blob: fc41bf8f8f0aad4b4820ff4cf8a368eb181ac62f [file] [log] [blame]
/*
* Copyright (c) 2013, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 "core/fetch/MemoryCache.h"
#include "core/fetch/MockImageResourceClient.h"
#include "core/fetch/RawResource.h"
#include "core/fetch/ResourcePtr.h"
#include "platform/network/ResourceRequest.h"
#include "platform/testing/UnitTestHelpers.h"
#include "public/platform/Platform.h"
#include "wtf/OwnPtr.h"
#include <gtest/gtest.h>
namespace blink {
class MemoryCacheTest : public ::testing::Test {
public:
class FakeDecodedResource : public Resource {
public:
FakeDecodedResource(const ResourceRequest& request, Type type)
: Resource(request, type)
{
}
virtual void appendData(const char* data, unsigned len)
{
Resource::appendData(data, len);
setDecodedSize(this->size());
}
protected:
void destroyDecodedDataIfPossible() override
{
setDecodedSize(0);
}
};
class FakeResource : public Resource {
public:
FakeResource(const ResourceRequest& request, Type type)
: Resource(request, type)
{
}
void fakeEncodedSize(size_t size)
{
setEncodedSize(size);
}
};
protected:
virtual void SetUp()
{
// Save the global memory cache to restore it upon teardown.
m_globalMemoryCache = replaceMemoryCacheForTesting(MemoryCache::create());
}
virtual void TearDown()
{
replaceMemoryCacheForTesting(m_globalMemoryCache.release());
}
Persistent<MemoryCache> m_globalMemoryCache;
};
// Verifies that setters and getters for cache capacities work correcty.
TEST_F(MemoryCacheTest, CapacityAccounting)
{
const size_t sizeMax = ~static_cast<size_t>(0);
const size_t totalCapacity = sizeMax / 4;
const size_t minDeadCapacity = sizeMax / 16;
const size_t maxDeadCapacity = sizeMax / 8;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
ASSERT_EQ(totalCapacity, memoryCache()->capacity());
ASSERT_EQ(minDeadCapacity, memoryCache()->minDeadCapacity());
ASSERT_EQ(maxDeadCapacity, memoryCache()->maxDeadCapacity());
}
TEST_F(MemoryCacheTest, VeryLargeResourceAccounting)
{
const size_t sizeMax = ~static_cast<size_t>(0);
const size_t totalCapacity = sizeMax / 4;
const size_t minDeadCapacity = sizeMax / 16;
const size_t maxDeadCapacity = sizeMax / 8;
const size_t resourceSize1 = sizeMax / 16;
const size_t resourceSize2 = sizeMax / 20;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
ResourcePtr<FakeResource> cachedResource =
new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedResource->fakeEncodedSize(resourceSize1);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(cachedResource.get());
ASSERT_EQ(cachedResource->size(), memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
MockImageResourceClient client(cachedResource);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(cachedResource->size(), memoryCache()->liveSize());
cachedResource->fakeEncodedSize(resourceSize2);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(cachedResource->size(), memoryCache()->liveSize());
}
// Verifies that dead resources that exceed dead resource capacity are evicted
// from cache when pruning.
static void TestDeadResourceEviction(Resource* resource1, Resource* resource2)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
memoryCache()->setMaxPruneDeferralDelay(0);
const unsigned totalCapacity = 1000000;
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = 0;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
const char data[5] = "abcd";
resource1->appendData(data, 3u);
resource2->appendData(data, 2u);
// The resource size has to be nonzero for this test to be meaningful, but
// we do not rely on it having any particular value.
