Tools/TestWebKitAPI/Tests/WTF/HashCountedSet.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2016-2017 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "config.h"

 #include "Counters.h"
 #include "MoveOnly.h"
 #include "RefLogger.h"
 #include <string>
 #include <wtf/HashCountedSet.h>
 #include <wtf/text/StringHash.h>

 namespace TestWebKitAPI {

 typedef WTF::HashCountedSet<int> IntHashCountedSet;

 TEST(WTF_HashCountedSet, HashTableIteratorComparison)
 {
     IntHashCountedSet hashCountedSet;
     hashCountedSet.add(1);
     ASSERT_TRUE(hashCountedSet.begin() != hashCountedSet.end());
     ASSERT_FALSE(hashCountedSet.begin() == hashCountedSet.end());

     IntHashCountedSet::const_iterator begin = hashCountedSet.begin();
     ASSERT_TRUE(begin == hashCountedSet.begin());
     ASSERT_TRUE(hashCountedSet.begin() == begin);
     ASSERT_TRUE(begin != hashCountedSet.end());
     ASSERT_TRUE(hashCountedSet.end() != begin);
     ASSERT_FALSE(begin != hashCountedSet.begin());
     ASSERT_FALSE(hashCountedSet.begin() != begin);
     ASSERT_FALSE(begin == hashCountedSet.end());
     ASSERT_FALSE(hashCountedSet.end() == begin);
 }

 struct TestDoubleHashTraits : HashTraits<double> {
     static const int minimumTableSize = 8;
 };

 typedef HashCountedSet<double, DefaultHash<double>, TestDoubleHashTraits> DoubleHashCountedSet;

 static int bucketForKey(double key)
 {
     return DefaultHash<double>::hash(key) & (TestDoubleHashTraits::minimumTableSize - 1);
 }

 TEST(WTF_HashCountedSet, DoubleHashCollisions)
 {
     // The "clobber" key here is one that ends up stealing the bucket that the -0 key
     // originally wants to be in. This makes the 0 and -0 keys collide and the test then
     // fails unless the FloatHash::equals() implementation can distinguish them.
     const double clobberKey = 6;
     const double zeroKey = 0;
     const double negativeZeroKey = -zeroKey;

     DoubleHashCountedSet hashCountedSet;

     hashCountedSet.add(clobberKey);

     ASSERT_EQ(hashCountedSet.count(clobberKey), 1u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 0u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

     hashCountedSet.add(zeroKey);
     hashCountedSet.add(negativeZeroKey);

     ASSERT_EQ(bucketForKey(clobberKey), bucketForKey(negativeZeroKey));
     ASSERT_EQ(hashCountedSet.count(clobberKey), 1u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 1u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 1u);

     hashCountedSet.add(clobberKey);
     hashCountedSet.add(zeroKey);
     hashCountedSet.add(negativeZeroKey);

     ASSERT_EQ(hashCountedSet.count(clobberKey), 2u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 2u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 2u);

     hashCountedSet.add(clobberKey, 12);
     hashCountedSet.add(zeroKey, 15);
     hashCountedSet.add(negativeZeroKey, 17);

     ASSERT_EQ(hashCountedSet.count(clobberKey), 14u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 17u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 19u);
 }

 TEST(WTF_HashCountedSet, DoubleHashCollisionsInitialCount)
 {
     // The "clobber" key here is one that ends up stealing the bucket that the -0 key
     // originally wants to be in. This makes the 0 and -0 keys collide and the test then
     // fails unless the FloatHash::equals() implementation can distinguish them.
     const double clobberKey = 6;
     const double zeroKey = 0;
     const double negativeZeroKey = -zeroKey;

     DoubleHashCountedSet hashCountedSet;

     hashCountedSet.add(clobberKey, 5);

     ASSERT_EQ(hashCountedSet.count(clobberKey), 5u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 0u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

     hashCountedSet.add(zeroKey, 22);
     hashCountedSet.add(negativeZeroKey, 0);

     ASSERT_EQ(bucketForKey(clobberKey), bucketForKey(negativeZeroKey));
     ASSERT_EQ(hashCountedSet.count(clobberKey), 5u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 22u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

     hashCountedSet.add(clobberKey);
     hashCountedSet.add(zeroKey);
     hashCountedSet.add(negativeZeroKey);

