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/*
* Copyright (C) 2012 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 "wtf/HashSet.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/RefCounted.h"
#include <gtest/gtest.h>
namespace {
template<int initialCapacity>
struct InitialCapacityTestHashTraits : public WTF::UnsignedWithZeroKeyHashTraits<int> {
static const int minimumTableSize = initialCapacity;
};
template<unsigned size>
void testInitialCapacity()
{
const unsigned initialCapacity = WTF::HashTableCapacityForSize<size>::value;
HashSet<int, DefaultHash<int>::Hash, InitialCapacityTestHashTraits<initialCapacity>> testSet;
// Initial capacity is null.
EXPECT_EQ(0UL, testSet.capacity());
// Adding items up to size should never change the capacity.
for (size_t i = 0; i < size; ++i) {
testSet.add(i);
EXPECT_EQ(initialCapacity, testSet.capacity());
}
// Adding items up to less than half the capacity should not change the capacity.
unsigned capacityLimit = initialCapacity / 2 - 1;
for (size_t i = size; i < capacityLimit; ++i) {
testSet.add(i);
EXPECT_EQ(initialCapacity, testSet.capacity());
}
// Adding one more item increase the capacity.
testSet.add(initialCapacity);
EXPECT_GT(testSet.capacity(), initialCapacity);
}
template<unsigned size> void generateTestCapacityUpToSize();
template<> void generateTestCapacityUpToSize<0>()
{
}
template<unsigned size> void generateTestCapacityUpToSize()
{
generateTestCapacityUpToSize<size - 1>();
testInitialCapacity<size>();
}
TEST(HashSetTest, InitialCapacity)
{
generateTestCapacityUpToSize<128>();
}
struct Dummy {
Dummy(bool& deleted) : deleted(deleted) { }
~Dummy()
{
deleted = true;
}
bool& deleted;
};
TEST(HashSetTest, HashSetOwnPtr)
{
bool deleted1 = false, deleted2 = false;
typedef HashSet<OwnPtr<Dummy>> OwnPtrSet;
OwnPtrSet set;
Dummy* ptr1 = new Dummy(deleted1);
{
// AddResult in a separate scope to avoid assertion hit,
// since we modify the container further.
HashSet<OwnPtr<Dummy>>::AddResult res1 = set.add(adoptPtr(ptr1));
EXPECT_EQ(ptr1, res1.storedValue->get());
}
EXPECT_FALSE(deleted1);
EXPECT_EQ(1UL, set.size());
OwnPtrSet::iterator it1 = set.find(ptr1);
EXPECT_NE(set.end(), it1);
EXPECT_EQ(ptr1, (*it1));
Dummy* ptr2 = new Dummy(deleted2);
{
HashSet<OwnPtr<Dummy>>::AddResult res2 = set.add(adoptPtr(ptr2));
EXPECT_EQ(res2.storedValue->get(), ptr2);
}
EXPECT_FALSE(deleted2);
EXPECT_EQ(2UL, set.size());
OwnPtrSet::iterator it2 = set.find(ptr2);
EXPECT_NE(set.end(), it2);
EXPECT_EQ(ptr2, (*it2));
set.remove(ptr1);
EXPECT_TRUE(deleted1);
set.clear();
EXPECT_TRUE(deleted2);
EXPECT_TRUE(set.isEmpty());
deleted1 = false;
deleted2 = false;
{
OwnPtrSet set;
set.add(adoptPtr(new Dummy(deleted1)));
set.add(adoptPtr(new Dummy(deleted2)));
}
EXPECT_TRUE(deleted1);
EXPECT_TRUE(deleted2);
deleted1 = false;
deleted2 = false;
OwnPtr<Dummy> ownPtr1;
OwnPtr<Dummy> ownPtr2;
ptr1 = new Dummy(deleted1);
ptr2 = new Dummy(deleted2);
{
OwnPtrSet set;
set.add(adoptPtr(ptr1));
set.add(adoptPtr(ptr2));
ownPtr1 = set.take(ptr1);
EXPECT_EQ(1UL, set.size());
ownPtr2 = set.takeAny();
EXPECT_TRUE(set.isEmpty());
}
EXPECT_FALSE(deleted1);
EXPECT_FALSE(deleted2);
EXPECT_EQ(ptr1, ownPtr1);
EXPECT_EQ(ptr2, ownPtr2);
}
class DummyRefCounted: public WTF::RefCounted<DummyRefCounted> {
public:
DummyRefCounted(bool& isDeleted) : m_isDeleted(isDeleted) { m_isDeleted = false; }
~DummyRefCounted() { m_isDeleted = true; }
void ref()
{
WTF::RefCounted<DummyRefCounted>::ref();
++s_refInvokesCount;
}
static int s_refInvokesCount;
private:
bool& m_isDeleted;
};
int DummyRefCounted::s_refInvokesCount = 0;
TEST(HashSetTest, HashSetRefPtr)
{
bool isDeleted = false;
RefPtr<DummyRefCounted> ptr = adoptRef(new DummyRefCounted(isDeleted));
EXPECT_EQ(0, DummyRefCounted::s_refInvokesCount);
HashSet<RefPtr<DummyRefCounted>> set;
set.add(ptr);
// Referenced only once (to store a copy in the container).
EXPECT_EQ(1, DummyRefCounted::s_refInvokesCount);
DummyRefCounted* rawPtr = ptr.get();
EXPECT_TRUE(set.contains(rawPtr));
EXPECT_NE(set.end(), set.find(rawPtr));
EXPECT_TRUE(set.contains(ptr));
EXPECT_NE(set.end(), set.find(ptr));
ptr.clear();
EXPECT_FALSE(isDeleted);
set.remove(rawPtr);
EXPECT_TRUE(isDeleted);
EXPECT_TRUE(set.isEmpty());
EXPECT_EQ(1, DummyRefCounted::s_refInvokesCount);
}
} // namespace
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