ASSERT_GT(resource1->size(), 0u);
ASSERT_GT(resource2->size(), 0u);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(resource1);
ASSERT_EQ(resource1->size(), memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(resource2);
ASSERT_EQ(resource1->size() + resource2->size(), memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->prune();
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
}
TEST_F(MemoryCacheTest, DeadResourceEviction_Basic)
{
Resource* resource1 =
new Resource(ResourceRequest("http://test/resource1"), Resource::Raw);
Resource* resource2 =
new Resource(ResourceRequest("http://test/resource2"), Resource::Raw);
TestDeadResourceEviction(resource1, resource2);
}
TEST_F(MemoryCacheTest, DeadResourceEviction_MultipleResourceMaps)
{
Resource* resource1 =
new Resource(ResourceRequest("http://test/resource1"), Resource::Raw);
Resource* resource2 =
new Resource(ResourceRequest("http://test/resource2"), Resource::Raw);
resource2->setCacheIdentifier("foo");
TestDeadResourceEviction(resource1, resource2);
}
static void TestLiveResourceEvictionAtEndOfTask(Resource* cachedDeadResource, const ResourcePtr<Resource>& cachedLiveResource)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
const unsigned totalCapacity = 1;
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = 0;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
const char data[6] = "abcde";
cachedDeadResource->appendData(data, 3u);
MockImageResourceClient client(cachedLiveResource);
cachedLiveResource->appendData(data, 4u);
class Task1 : public WebTaskRunner::Task {
public:
Task1(const ResourcePtr<Resource>& live, Resource* dead)
: m_live(live)
, m_dead(dead)
{ }
void run() override
{
// The resource size has to be nonzero for this test to be meaningful, but
// we do not rely on it having any particular value.
ASSERT_GT(m_live->size(), 0u);
ASSERT_GT(m_dead->size(), 0u);
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(0u, memoryCache()->liveSize());
memoryCache()->add(m_dead);
memoryCache()->add(m_live.get());
memoryCache()->updateDecodedResource(m_live.get(), UpdateForPropertyChange);
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
memoryCache()->prune(); // Dead resources are pruned immediately
ASSERT_EQ(m_dead->size(), memoryCache()->deadSize());
ASSERT_EQ(m_live->size(), memoryCache()->liveSize());
ASSERT_GT(m_live->decodedSize(), 0u);
}
private:
ResourcePtr<Resource> m_live;
RawPtrWillBePersistent<Resource> m_dead;
};
class Task2 : public WebTaskRunner::Task {
public:
Task2(unsigned liveSizeWithoutDecode)
: m_liveSizeWithoutDecode(liveSizeWithoutDecode) { }
void run() override
{
// Next task: now, the live resource was evicted.
ASSERT_EQ(0u, memoryCache()->deadSize());
ASSERT_EQ(m_liveSizeWithoutDecode, memoryCache()->liveSize());
}
private:
unsigned m_liveSizeWithoutDecode;
};
Platform::current()->currentThread()->taskRunner()->postTask(BLINK_FROM_HERE, new Task1(cachedLiveResource, cachedDeadResource));
Platform::current()->currentThread()->taskRunner()->postTask(BLINK_FROM_HERE, new Task2(cachedLiveResource->encodedSize() + cachedLiveResource->overheadSize()));
testing::runPendingTasks();
}
// Verified that when ordering a prune in a runLoop task, the prune
// is deferred to the end of the task.
TEST_F(MemoryCacheTest, LiveResourceEvictionAtEndOfTask_Basic)
{
Resource* cachedDeadResource =
new Resource(ResourceRequest("hhtp://foo"), Resource::Raw);
ResourcePtr<Resource> cachedLiveResource =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
TestLiveResourceEvictionAtEndOfTask(cachedDeadResource, cachedLiveResource);
}
TEST_F(MemoryCacheTest, LiveResourceEvictionAtEndOfTask_MultipleResourceMaps)
{
{
Resource* cachedDeadResource =
new Resource(ResourceRequest("hhtp://foo"), Resource::Raw);
cachedDeadResource->setCacheIdentifier("foo");
ResourcePtr<Resource> cachedLiveResource =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
TestLiveResourceEvictionAtEndOfTask(cachedDeadResource, cachedLiveResource);
memoryCache()->evictResources();
}
{
Resource* cachedDeadResource =
new Resource(ResourceRequest("hhtp://foo"), Resource::Raw);
ResourcePtr<Resource> cachedLiveResource =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedLiveResource->setCacheIdentifier("foo");
TestLiveResourceEvictionAtEndOfTask(cachedDeadResource, cachedLiveResource);
memoryCache()->evictResources();
}
{
Resource* cachedDeadResource =
new Resource(ResourceRequest("hhtp://test/resource"), Resource::Raw);
cachedDeadResource->setCacheIdentifier("foo");
ResourcePtr<Resource> cachedLiveResource =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedLiveResource->setCacheIdentifier("bar");
TestLiveResourceEvictionAtEndOfTask(cachedDeadResource, cachedLiveResource);
memoryCache()->evictResources();
}
}
// Verifies that cached resources are evicted immediately after release when
// the total dead resource size is more than double the dead resource capacity.