     ASSERT_EQ(hashCountedSet.count(clobberKey), 6u);
     ASSERT_EQ(hashCountedSet.count(zeroKey), 23u);
     ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 1u);
 }


 TEST(WTF_HashCountedSet, MoveOnlyKeys)
 {
     HashCountedSet<MoveOnly> moveOnlyKeys;

     for (size_t i = 0; i < 100; ++i) {
         MoveOnly moveOnly(i + 1);
         moveOnlyKeys.add(WTFMove(moveOnly));
     }

     for (size_t i = 0; i < 100; ++i) {
         auto it = moveOnlyKeys.find(MoveOnly(i + 1));
         ASSERT_FALSE(it == moveOnlyKeys.end());
         ASSERT_EQ(it->value, 1u);
     }

     for (size_t i = 0; i < 100; ++i)
         ASSERT_FALSE(moveOnlyKeys.add(MoveOnly(i + 1)).isNewEntry);

     for (size_t i = 0; i < 100; ++i)
         ASSERT_FALSE(moveOnlyKeys.remove(MoveOnly(i + 1)));

     for (size_t i = 0; i < 100; ++i)
         ASSERT_TRUE(moveOnlyKeys.remove(MoveOnly(i + 1)));

     ASSERT_TRUE(moveOnlyKeys.isEmpty());
 }

 TEST(WTF_HashCountedSet, MoveOnlyKeysInitialCount)
 {
     HashCountedSet<MoveOnly> moveOnlyKeys;

     for (size_t i = 0; i < 100; ++i) {
         MoveOnly moveOnly(i + 1);
         moveOnlyKeys.add(WTFMove(moveOnly), i + 1);
     }

     for (size_t i = 0; i < 100; ++i) {
         auto it = moveOnlyKeys.find(MoveOnly(i + 1));
         ASSERT_FALSE(it == moveOnlyKeys.end());
         ASSERT_EQ(it->value, i + 1);
     }

     for (size_t i = 0; i < 100; ++i)
         ASSERT_FALSE(moveOnlyKeys.add(MoveOnly(i + 1)).isNewEntry);

     for (size_t i = 0; i < 100; ++i)
         ASSERT_EQ(moveOnlyKeys.count(MoveOnly(i + 1)), i + 2);

     for (size_t i = 0; i < 100; ++i)
         ASSERT_FALSE(moveOnlyKeys.remove(MoveOnly(i + 1)));

     for (size_t i = 0; i < 100; ++i)
         ASSERT_EQ(moveOnlyKeys.count(MoveOnly(i + 1)), i + 1);
 }

 TEST(WTF_HashCountedSet, InitializerList)
 {
     HashCountedSet<String> hashCountedSet = {
         "one",
         "two",
         "three",
         "four",
         "four",
         "four",
         "four",
     };

     EXPECT_EQ(4u, hashCountedSet.size());

     EXPECT_EQ(hashCountedSet.count("one"), 1u);
     EXPECT_EQ(hashCountedSet.count("two"), 1u);
     EXPECT_EQ(hashCountedSet.count("three"), 1u);
     EXPECT_EQ(hashCountedSet.count("four"), 4u);
 }

 TEST(WTF_HashCountedSet, InitializerListInitialCount)
 {
     HashCountedSet<String> hashCountedSet = {
         { String("one"), 1u },
         { String("two"), 2u },
         { String("three"), 3u },
         { String("four"), 4u },
     };

     EXPECT_EQ(4u, hashCountedSet.size());

     EXPECT_EQ(hashCountedSet.count("one"), 1u);
     EXPECT_EQ(hashCountedSet.count("two"), 2u);
     EXPECT_EQ(hashCountedSet.count("three"), 3u);
     EXPECT_EQ(hashCountedSet.count("four"), 4u);
 }

 TEST(WTF_HashCountedSet, UniquePtrKey)
 {
     ConstructorDestructorCounter::TestingScope scope;

     HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

     auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
     hashCountedSet.add(WTFMove(uniquePtr));

