Disk cache: Add a unit test that instantiates three caches...

net/disk_cache/disk_cache_test_util.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 #define NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_
 
 #include <string>
 
 #include "base/file_path.h"
@@ skipping 20 matching lines @@
 std::string GenerateKey(bool same_length);
 
 // Returns true if the cache is not corrupt.
 bool CheckCacheIntegrity(const std::wstring& path);
 
 // Helper class which ensures that the cache dir returned by GetCachePath exists
 // and is clear in ctor and that the directory gets deleted in dtor.
 class ScopedTestCache {
  public:
   ScopedTestCache();
+  ScopedTestCache(const std::wstring& name);  // Use a specific folder name.
   ~ScopedTestCache();
 
   FilePath path() const { return FilePath::FromWStringHack(path_); }
   std::wstring path_wstring() const { return path_; }
 
  private:
   const std::wstring path_;  // Path to the cache test folder.
 
   DISALLOW_COPY_AND_ASSIGN(ScopedTestCache);
 };
@@ skipping 40 matching lines @@
   base::RepeatingTimer<MessageLoopHelper> timer_;
   int num_callbacks_;
   int num_iterations_;
   int last_;
   bool completed_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageLoopHelper);
 };
 
 #endif  // NET_DISK_CACHE_DISK_CACHE_TEST_UTIL_H_