| // 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 |