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97 lines
2.7 KiB
97 lines
2.7 KiB
4 months ago
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// Copyright 2015 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _BSDIFF_TEST_UTILS_H_
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#define _BSDIFF_TEST_UTILS_H_
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#include <gtest/gtest.h>
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#include <string>
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#include <vector>
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#include "bsdiff/logging.h"
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#define TEST_AND_RETURN_FALSE(_x) \
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do { \
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if (!static_cast<bool>(_x)) { \
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LOG(ERROR) << #_x " failed."; \
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return false; \
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} \
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} while (0)
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namespace test_utils {
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class BsdiffTestEnvironment : public ::testing::Environment {
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public:
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virtual void SetUp();
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};
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// Reads all the contents of the file |path| into |out|. Returns whether it
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// read up to the end of file.
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bool ReadFile(const std::string& path, std::vector<uint8_t>* out);
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// Overrides the file |path| with the contents passed in |out|. Returns whether
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// the operation succeeded.
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bool WriteFile(const std::string& path, std::vector<uint8_t> contents);
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// Utility class to create and delete a temp file.
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class ScopedTempFile {
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public:
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// Creates a temp file with the passed |pattern|. The pattern should end with
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// "XXXXXX", that will be replaced with a random string. The file will be
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// removed when this instance is destroyed.
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explicit ScopedTempFile(const std::string& pattern);
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~ScopedTempFile();
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std::string filename() const { return filename_; }
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const char* c_str() const { return filename_.c_str(); }
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// Releases the temporary file. It will not be deleted when this instance is
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// destroyed.
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void release() { filename_.clear(); }
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private:
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std::string filename_;
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};
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// This struct representes a parsed BSDIFF40 file.
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struct BsdiffPatchFile {
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static const size_t kHeaderSize = 32;
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// Parses a BSDIFF40 file and stores the contents in the local methods.
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bool LoadFromFile(const std::string& filename);
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// Returns wheter the patch file is valid.
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bool IsValid() const;
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// The magic string in the header file. Normally "BSDIFF40".
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std::string magic;
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// The length of the first (ctrl) bzip2 stream. Negative values are invalid.
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int64_t ctrl_len = -1;
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// The length of the first (diff) bzip2 stream. Negative values are invalid.
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int64_t diff_len = -1;
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// The length of the first (diff) bzip2 stream. This value is not stored in
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// the file, but generated based on the |file_size|.
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uint64_t extra_len = 0;
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// The length of the new file after applying the patch. Negative values are
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// invalid.
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int64_t new_file_len = -1;
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// The three compressed streams.
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std::vector<uint8_t> bz2_ctrl;
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std::vector<uint8_t> bz2_diff;
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std::vector<uint8_t> bz2_extra;
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uint64_t file_size = 0;
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};
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} // namespace test_utils
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#endif // _BSDIFF_TEST_UTILS_H_
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