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/*
* Copyright (C) 2014 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/xml/parser/SharedBufferReader.h"
#include "platform/SharedBuffer.h"
#include <algorithm>
#include <cstdlib>
#include <gtest/gtest.h>
#include <vector>
namespace blink {
TEST(SharedBufferReaderTest, readDataWithNullSharedBuffer)
{
SharedBufferReader reader(nullptr);
char buffer[32];
EXPECT_EQ(0, reader.readData(buffer, sizeof(buffer)));
}
TEST(SharedBufferReaderTest, readDataWith0BytesRequest)
{
RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create();
SharedBufferReader reader(sharedBuffer);
EXPECT_EQ(0, reader.readData(0, 0));
}
TEST(SharedBufferReaderTest, readDataWithSizeBiggerThanSharedBufferSize)
{
static const char testData[] = "hello";
RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(testData, sizeof(testData));
SharedBufferReader reader(sharedBuffer);
const int extraBytes = 3;
char outputBuffer[sizeof(testData) + extraBytes];
const char initializationByte = 'a';
memset(outputBuffer, initializationByte, sizeof(outputBuffer));
EXPECT_EQ(sizeof(testData),
static_cast<size_t>(reader.readData(outputBuffer, sizeof(outputBuffer))));
EXPECT_TRUE(std::equal(testData, testData + sizeof(testData), outputBuffer));
// Check that the bytes past index sizeof(testData) were not touched.
EXPECT_EQ(extraBytes,
std::count(outputBuffer, outputBuffer + sizeof(outputBuffer), initializationByte));
}
TEST(SharedBufferReaderTest, readDataInMultiples)
{
const int iterationsCount = 8;
const int bytesPerIteration = 64;
std::vector<char> testData(iterationsCount * bytesPerIteration);
std::generate(testData.begin(), testData.end(), &std::rand);
RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(&testData[0], testData.size());
SharedBufferReader reader(sharedBuffer);
std::vector<char> destinationVector(testData.size());
for (int i = 0; i < iterationsCount; ++i) {
const int offset = i * bytesPerIteration;
const int bytesRead = reader.readData(&destinationVector[0] + offset, bytesPerIteration);
EXPECT_EQ(bytesPerIteration, bytesRead);
}
EXPECT_TRUE(std::equal(testData.begin(), testData.end(), destinationVector.begin()));
}
TEST(SharedBufferReaderTest, clearSharedBufferBetweenCallsToReadData)
{
std::vector<char> testData(128);
std::generate(testData.begin(), testData.end(), &std::rand);
RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(&testData[0], testData.size());
SharedBufferReader reader(sharedBuffer);
std::vector<char> destinationVector(testData.size());
const int bytesToRead = testData.size() / 2;
EXPECT_EQ(bytesToRead, reader.readData(&destinationVector[0], bytesToRead));
sharedBuffer->clear();
EXPECT_EQ(0, reader.readData(&destinationVector[0], bytesToRead));
}
} // namespace blink
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