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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/image/buffer_w_stream.h"
#include <stdint.h>
#include <algorithm>
#include <vector>
#include "testing/gtest/include/gtest/gtest.h"
namespace gfx {
namespace {
using BufferWStreamTest = testing::Test;
TEST(BufferWStreamTest, WriteBuffer) {
BufferWStream stream;
std::vector<uint8_t> buffer;
for (uint8_t i = 0; i < 10; i++) {
buffer.push_back(i);
}
ASSERT_TRUE(stream.write(buffer.data(), buffer.size()));
std::vector<uint8_t> buffer_from_stream = stream.TakeBuffer();
EXPECT_TRUE(std::ranges::equal(buffer, buffer_from_stream));
std::vector<uint8_t> buffer2;
for (uint8_t i = 5; i > 0; i--) {
buffer2.push_back(i);
}
// Checks that the stream is cleared after TakeBuffer() so that it won't
// contain old data.
ASSERT_TRUE(stream.write(buffer2.data(), buffer2.size()));
buffer_from_stream = stream.TakeBuffer();
EXPECT_TRUE(std::ranges::equal(buffer2, buffer_from_stream));
// Checks that calling write() twice works expectedly.
ASSERT_TRUE(stream.write(buffer.data(), buffer.size()));
ASSERT_TRUE(stream.write(buffer2.data(), buffer2.size()));
buffer_from_stream = stream.TakeBuffer();
EXPECT_TRUE(std::ranges::equal(buffer.begin(), buffer.end(),
buffer_from_stream.begin(),
buffer_from_stream.begin() + buffer.size()));
EXPECT_TRUE(std::ranges::equal(buffer2.begin(), buffer2.end(),
buffer_from_stream.begin() + buffer.size(),
buffer_from_stream.end()));
}
} // namespace
} // namespace gfx
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