Disk cache: Read the index and data_0 files in a single...

net/disk_cache/block_files_unittest.cc

 // 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.
 
 #include "base/file_util.h"
 #include "net/disk_cache/block_files.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/disk_cache_test_base.h"
 #include "net/disk_cache/disk_cache_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 185 matching lines @@
   memset(header, 'a', kBlockHeaderSize);
   EXPECT_EQ(kBlockHeaderSize,
             file_util::WriteFile(filename, header, kBlockHeaderSize));
 
   EXPECT_TRUE(NULL == files.GetFile(addr));
 
   // The file should not have been cached (it is still invalid).
   EXPECT_TRUE(NULL == files.GetFile(addr));
 }
 
+// Tests that we generate the correct file stats.
+TEST_F(DiskCacheTest, BlockFiles_Stats) {
+  ASSERT_TRUE(CopyTestCache("remove_load1"));
+  FilePath path = GetCacheFilePath();
+
+  BlockFiles files(path);
+  ASSERT_TRUE(files.Init(false));
+  int used, load;
+
+  files.GetFileStats(0, &used, &load);
+  EXPECT_EQ(101, used);
+  EXPECT_EQ(9, load);
+
+  files.GetFileStats(1, &used, &load);
+  EXPECT_EQ(203, used);
+  EXPECT_EQ(19, load);
+
+  files.GetFileStats(2, &used, &load);
+  EXPECT_EQ(0, used);
+  EXPECT_EQ(0, load);
+}
+
 }  // namespace disk_cache