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

     hashCountedSet.clear();

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
 }

 TEST(WTF_HashCountedSet, UniquePtrKeyInitialCount)
 {
     ConstructorDestructorCounter::TestingScope scope;

     HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

     auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
     hashCountedSet.add(WTFMove(uniquePtr), 12);

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

     hashCountedSet.clear();

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
 }

 TEST(WTF_HashCountedSet, UniquePtrKey_CustomDeleter)
 {
     ConstructorDestructorCounter::TestingScope constructorDestructorCounterScope;
     DeleterCounter<ConstructorDestructorCounter>::TestingScope deleterCounterScope;

     HashCountedSet<std::unique_ptr<ConstructorDestructorCounter, DeleterCounter<ConstructorDestructorCounter>>> hashCountedSet;

     std::unique_ptr<ConstructorDestructorCounter, DeleterCounter<ConstructorDestructorCounter>> uniquePtr(new ConstructorDestructorCounter(), DeleterCounter<ConstructorDestructorCounter>());
     hashCountedSet.add(WTFMove(uniquePtr));

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

     EXPECT_EQ(0u, DeleterCounter<ConstructorDestructorCounter>::deleterCount());

     hashCountedSet.clear();

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);

     EXPECT_EQ(1u, DeleterCounter<ConstructorDestructorCounter>::deleterCount());
 }

 TEST(WTF_HashCountedSet, UniquePtrKey_FindUsingRawPointer)
 {
     HashCountedSet<std::unique_ptr<int>> hashCountedSet;

     auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
     int* ptr = uniquePtr.get();
     hashCountedSet.add(WTFMove(uniquePtr));

     auto it = hashCountedSet.find(ptr);
     ASSERT_TRUE(it != hashCountedSet.end());
     EXPECT_EQ(ptr, it->key.get());
     EXPECT_EQ(1u, it->value);
 }

 TEST(WTF_HashCountedSet, UniquePtrKey_ContainsUsingRawPointer)
 {
     HashCountedSet<std::unique_ptr<int>> hashCountedSet;

     auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
     int* ptr = uniquePtr.get();
     hashCountedSet.add(WTFMove(uniquePtr));

     EXPECT_EQ(true, hashCountedSet.contains(ptr));
 }

 TEST(WTF_HashCountedSet, UniquePtrKey_GetUsingRawPointer)
 {
     HashCountedSet<std::unique_ptr<int>> hashCountedSet;

     auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
     int* ptr = uniquePtr.get();
     hashCountedSet.add(WTFMove(uniquePtr));

     int value = hashCountedSet.count(ptr);
     EXPECT_EQ(1, value);
 }

 TEST(WTF_HashCountedSet, UniquePtrKey_RemoveUsingRawPointer)
 {
     ConstructorDestructorCounter::TestingScope scope;

     HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

     auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
     ConstructorDestructorCounter* ptr = uniquePtr.get();
     hashCountedSet.add(WTFMove(uniquePtr));

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

     bool result = hashCountedSet.remove(ptr);
     EXPECT_EQ(true, result);

     EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
     EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
 }

 TEST(WTF_HashCountedSet, RefPtrKey_Add)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         RefPtr<RefLogger> ptr(&a);
         hashCountedSet.add(ptr);

         ASSERT_STREQ("ref(a) ref(a) ", takeLogStr().c_str());
         EXPECT_EQ(1U, hashCountedSet.count(ptr));
         EXPECT_EQ(1U, hashCountedSet.count(ptr.get()));
     }

     EXPECT_STREQ("deref(a) deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddUsingRelease)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         RefPtr<RefLogger> ptr(&a);
         hashCountedSet.add(WTFMove(ptr));
     }

     EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddUsingMove)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         RefPtr<RefLogger> ptr(&a);
         hashCountedSet.add(WTFMove(ptr));
     }

     EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddUsingRaw)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         RefPtr<RefLogger> ptr(&a);
         hashCountedSet.add(ptr.get());

         EXPECT_STREQ("ref(a) ref(a) ", takeLogStr().c_str());
         EXPECT_EQ(1U, hashCountedSet.count(ptr));
         EXPECT_EQ(1U, hashCountedSet.count(ptr.get()));
     }

