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// Copyright (c) 2009 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.
// Tests for the ResourceMap.
#include "gpu/command_buffer/service/precompile.h"
#include "gpu/command_buffer/service/resource.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gpu {
// Mock resource implementation that checks for leaks.
class ResourceMock : public Resource {
public:
ResourceMock() : Resource() {
++instance_count_;
}
virtual ~ResourceMock() {
--instance_count_;
}
// Returns the instance count. The instance count is increased in the
// constructor and decreased in the destructor, to track leaks. The reason is
// that we can't mock the destructor, though we want to make sure the mock is
// destroyed.
static int instance_count() { return instance_count_; }
private:
static int instance_count_;
DISALLOW_COPY_AND_ASSIGN(ResourceMock);
};
int ResourceMock::instance_count_ = 0;
// Test fixture for ResourceMap test. Creates a ResourceMap using a mock
// Resource, and checks for ResourceMock leaks.
class ResourceMapTest : public testing::Test {
protected:
typedef ResourceMap<ResourceMock> Map;
virtual void SetUp() {
instance_count_ = ResourceMock::instance_count();
map_.reset(new Map());
}
virtual void TearDown() {
CheckLeaks();
}
// Makes sure we didn't leak any ResourceMock object.
void CheckLeaks() {
EXPECT_EQ(instance_count_, ResourceMock::instance_count());
}
Map *map() const { return map_.get(); }
private:
int instance_count_;
scoped_ptr<Map> map_;
};
TEST_F(ResourceMapTest, TestMap) {
// check that initial mapping is empty.
EXPECT_EQ(NULL, map()->Get(0));
EXPECT_EQ(NULL, map()->Get(1));
EXPECT_EQ(NULL, map()->Get(392));
// create a new resource, assign it to an ID.
ResourceMock *resource = new ResourceMock();
map()->Assign(123, resource);
EXPECT_EQ(resource, map()->Get(123));
// Destroy the resource, making sure the object is deleted.
EXPECT_EQ(true, map()->Destroy(123));
EXPECT_EQ(false, map()->Destroy(123)); // destroying again should fail.
resource = NULL;
CheckLeaks();
// create a new resource, add it to the map, and make sure it gets deleted
// when we assign a new resource to that ID.
resource = new ResourceMock();
map()->Assign(1, resource);
resource = new ResourceMock();
map()->Assign(1, resource);
EXPECT_EQ(resource, map()->Get(1)); // check that we have the new resource.
EXPECT_EQ(true, map()->Destroy(1));
CheckLeaks();
// Adds 3 resources, then call DestroyAllResources().
resource = new ResourceMock();
map()->Assign(1, resource);
resource = new ResourceMock();
map()->Assign(2, resource);
resource = new ResourceMock();
map()->Assign(3, resource);
map()->DestroyAllResources();
EXPECT_EQ(NULL, map()->Get(1));
EXPECT_EQ(NULL, map()->Get(2));
EXPECT_EQ(NULL, map()->Get(3));
CheckLeaks();
}
} // namespace gpu
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