSets[0]);
+    result.addMatchedProperties(authorSets[1]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    testMatchedPropertiesRange(result.allRules(), 4, allSets);
+    testMatchedPropertiesRange(result.uaRules(), 2, uaSets);
+    testMatchedPropertiesRange(result.authorRules(), 2, authorSets);
+
+    ImportantAuthorRanges important(result);
+    EXPECT_EQ(important.end(), ++important.begin());
+}
+
+TEST_F(MatchResultTest, AuthorRulesMultipleScopes)
+{
+    const StylePropertySet* authorSets[] = { propertySet(0), propertySet(1), propertySet(2), propertySet(3) };
+
+    MatchResult result;
+
+    result.finishAddingUARules();
+
+    result.addMatchedProperties(authorSets[0]);
+    result.addMatchedProperties(authorSets[1]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    result.addMatchedProperties(authorSets[2]);
+    result.addMatchedProperties(authorSets[3]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    testMatchedPropertiesRange(result.allRules(), 4, authorSets);
+    testMatchedPropertiesRange(result.uaRules(), 0, nullptr);
+    testMatchedPropertiesRange(result.authorRules(), 4, authorSets);
+
+    ImportantAuthorRanges important(result);
+
+    auto iter = important.begin();
+    EXPECT_NE(important.end(), iter);
+    testMatchedPropertiesRange(*iter, 2, &authorSets[2]);
+
+    ++iter;
+    EXPECT_NE(important.end(), iter);
+    testMatchedPropertiesRange(*iter, 2, authorSets);
+
+    ++iter;
+    EXPECT_EQ(important.end(), iter);
+}
+
+TEST_F(MatchResultTest, UARulesAndAuthorRulesMultipleScopes)
+{
+    const StylePropertySet* allSets[] = { propertySet(0), propertySet(1), propertySet(2), propertySet(3), propertySet(4), propertySet(5) };
+    const StylePropertySet** uaSets = &allSets[0];
+    const StylePropertySet** authorSets = &allSets[2];
+
+    MatchResult result;
+
+    result.addMatchedProperties(uaSets[0]);
+    result.addMatchedProperties(uaSets[1]);
+    result.finishAddingUARules();
+
+    result.addMatchedProperties(authorSets[0]);
+    result.addMatchedProperties(authorSets[1]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    result.addMatchedProperties(authorSets[2]);
+    result.addMatchedProperties(authorSets[3]);
+    result.finishAddingAuthorRulesForTreeScope();
+
+    testMatchedPropertiesRange(result.allRules(), 6, allSets);
+    testMatchedPropertiesRange(result.uaRules(), 2, uaSets);
+    testMatchedPropertiesRange(result.authorRules(), 4, authorSets);
+
+    ImportantAuthorRanges important(result);
+
+    ImportantAuthorRangeIterator iter = important.begin();
+    EXPECT_NE(important.end(), iter);
+    testMatchedPropertiesRange(*iter, 2, &authorSets[2]);
+
+    ++iter;
+    EXPECT_NE(important.end(), iter);
+    testMatchedPropertiesRange(*iter, 2, authorSets);
+
+    ++iter;
+    EXPECT_EQ(important.end(), iter);
+}
+
+} // namespace blink