static void TestClientRemoval(const ResourcePtr<Resource>& resource1, const ResourcePtr<Resource>& resource2)
{
const char data[6] = "abcde";
MockImageResourceClient client1(resource1);
resource1->appendData(data, 4u);
MockImageResourceClient client2(resource2);
resource2->appendData(data, 4u);
const unsigned minDeadCapacity = 0;
const unsigned maxDeadCapacity = ((resource1->size() + resource2->size()) / 2) - 1;
const unsigned totalCapacity = maxDeadCapacity;
memoryCache()->setCapacities(minDeadCapacity, maxDeadCapacity, totalCapacity);
memoryCache()->add(resource1.get());
memoryCache()->add(resource2.get());
// Call prune. There is nothing to prune, but this will initialize
// the prune timestamp, allowing future prunes to be deferred.
memoryCache()->prune();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), resource1->size() + resource2->size());
// Removing the client from resource1 should result in all resources
// remaining in cache since the prune is deferred.
client1.removeAsClient();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), resource1->size());
ASSERT_EQ(memoryCache()->liveSize(), resource2->size());
ASSERT_TRUE(memoryCache()->contains(resource1.get()));
ASSERT_TRUE(memoryCache()->contains(resource2.get()));
// Removing the client from resource2 should result in immediate
// eviction of resource2 because we are over the prune deferral limit.
client2.removeAsClient();
ASSERT_GT(resource1->decodedSize(), 0u);
ASSERT_GT(resource2->decodedSize(), 0u);
ASSERT_EQ(memoryCache()->deadSize(), resource1->size());
ASSERT_EQ(memoryCache()->liveSize(), 0u);
ASSERT_TRUE(memoryCache()->contains(resource1.get()));
ASSERT_FALSE(memoryCache()->contains(resource2.get()));
}
TEST_F(MemoryCacheTest, ClientRemoval_Basic)
{
ResourcePtr<Resource> resource1 =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
ResourcePtr<Resource> resource2 =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
TestClientRemoval(resource1, resource2);
}
TEST_F(MemoryCacheTest, ClientRemoval_MultipleResourceMaps)
{
{
ResourcePtr<Resource> resource1 =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
resource1->setCacheIdentifier("foo");
ResourcePtr<Resource> resource2 =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
TestClientRemoval(resource1, resource2);
memoryCache()->evictResources();
}
{
ResourcePtr<Resource> resource1 =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
ResourcePtr<Resource> resource2 =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource2->setCacheIdentifier("foo");
TestClientRemoval(resource1, resource2);
memoryCache()->evictResources();
}
{
ResourcePtr<Resource> resource1 =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource1->setCacheIdentifier("foo");
ResourcePtr<Resource> resource2 =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource2->setCacheIdentifier("bar");
TestClientRemoval(resource1, resource2);
memoryCache()->evictResources();
}
}
// Verifies that CachedResources are evicted from the decode cache
// according to their DecodeCachePriority.