     EXPECT_STREQ("deref(a) deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddKeyAlreadyPresent)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         {
             RefPtr<RefLogger> ptr(&a);
             hashCountedSet.add(ptr);
         }

         EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

         {
             RefPtr<RefLogger> ptr2(&a);
             auto addResult = hashCountedSet.add(ptr2);
             EXPECT_FALSE(addResult.isNewEntry);
         }

         EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
     }

     EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddUsingReleaseKeyAlreadyPresent)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         {
             RefPtr<RefLogger> ptr(&a);
             hashCountedSet.add(ptr);
         }

         EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

         {
             RefPtr<RefLogger> ptr2(&a);
             auto addResult = hashCountedSet.add(WTFMove(ptr2));
             EXPECT_FALSE(addResult.isNewEntry);
         }

         EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
     }

     EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, RefPtrKey_AddUsingMoveKeyAlreadyPresent)
 {
     {
         DerivedRefLogger a("a");

         HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

         {
             RefPtr<RefLogger> ptr(&a);
             hashCountedSet.add(ptr);
         }

         EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

         {
             RefPtr<RefLogger> ptr2(&a);
             auto addResult = hashCountedSet.add(WTFMove(ptr2));
             EXPECT_FALSE(addResult.isNewEntry);
         }

         EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
     }

     EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
 }

 TEST(WTF_HashCountedSet, Values)
 {
     HashCountedSet<int> set { 1, 1, 2, 3, 3 };

     auto vector = copyToVector(set.values());
     EXPECT_EQ(3U, vector.size());

     std::sort(vector.begin(), vector.end());
     EXPECT_EQ(1, vector[0]);
     EXPECT_EQ(2, vector[1]);
     EXPECT_EQ(3, vector[2]);
 }

 } // namespace TestWebKitAPI
	/*
	* Copyright (C) 2011 Google Inc. All rights reserved.
	* Copyright (C) 2016-2017 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "config.h"

	#include "Counters.h"
	#include "MoveOnly.h"
	#include "RefLogger.h"
	#include <string>
	#include <wtf/HashCountedSet.h>
	#include <wtf/text/StringHash.h>

	namespace TestWebKitAPI {

	typedef WTF::HashCountedSet<int> IntHashCountedSet;

	TEST(WTF_HashCountedSet, HashTableIteratorComparison)
	{
	IntHashCountedSet hashCountedSet;
	hashCountedSet.add(1);
	ASSERT_TRUE(hashCountedSet.begin() != hashCountedSet.end());
	ASSERT_FALSE(hashCountedSet.begin() == hashCountedSet.end());

	IntHashCountedSet::const_iterator begin = hashCountedSet.begin();
	ASSERT_TRUE(begin == hashCountedSet.begin());
	ASSERT_TRUE(hashCountedSet.begin() == begin);
	ASSERT_TRUE(begin != hashCountedSet.end());
	ASSERT_TRUE(hashCountedSet.end() != begin);
	ASSERT_FALSE(begin != hashCountedSet.begin());
	ASSERT_FALSE(hashCountedSet.begin() != begin);
	ASSERT_FALSE(begin == hashCountedSet.end());
	ASSERT_FALSE(hashCountedSet.end() == begin);
	}

	struct TestDoubleHashTraits : HashTraits<double> {
	static const int minimumTableSize = 8;
	};

	typedef HashCountedSet<double, DefaultHash<double>, TestDoubleHashTraits> DoubleHashCountedSet;

	static int bucketForKey(double key)
	{
	return DefaultHash<double>::hash(key) & (TestDoubleHashTraits::minimumTableSize - 1);
	}

	TEST(WTF_HashCountedSet, DoubleHashCollisions)
	{
	// The "clobber" key here is one that ends up stealing the bucket that the -0 key
	// originally wants to be in. This makes the 0 and -0 keys collide and the test then
	// fails unless the FloatHash::equals() implementation can distinguish them.
	const double clobberKey = 6;
	const double zeroKey = 0;
	const double negativeZeroKey = -zeroKey;

