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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "GraphicBufferAllocatorTest"
#include <ui/GraphicBuffer.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/PixelFormat.h>
#include <gtest/gtest.h>
#include "mock/MockGrallocAllocator.h"
#include <algorithm>
#include <limits>
namespace android {
namespace {
constexpr uint32_t kTestWidth = 1024;
constexpr uint32_t kTestHeight = 1;
constexpr uint32_t kTestLayerCount = 1;
constexpr uint64_t kTestUsage = GraphicBuffer::USAGE_SW_WRITE_OFTEN;
} // namespace
using ::testing::DoAll;
using ::testing::Return;
using ::testing::SetArgPointee;
class TestableGraphicBufferAllocator : public GraphicBufferAllocator {
public:
TestableGraphicBufferAllocator() {
mAllocator = std::make_unique<const mock::MockGrallocAllocator>();
}
void setUpAllocateExpectations(status_t err, uint32_t stride) {
std::cout << "Setting expected stride to " << stride << std::endl;
EXPECT_CALL(*(reinterpret_cast<const mock::MockGrallocAllocator*>(mAllocator.get())),
allocate)
.WillOnce(DoAll(SetArgPointee<7>(stride), Return(err)));
}
std::unique_ptr<const GrallocAllocator>& getAllocator() { return mAllocator; }
};
class GraphicBufferAllocatorTest : public testing::Test {
public:
GraphicBufferAllocatorTest() : mAllocator() {}
const TestableGraphicBufferAllocator& getAllocator() { return mAllocator; }
protected:
TestableGraphicBufferAllocator mAllocator;
};
TEST_F(GraphicBufferAllocatorTest, AllocateNoError) {
mAllocator.setUpAllocateExpectations(NO_ERROR, kTestWidth);
android::PixelFormat format = PIXEL_FORMAT_RGBA_8888;
uint32_t stride = 0;
buffer_handle_t handle;
status_t err = mAllocator.allocate(kTestWidth, kTestHeight, format, kTestLayerCount, kTestUsage,
&handle, &stride, 0, "GraphicBufferAllocatorTest");
ASSERT_EQ(NO_ERROR, err);
ASSERT_EQ(kTestWidth, stride);
}
TEST_F(GraphicBufferAllocatorTest, AllocateZeroStride) {
android::PixelFormat format = PIXEL_FORMAT_RGBA_8888;
uint32_t expectedStride = 0;
mAllocator.setUpAllocateExpectations(NO_ERROR, expectedStride);
uint32_t stride = 0;
buffer_handle_t handle;
// a divide by zero would cause a crash
status_t err = mAllocator.allocate(kTestWidth, kTestHeight, format, kTestLayerCount, kTestUsage,
&handle, &stride, 0, "GraphicBufferAllocatorTest");
ASSERT_EQ(NO_ERROR, err);
ASSERT_EQ(expectedStride, stride);
}
TEST_F(GraphicBufferAllocatorTest, AllocateLargeStride) {
uint32_t height = std::numeric_limits<uint32_t>::max();
uint32_t bpp = 4;
android::PixelFormat format = PIXEL_FORMAT_RGBA_8888;
if (std::numeric_limits<size_t>::max() / height / bpp >= std::numeric_limits<uint32_t>::max()) {
std::cout << "stride cannot cause overflow" << std::endl;
GTEST_SUCCEED() << "stride cannot cause overflow";
return;
}
uint32_t width = std::numeric_limits<size_t>::max() / height / bpp;
uint32_t expectedStride = std::numeric_limits<uint32_t>::max();
mAllocator.setUpAllocateExpectations(NO_ERROR, expectedStride);
uint32_t stride = 0;
buffer_handle_t handle;
// an overflow would cause a crash
status_t err = mAllocator.allocate(width, height, format, kTestLayerCount, kTestUsage, &handle,
&stride, 0, "GraphicBufferAllocatorTest");
ASSERT_EQ(NO_ERROR, err);
ASSERT_EQ(expectedStride, stride);
}
} // namespace android
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