static void TestDecodeCacheOrder(const ResourcePtr<Resource>& cachedImageLowPriority, const ResourcePtr<Resource>& cachedImageHighPriority)
{
memoryCache()->setDelayBeforeLiveDecodedPrune(0);
memoryCache()->setMaxPruneDeferralDelay(0);
MockImageResourceClient clientLowPriority(cachedImageLowPriority);
MockImageResourceClient clientHighPriority(cachedImageHighPriority);
const char data[5] = "abcd";
cachedImageLowPriority->appendData(data, 1u);
cachedImageHighPriority->appendData(data, 4u);
const unsigned lowPrioritySize = cachedImageLowPriority->size();
const unsigned highPrioritySize = cachedImageHighPriority->size();
const unsigned lowPriorityMockDecodeSize = cachedImageLowPriority->decodedSize();
const unsigned highPriorityMockDecodeSize = cachedImageHighPriority->decodedSize();
const unsigned totalSize = lowPrioritySize + highPrioritySize;
// Verify that the sizes are different to ensure that we can test eviction order.
ASSERT_GT(lowPrioritySize, 0u);
ASSERT_NE(lowPrioritySize, highPrioritySize);
ASSERT_GT(lowPriorityMockDecodeSize, 0u);
ASSERT_NE(lowPriorityMockDecodeSize, highPriorityMockDecodeSize);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), 0u);
// Add the items. The item added first would normally be evicted first.
memoryCache()->add(cachedImageHighPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize);
memoryCache()->add(cachedImageLowPriority.get());
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), highPrioritySize + lowPrioritySize);
// Insert all items in the decoded items list with the same priority
memoryCache()->updateDecodedResource(cachedImageHighPriority.get(), UpdateForPropertyChange);
memoryCache()->updateDecodedResource(cachedImageLowPriority.get(), UpdateForPropertyChange);
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize);
// Now we will assign their priority and make sure they are moved to the correct buckets.
memoryCache()->updateDecodedResource(cachedImageLowPriority.get(), UpdateForPropertyChange, MemoryCacheLiveResourcePriorityLow);
memoryCache()->updateDecodedResource(cachedImageHighPriority.get(), UpdateForPropertyChange, MemoryCacheLiveResourcePriorityHigh);
// Should first prune the LowPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize);
// Should prune the HighPriority item.
memoryCache()->setCapacities(memoryCache()->minDeadCapacity(), memoryCache()->liveSize() - 10, memoryCache()->liveSize() - 10);
memoryCache()->prune();
ASSERT_EQ(memoryCache()->deadSize(), 0u);
ASSERT_EQ(memoryCache()->liveSize(), totalSize - lowPriorityMockDecodeSize - highPriorityMockDecodeSize);
}
TEST_F(MemoryCacheTest, DecodeCacheOrder_Basic)
{
ResourcePtr<FakeDecodedResource> cachedImageLowPriority =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
ResourcePtr<FakeDecodedResource> cachedImageHighPriority =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
TestDecodeCacheOrder(cachedImageLowPriority, cachedImageHighPriority);
}
TEST_F(MemoryCacheTest, DecodeCacheOrder_MultipleResourceMaps)
{
{
ResourcePtr<FakeDecodedResource> cachedImageLowPriority =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
ResourcePtr<FakeDecodedResource> cachedImageHighPriority =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedImageLowPriority->setCacheIdentifier("foo");
TestDecodeCacheOrder(cachedImageLowPriority, cachedImageHighPriority);
memoryCache()->evictResources();
}
{
ResourcePtr<FakeDecodedResource> cachedImageLowPriority =
new FakeDecodedResource(ResourceRequest("http://foo.com"), Resource::Raw);
ResourcePtr<FakeDecodedResource> cachedImageHighPriority =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedImageHighPriority->setCacheIdentifier("foo");
TestDecodeCacheOrder(cachedImageLowPriority, cachedImageHighPriority);
memoryCache()->evictResources();
}
{