	DoubleHashCountedSet hashCountedSet;

	hashCountedSet.add(clobberKey);

	ASSERT_EQ(hashCountedSet.count(clobberKey), 1u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 0u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

	hashCountedSet.add(zeroKey);
	hashCountedSet.add(negativeZeroKey);

	ASSERT_EQ(bucketForKey(clobberKey), bucketForKey(negativeZeroKey));
	ASSERT_EQ(hashCountedSet.count(clobberKey), 1u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 1u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 1u);

	hashCountedSet.add(clobberKey);
	hashCountedSet.add(zeroKey);
	hashCountedSet.add(negativeZeroKey);

	ASSERT_EQ(hashCountedSet.count(clobberKey), 2u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 2u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 2u);

	hashCountedSet.add(clobberKey, 12);
	hashCountedSet.add(zeroKey, 15);
	hashCountedSet.add(negativeZeroKey, 17);

	ASSERT_EQ(hashCountedSet.count(clobberKey), 14u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 17u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 19u);
	}

	TEST(WTF_HashCountedSet, DoubleHashCollisionsInitialCount)
	{
	// The "clobber" key here is one that ends up stealing the bucket that the -0 key
	// originally wants to be in. This makes the 0 and -0 keys collide and the test then
	// fails unless the FloatHash::equals() implementation can distinguish them.
	const double clobberKey = 6;
	const double zeroKey = 0;
	const double negativeZeroKey = -zeroKey;

	DoubleHashCountedSet hashCountedSet;

	hashCountedSet.add(clobberKey, 5);

	ASSERT_EQ(hashCountedSet.count(clobberKey), 5u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 0u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

	hashCountedSet.add(zeroKey, 22);
	hashCountedSet.add(negativeZeroKey, 0);

	ASSERT_EQ(bucketForKey(clobberKey), bucketForKey(negativeZeroKey));
	ASSERT_EQ(hashCountedSet.count(clobberKey), 5u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 22u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 0u);

	hashCountedSet.add(clobberKey);
	hashCountedSet.add(zeroKey);
	hashCountedSet.add(negativeZeroKey);

	ASSERT_EQ(hashCountedSet.count(clobberKey), 6u);
	ASSERT_EQ(hashCountedSet.count(zeroKey), 23u);
	ASSERT_EQ(hashCountedSet.count(negativeZeroKey), 1u);
	}


	TEST(WTF_HashCountedSet, MoveOnlyKeys)
	{
	HashCountedSet<MoveOnly> moveOnlyKeys;

	for (size_t i = 0; i < 100; ++i) {
	MoveOnly moveOnly(i + 1);
	moveOnlyKeys.add(WTFMove(moveOnly));
	}

	for (size_t i = 0; i < 100; ++i) {
	auto it = moveOnlyKeys.find(MoveOnly(i + 1));
	ASSERT_FALSE(it == moveOnlyKeys.end());
	ASSERT_EQ(it->value, 1u);
	}

	for (size_t i = 0; i < 100; ++i)
	ASSERT_FALSE(moveOnlyKeys.add(MoveOnly(i + 1)).isNewEntry);

	for (size_t i = 0; i < 100; ++i)
	ASSERT_FALSE(moveOnlyKeys.remove(MoveOnly(i + 1)));

	for (size_t i = 0; i < 100; ++i)
	ASSERT_TRUE(moveOnlyKeys.remove(MoveOnly(i + 1)));

	ASSERT_TRUE(moveOnlyKeys.isEmpty());
	}

	TEST(WTF_HashCountedSet, MoveOnlyKeysInitialCount)
	{
	HashCountedSet<MoveOnly> moveOnlyKeys;

	for (size_t i = 0; i < 100; ++i) {
	MoveOnly moveOnly(i + 1);
	moveOnlyKeys.add(WTFMove(moveOnly), i + 1);
	}

	for (size_t i = 0; i < 100; ++i) {
	auto it = moveOnlyKeys.find(MoveOnly(i + 1));
	ASSERT_FALSE(it == moveOnlyKeys.end());
	ASSERT_EQ(it->value, i + 1);
	}

	for (size_t i = 0; i < 100; ++i)
	ASSERT_FALSE(moveOnlyKeys.add(MoveOnly(i + 1)).isNewEntry);

	for (size_t i = 0; i < 100; ++i)
	ASSERT_EQ(moveOnlyKeys.count(MoveOnly(i + 1)), i + 2);

	for (size_t i = 0; i < 100; ++i)
	ASSERT_FALSE(moveOnlyKeys.remove(MoveOnly(i + 1)));

	for (size_t i = 0; i < 100; ++i)
	ASSERT_EQ(moveOnlyKeys.count(MoveOnly(i + 1)), i + 1);
	}

