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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/linux/tests/auto_testfile.h')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/linux/tests/auto_testfile.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/linux/tests/auto_testfile.h b/toolkit/crashreporter/google-breakpad/src/common/linux/tests/auto_testfile.h new file mode 100644 index 000000000..92fe017b9 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/linux/tests/auto_testfile.h @@ -0,0 +1,124 @@ +// Copyright (c) 2013, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Utility class for creating a temporary file for unit tests +// that is deleted in the destructor. + +#ifndef GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE +#define GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE + +#include <unistd.h> +#include <sys/types.h> + +#include <string> + +#include "breakpad_googletest_includes.h" +#include "common/linux/eintr_wrapper.h" +#include "common/tests/auto_tempdir.h" + +namespace google_breakpad { + +class AutoTestFile { + public: + // Create a new empty test file. + // test_prefix: (input) test-specific prefix, can't be NULL. + explicit AutoTestFile(const char* test_prefix) { + Init(test_prefix); + } + + // Create a new test file, and fill it with initial data from a C string. + // The terminating zero is not written. + // test_prefix: (input) test-specific prefix, can't be NULL. + // text: (input) initial content. + AutoTestFile(const char* test_prefix, const char* text) { + Init(test_prefix); + if (fd_ >= 0) + WriteText(text, static_cast<size_t>(strlen(text))); + } + + AutoTestFile(const char* test_prefix, const char* text, size_t text_len) { + Init(test_prefix); + if (fd_ >= 0) + WriteText(text, text_len); + } + + // Destroy test file on scope exit. + ~AutoTestFile() { + if (fd_ >= 0) { + close(fd_); + fd_ = -1; + } + } + + // Returns true iff the test file could be created properly. + // Useful in tests inside EXPECT_TRUE(file.IsOk()); + bool IsOk() { + return fd_ >= 0; + } + + // Returns the Posix file descriptor for the test file, or -1 + // If IsOk() returns false. Note: on Windows, this always returns -1. + int GetFd() { + return fd_; + } + + private: + void Init(const char* test_prefix) { + fd_ = -1; + char path_templ[PATH_MAX]; + int ret = snprintf(path_templ, sizeof(path_templ), + TEMPDIR "/%s-unittest.XXXXXX", + test_prefix); + if (ret >= static_cast<int>(sizeof(path_templ))) + return; + + fd_ = mkstemp(path_templ); + if (fd_ < 0) + return; + + unlink(path_templ); + } + + void WriteText(const char* text, size_t text_len) { + ssize_t r = HANDLE_EINTR(write(fd_, text, text_len)); + if (r != static_cast<ssize_t>(text_len)) { + close(fd_); + fd_ = -1; + return; + } + + lseek(fd_, 0, SEEK_SET); + } + + int fd_; +}; + +} // namespace google_breakpad + +#endif // GOOGLE_BREAKPAD_COMMON_LINUX_TESTS_AUTO_TESTFILE |