ResourcePtr<FakeDecodedResource> cachedImageLowPriority =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedImageLowPriority->setCacheIdentifier("foo");
ResourcePtr<FakeDecodedResource> cachedImageHighPriority =
new FakeDecodedResource(ResourceRequest("http://test/resource"), Resource::Raw);
cachedImageHighPriority->setCacheIdentifier("bar");
TestDecodeCacheOrder(cachedImageLowPriority, cachedImageHighPriority);
memoryCache()->evictResources();
}
}
TEST_F(MemoryCacheTest, MultipleReplace)
{
ResourcePtr<FakeResource> resource1 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->add(resource1.get());
ResourcePtr<FakeResource> resource2 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->replace(resource2.get(), resource1.get());
EXPECT_TRUE(memoryCache()->contains(resource2.get()));
EXPECT_FALSE(memoryCache()->contains(resource1.get()));
ResourcePtr<FakeResource> resource3 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->replace(resource3.get(), resource2.get());
EXPECT_TRUE(memoryCache()->contains(resource3.get()));
EXPECT_FALSE(memoryCache()->contains(resource2.get()));
}
TEST_F(MemoryCacheTest, RemoveDuringRevalidation)
{
ResourcePtr<FakeResource> resource1 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->add(resource1.get());
ResourcePtr<FakeResource> resource2 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->remove(resource1.get());
memoryCache()->add(resource2.get());
EXPECT_TRUE(memoryCache()->contains(resource2.get()));
EXPECT_FALSE(memoryCache()->contains(resource1.get()));
ResourcePtr<FakeResource> resource3 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->remove(resource2.get());
memoryCache()->add(resource3.get());
EXPECT_TRUE(memoryCache()->contains(resource3.get()));
EXPECT_FALSE(memoryCache()->contains(resource2.get()));
memoryCache()->replace(resource1.get(), resource2.get());
EXPECT_TRUE(memoryCache()->contains(resource1.get()));
EXPECT_FALSE(memoryCache()->contains(resource2.get()));
EXPECT_FALSE(memoryCache()->contains(resource3.get()));
}
TEST_F(MemoryCacheTest, ResourceMapIsolation)
{
ResourcePtr<FakeResource> resource1 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
memoryCache()->add(resource1.get());
ResourcePtr<FakeResource> resource2 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource2->setCacheIdentifier("foo");
memoryCache()->add(resource2.get());
EXPECT_TRUE(memoryCache()->contains(resource1.get()));
EXPECT_TRUE(memoryCache()->contains(resource2.get()));
const KURL url = KURL(ParsedURLString, "http://test/resource");
EXPECT_EQ(resource1.get(), memoryCache()->resourceForURL(url));
EXPECT_EQ(resource1.get(), memoryCache()->resourceForURL(url, memoryCache()->defaultCacheIdentifier()));
EXPECT_EQ(resource2.get(), memoryCache()->resourceForURL(url, "foo"));
EXPECT_EQ(0, memoryCache()->resourceForURL(KURL()));
ResourcePtr<FakeResource> resource3 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource3->setCacheIdentifier("foo");
memoryCache()->remove(resource2.get());
memoryCache()->add(resource3.get());
EXPECT_TRUE(memoryCache()->contains(resource1.get()));
EXPECT_FALSE(memoryCache()->contains(resource2.get()));
EXPECT_TRUE(memoryCache()->contains(resource3.get()));
ResourcePtr<FakeResource> resource4 = new FakeResource(ResourceRequest("http://test/resource"), Resource::Raw);
resource4->setCacheIdentifier("foo");
memoryCache()->replace(resource4.get(), resource3.get());
EXPECT_TRUE(memoryCache()->contains(resource1.get()));
EXPECT_FALSE(memoryCache()->contains(resource3.get()));
EXPECT_TRUE(memoryCache()->contains(resource4.get()));
WillBeHeapVector<RawPtrWillBeMember<Resource>> resources = memoryCache()->resourcesForURL(url);
EXPECT_EQ(2u, resources.size());
memoryCache()->evictResources();
EXPECT_FALSE(memoryCache()->contains(resource1.get()));
EXPECT_FALSE(memoryCache()->contains(resource3.get()));
}
} // namespace