	TEST(WTF_HashCountedSet, InitializerList)
	{
	HashCountedSet<String> hashCountedSet = {
	"one",
	"two",
	"three",
	"four",
	"four",
	"four",
	"four",
	};

	EXPECT_EQ(4u, hashCountedSet.size());

	EXPECT_EQ(hashCountedSet.count("one"), 1u);
	EXPECT_EQ(hashCountedSet.count("two"), 1u);
	EXPECT_EQ(hashCountedSet.count("three"), 1u);
	EXPECT_EQ(hashCountedSet.count("four"), 4u);
	}

	TEST(WTF_HashCountedSet, InitializerListInitialCount)
	{
	HashCountedSet<String> hashCountedSet = {
	{ String("one"), 1u },
	{ String("two"), 2u },
	{ String("three"), 3u },
	{ String("four"), 4u },
	};

	EXPECT_EQ(4u, hashCountedSet.size());

	EXPECT_EQ(hashCountedSet.count("one"), 1u);
	EXPECT_EQ(hashCountedSet.count("two"), 2u);
	EXPECT_EQ(hashCountedSet.count("three"), 3u);
	EXPECT_EQ(hashCountedSet.count("four"), 4u);
	}

	TEST(WTF_HashCountedSet, UniquePtrKey)
	{
	ConstructorDestructorCounter::TestingScope scope;

	HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

	auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
	hashCountedSet.add(WTFMove(uniquePtr));

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

	hashCountedSet.clear();

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
	}

	TEST(WTF_HashCountedSet, UniquePtrKeyInitialCount)
	{
	ConstructorDestructorCounter::TestingScope scope;

	HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

	auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
	hashCountedSet.add(WTFMove(uniquePtr), 12);

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

	hashCountedSet.clear();

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
	}

	TEST(WTF_HashCountedSet, UniquePtrKey_CustomDeleter)
	{
	ConstructorDestructorCounter::TestingScope constructorDestructorCounterScope;
	DeleterCounter<ConstructorDestructorCounter>::TestingScope deleterCounterScope;

	HashCountedSet<std::unique_ptr<ConstructorDestructorCounter, DeleterCounter<ConstructorDestructorCounter>>> hashCountedSet;

	std::unique_ptr<ConstructorDestructorCounter, DeleterCounter<ConstructorDestructorCounter>> uniquePtr(new ConstructorDestructorCounter(), DeleterCounter<ConstructorDestructorCounter>());
	hashCountedSet.add(WTFMove(uniquePtr));

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

	EXPECT_EQ(0u, DeleterCounter<ConstructorDestructorCounter>::deleterCount());

	hashCountedSet.clear();

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);

	EXPECT_EQ(1u, DeleterCounter<ConstructorDestructorCounter>::deleterCount());
	}

	TEST(WTF_HashCountedSet, UniquePtrKey_FindUsingRawPointer)
	{
	HashCountedSet<std::unique_ptr<int>> hashCountedSet;

	auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
	int* ptr = uniquePtr.get();
	hashCountedSet.add(WTFMove(uniquePtr));

	auto it = hashCountedSet.find(ptr);
	ASSERT_TRUE(it != hashCountedSet.end());
	EXPECT_EQ(ptr, it->key.get());
	EXPECT_EQ(1u, it->value);
	}

	TEST(WTF_HashCountedSet, UniquePtrKey_ContainsUsingRawPointer)
	{
	HashCountedSet<std::unique_ptr<int>> hashCountedSet;

	auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
	int* ptr = uniquePtr.get();
	hashCountedSet.add(WTFMove(uniquePtr));

