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/* test_util.h
* Copyright 2021 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Utility functions in testing.
*/
#ifndef _TEST_UTIL_H_
#define _TEST_UTIL_H_
#include <stdio.h>
#include <memory>
#include <string>
#include "config_parser.h"
namespace mj {
namespace internal {
// Functor for |ScopedFILE| (below).
struct ScopedFILECloser {
inline void operator()(FILE *x) const {
if (x) {
fclose(x);
}
}
};
// Functor for |ScopedConfigEntry| (below).
struct ScopedConfigEntryDeleter {
inline void operator()(config_entry *entry) const {
if (entry) {
free(entry);
}
}
};
} // namespace internal
} // namespace mj
using ScopedFILE = std::unique_ptr<FILE, mj::internal::ScopedFILECloser>;
using ScopedConfigEntry =
std::unique_ptr<config_entry, mj::internal::ScopedConfigEntryDeleter>;
/*
* write_to_pipe: write a string as the file content into a pipe based
* file handle. This is particularly useful when testing with temporary data
* files, without dealing with complexities such as relative file path, file
* permission and etc. However, a pipe has limited capacity so write_to_pipe
* will hang when a big enough string is written. This is for use in testing
* only.
*
* Returns a FILE* that contains @content.
*/
FILE *write_to_pipe(const std::string& content);
/*
* source_path: return the path to a test fixture located in the current
* source tree. This uses the `SRC` environment variable as the root of the
* tree, falling back to the current directory.
*/
std::string source_path(const std::string& file);
#endif /* _TEST_UTIL_H_ */
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