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https://github.com/tomahawk-player/tomahawk.git
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125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
// Copyright (c) 2013, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Utility class for creating a temporary file for unit tests
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// that is deleted in the destructor.
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#ifndef GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE
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#define GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE
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#include <unistd.h>
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#include <sys/types.h>
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#include <string>
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#include "breakpad_googletest_includes.h"
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#include "common/linux/eintr_wrapper.h"
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#include "common/tests/auto_tempdir.h"
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namespace google_breakpad {
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class AutoTestFile {
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public:
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// Create a new empty test file.
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// test_prefix: (input) test-specific prefix, can't be NULL.
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explicit AutoTestFile(const char* test_prefix) {
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Init(test_prefix);
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}
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// Create a new test file, and fill it with initial data from a C string.
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// The terminating zero is not written.
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// test_prefix: (input) test-specific prefix, can't be NULL.
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// text: (input) initial content.
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AutoTestFile(const char* test_prefix, const char* text) {
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Init(test_prefix);
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if (fd_ >= 0)
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WriteText(text, static_cast<size_t>(strlen(text)));
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}
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AutoTestFile(const char* test_prefix, const char* text, size_t text_len) {
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Init(test_prefix);
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if (fd_ >= 0)
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WriteText(text, text_len);
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}
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// Destroy test file on scope exit.
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~AutoTestFile() {
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if (fd_ >= 0) {
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close(fd_);
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fd_ = -1;
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}
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}
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// Returns true iff the test file could be created properly.
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// Useful in tests inside EXPECT_TRUE(file.IsOk());
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bool IsOk() {
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return fd_ >= 0;
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}
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// Returns the Posix file descriptor for the test file, or -1
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// If IsOk() returns false. Note: on Windows, this always returns -1.
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int GetFd() {
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return fd_;
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}
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private:
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void Init(const char* test_prefix) {
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fd_ = -1;
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char path_templ[PATH_MAX];
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int ret = snprintf(path_templ, sizeof(path_templ),
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TEMPDIR "/%s-unittest.XXXXXX",
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test_prefix);
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if (ret >= static_cast<int>(sizeof(path_templ)))
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return;
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fd_ = mkstemp(path_templ);
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if (fd_ < 0)
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return;
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unlink(path_templ);
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}
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void WriteText(const char* text, size_t text_len) {
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ssize_t r = HANDLE_EINTR(write(fd_, text, text_len));
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if (r != static_cast<ssize_t>(text_len)) {
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close(fd_);
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fd_ = -1;
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return;
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}
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lseek(fd_, 0, SEEK_SET);
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}
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int fd_;
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};
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} // namespace google_breakpad
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#endif // GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE
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