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// Copyright 2018 The Chromium OS 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 "bsdiff/bz2_decompressor.h"
#include <memory>
#include <gtest/gtest.h>
namespace {
// echo -n "Hello!" | bzip2 -9 | hexdump -v -e '" " 11/1 "0x%02x, " "\n"'
constexpr uint8_t kBZ2Hello[] = {
0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59, 0x1a,
0xea, 0x74, 0xba, 0x00, 0x00, 0x00, 0x95, 0x00, 0x20, 0x00, 0x00,
0x40, 0x02, 0x04, 0xa0, 0x00, 0x21, 0x83, 0x41, 0x9a, 0x02, 0x5c,
0x2e, 0x2e, 0xe4, 0x8a, 0x70, 0xa1, 0x20, 0x35, 0xd4, 0xe9, 0x74,
};
} // namespace
namespace bsdiff {
class BZ2DecompressorTest : public testing::Test {
protected:
void SetUp() {
decompressor_.reset(new BZ2Decompressor());
EXPECT_NE(nullptr, decompressor_.get());
}
std::unique_ptr<BZ2Decompressor> decompressor_;
};
TEST_F(BZ2DecompressorTest, ReadingFromEmptyFileTest) {
uint8_t data = 0;
EXPECT_TRUE(decompressor_->SetInputData(&data, 0));
uint8_t output_data[10];
EXPECT_FALSE(decompressor_->Read(output_data, sizeof(output_data)));
}
// Check that we fail to read from a truncated file.
TEST_F(BZ2DecompressorTest, ReadingFromTruncatedFileTest) {
// We feed only half of the compressed file.
EXPECT_TRUE(decompressor_->SetInputData(kBZ2Hello, sizeof(kBZ2Hello) / 2));
uint8_t output_data[6];
EXPECT_FALSE(decompressor_->Read(output_data, sizeof(output_data)));
}
// Check that we fail to read more than it is available in the file.
TEST_F(BZ2DecompressorTest, ReadingMoreThanAvailableTest) {
EXPECT_TRUE(decompressor_->SetInputData(kBZ2Hello, sizeof(kBZ2Hello)));
uint8_t output_data[1000];
EXPECT_FALSE(decompressor_->Read(output_data, sizeof(output_data)));
}
} // namespace bsdiff
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