GTTF: Make net_unittests run successfully with parallel test launcher

net/disk_cache/disk_cache_test_util.cc

 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/disk_cache/disk_cache_test_util.h"
 
 #include "base/logging.h"
 #include "base/file_util.h"
 #include "base/message_loop_proxy.h"
 #include "base/path_service.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/cache_util.h"
 #include "net/disk_cache/file.h"
 
 using base::Time;
 using base::TimeDelta;
 
-namespace {
-
-FilePath BuildCachePath(const std::string& name) {
-  FilePath path;
-  PathService::Get(base::DIR_TEMP, &path);  // Ignore return value;
-  path = path.AppendASCII(name);
-  if (!file_util::PathExists(path))
-    file_util::CreateDirectory(path);
-
-  return path;
-}
-
-}  // namespace.
-
 std::string GenerateKey(bool same_length) {
   char key[200];
   CacheTestFillBuffer(key, sizeof(key), same_length);
 
   key[199] = '\0';
   return std::string(key);
 }
 
 void CacheTestFillBuffer(char* buffer, size_t len, bool no_nulls) {
   static bool called = false;
   if (!called) {
     called = true;
     int seed = static_cast<int>(Time::Now().ToInternalValue());
     srand(seed);
   }
 
   for (size_t i = 0; i < len; i++) {
     buffer[i] = static_cast<char>(rand());
     if (!buffer[i] && no_nulls)
       buffer[i] = 'g';
   }
   if (len && !buffer[0])
     buffer[0] = 'g';
 }
 
-FilePath GetCacheFilePath() {
-  return BuildCachePath("cache_test");
-}
-
 bool CreateCacheTestFile(const FilePath& name) {
   int flags = base::PLATFORM_FILE_CREATE_ALWAYS |
               base::PLATFORM_FILE_READ |
               base::PLATFORM_FILE_WRITE;
 
   scoped_refptr<disk_cache::File> file(new disk_cache::File(
       base::CreatePlatformFile(name, flags, NULL, NULL)));
   if (!file->IsValid())
     return false;
 
   file->SetLength(4 * 1024 * 1024);
   return true;
 }
 
 bool DeleteCache(const FilePath& path) {
   disk_cache::DeleteCache(path, false);
   return true;
 }
 
-bool CopyTestCache(const std::string& name) {
+bool CopyTestCache(const std::string& name, const FilePath& destination) {
   FilePath path;
   PathService::Get(base::DIR_SOURCE_ROOT, &path);
   path = path.AppendASCII("net");
   path = path.AppendASCII("data");
   path = path.AppendASCII("cache_tests");
   path = path.AppendASCII(name);
 
-  FilePath dest = GetCacheFilePath();
-  if (!DeleteCache(dest))
+  if (!DeleteCache(destination))
     return false;
-  return file_util::CopyDirectory(path, dest, false);
+  return file_util::CopyDirectory(path, destination, false);
 }
 
 bool CheckCacheIntegrity(const FilePath& path, bool new_eviction) {
   scoped_ptr<disk_cache::BackendImpl> cache(new disk_cache::BackendImpl(
       path, base::MessageLoopProxy::CreateForCurrentThread()));
   if (!cache.get())
     return false;
   if (new_eviction)
     cache->SetNewEviction();
   cache->SetFlags(disk_cache::kNoRandom);
   if (cache->SyncInit() != net::OK)
     return false;
   return cache->SelfCheck() >= 0;
 }
 
-ScopedTestCache::ScopedTestCache() : path_(GetCacheFilePath()) {
-  bool result = DeleteCache(path_);
-  DCHECK(result);
-}
-
-ScopedTestCache::ScopedTestCache(const std::string& name)
-    : path_(BuildCachePath(name)) {
-  bool result = DeleteCache(path_);
-  DCHECK(result);
+ScopedTestCache::ScopedTestCache() {
+  temp_dir_.CreateUniqueTempDir();
 }
 
 ScopedTestCache::~ScopedTestCache() {
-  file_util::Delete(path(), true);
 }
 
 // -----------------------------------------------------------------------
 
 volatile int g_cache_tests_received = 0;
 volatile bool g_cache_tests_error = 0;
 
 // On the actual callback, increase the number of tests received and check for
 // errors (an unexpected test received)
 void CallbackTest::RunWithParams(const Tuple1<int>& params) {
@@ skipping 43 matching lines @@
   } else {
     // Not finished yet. See if we have to abort.
     if (last_ == g_cache_tests_received)
       num_iterations_++;
     else
       last_ = g_cache_tests_received;
     if (40 == num_iterations_)
       MessageLoop::current()->Quit();
   }
 }