	EXPECT_EQ(true, hashCountedSet.contains(ptr));
	}

	TEST(WTF_HashCountedSet, UniquePtrKey_GetUsingRawPointer)
	{
	HashCountedSet<std::unique_ptr<int>> hashCountedSet;

	auto uniquePtr = makeUniqueWithoutFastMallocCheck<int>(5);
	int* ptr = uniquePtr.get();
	hashCountedSet.add(WTFMove(uniquePtr));

	int value = hashCountedSet.count(ptr);
	EXPECT_EQ(1, value);
	}

	TEST(WTF_HashCountedSet, UniquePtrKey_RemoveUsingRawPointer)
	{
	ConstructorDestructorCounter::TestingScope scope;

	HashCountedSet<std::unique_ptr<ConstructorDestructorCounter>> hashCountedSet;

	auto uniquePtr = makeUnique<ConstructorDestructorCounter>();
	ConstructorDestructorCounter* ptr = uniquePtr.get();
	hashCountedSet.add(WTFMove(uniquePtr));

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(0u, ConstructorDestructorCounter::destructionCount);

	bool result = hashCountedSet.remove(ptr);
	EXPECT_EQ(true, result);

	EXPECT_EQ(1u, ConstructorDestructorCounter::constructionCount);
	EXPECT_EQ(1u, ConstructorDestructorCounter::destructionCount);
	}

	TEST(WTF_HashCountedSet, RefPtrKey_Add)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(ptr);

	ASSERT_STREQ("ref(a) ref(a) ", takeLogStr().c_str());
	EXPECT_EQ(1U, hashCountedSet.count(ptr));
	EXPECT_EQ(1U, hashCountedSet.count(ptr.get()));
	}

	EXPECT_STREQ("deref(a) deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddUsingRelease)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(WTFMove(ptr));
	}

	EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddUsingMove)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(WTFMove(ptr));
	}

	EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddUsingRaw)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(ptr.get());

	EXPECT_STREQ("ref(a) ref(a) ", takeLogStr().c_str());
	EXPECT_EQ(1U, hashCountedSet.count(ptr));
	EXPECT_EQ(1U, hashCountedSet.count(ptr.get()));
	}

	EXPECT_STREQ("deref(a) deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddKeyAlreadyPresent)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	{
	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(ptr);
	}

	EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

	{
	RefPtr<RefLogger> ptr2(&a);
	auto addResult = hashCountedSet.add(ptr2);
	EXPECT_FALSE(addResult.isNewEntry);
	}

	EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
	}

	EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddUsingReleaseKeyAlreadyPresent)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	{
	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(ptr);
	}

	EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

	{
	RefPtr<RefLogger> ptr2(&a);
	auto addResult = hashCountedSet.add(WTFMove(ptr2));
	EXPECT_FALSE(addResult.isNewEntry);
	}

	EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
	}

	EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, RefPtrKey_AddUsingMoveKeyAlreadyPresent)
	{
	{
	DerivedRefLogger a("a");

	HashCountedSet<RefPtr<RefLogger>> hashCountedSet;

	{
	RefPtr<RefLogger> ptr(&a);
	hashCountedSet.add(ptr);
	}

	EXPECT_STREQ("ref(a) ref(a) deref(a) ", takeLogStr().c_str());

	{
	RefPtr<RefLogger> ptr2(&a);
	auto addResult = hashCountedSet.add(WTFMove(ptr2));
	EXPECT_FALSE(addResult.isNewEntry);
	}

	EXPECT_STREQ("ref(a) deref(a) ", takeLogStr().c_str());
	}

	EXPECT_STREQ("deref(a) ", takeLogStr().c_str());
	}

	TEST(WTF_HashCountedSet, Values)
	{
	HashCountedSet<int> set { 1, 1, 2, 3, 3 };

	auto vector = copyToVector(set.values());
	EXPECT_EQ(3U, vector.size());

	std::sort(vector.begin(), vector.end());
	EXPECT_EQ(1, vector[0]);
	EXPECT_EQ(2, vector[1]);
	EXPECT_EQ(3, vector[2]);
	}

	} // namespace TestWebKitAPI