// 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