Add FileWriteMode::kCreateOrFail

test/scoped_temp_dir_test.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "test/scoped_temp_dir.h"
 
-#include <errno.h>
 #include <fcntl.h>
 #include <string.h>
-#include <sys/stat.h>
 
 #include "base/posix/eintr_wrapper.h"
 #include "build/build_config.h"
 #include "gtest/gtest.h"
 #include "test/errors.h"
+#include "test/file.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 #elif defined(OS_WIN)
 #include <direct.h>
 #include <io.h>
 #endif  // OS_POSIX
 
 namespace crashpad {
 namespace test {
 namespace {
 
-bool FileExists(const base::FilePath& path) {
-#if defined(OS_POSIX)
-  struct stat st;
-  int rv = lstat(path.value().c_str(), &st);
-  const char stat_function[] = "lstat";
-#elif defined(OS_WIN)
-  struct _stat st;
-  int rv = _wstat(path.value().c_str(), &st);
-  const char stat_function[] = "_wstat";
-#else
-#error "Not implemented"
-#endif
-  if (rv < 0) {
-    EXPECT_EQ(ENOENT, errno) << ErrnoMessage(stat_function) << " "
-                             << path.value();
-    return false;
-  }
-  return true;
-}
-
 void CreateFile(const base::FilePath& path) {
 #if defined(OS_POSIX)
   int fd = HANDLE_EINTR(creat(path.value().c_str(), 0644));
   ASSERT_GE(fd, 0) << ErrnoMessage("creat") << " " << path.value();
   ASSERT_EQ(0, IGNORE_EINTR(close(fd)))
       << ErrnoMessage("close") << " " << path.value();
 #elif defined(OS_WIN)
   int fd = _wcreat(path.value().c_str(), _S_IREAD | _S_IWRITE);
   ASSERT_GE(fd, 0) << ErrnoMessage("_wcreat") << " " << path.value();
   ASSERT_EQ(0, _close(fd)) << ErrnoMessage("_close") << " " << path.value();
@@ skipping 66 matching lines @@
 
   EXPECT_FALSE(FileExists(file1));
   EXPECT_FALSE(FileExists(file2));
   EXPECT_FALSE(FileExists(child_dir));
   EXPECT_FALSE(FileExists(parent));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad