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// Copyright (c) 2010 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.
#include <stdlib.h>
#include "remoting/base/compressor_zlib.h"
#include "testing/gtest/include/gtest/gtest.h"
static void GenerateTestData(uint8* data, int size, int seed) {
srand(seed);
for (int i = 0; i < size; ++i)
data[i] = rand() % 256;
}
// Keep compressing |input_data| into |output_data| until the last
// bytes is consumed.
static void Compress(remoting::Compressor* compressor,
const uint8* input_data, int input_size,
uint8* output_data, int output_size) {
// Feed data into the compress until the end.
// This loop will rewrite |output_data| continuously.
int consumed = 0;
int written = 0;
while (compressor->Process(input_data, input_size,
output_data, output_size,
&consumed, &written)) {
input_data += consumed;
input_size -= consumed;
}
}
TEST(CompressorZlibTest, Compress) {
static const int kRawDataSize = 1024 * 128;
static const int kCompressedDataSize = 256;
uint8 raw_data[kRawDataSize];
uint8 compressed_data[kCompressedDataSize];
// Generate the test data.g
GenerateTestData(raw_data, kRawDataSize, 99);
// Then use the compressor to compress.
remoting::CompressorZlib compressor;
Compress(&compressor, raw_data, kRawDataSize,
compressed_data, kCompressedDataSize);
}
// Checks that zlib can work with a small output buffer by reading
// less from the input.
TEST(CompressorZlibTest, SmallOutputBuffer) {
static const int kRawDataSize = 1024 * 128;
static const int kCompressedDataSize = 1;
uint8 raw_data[kRawDataSize];
uint8 compressed_data[kCompressedDataSize];
// Generate the test data.g
GenerateTestData(raw_data, kRawDataSize, 99);
// Then use the compressor to compress.
remoting::CompressorZlib compressor;
Compress(&compressor, raw_data, kRawDataSize,
compressed_data, kCompressedDataSize);
}
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