gdata: Upload locally modified file in the correct size.

chrome/browser/chromeos/gdata/gdata_file_system_unittest.cc

 // Copyright (c) 2012 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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 2278 matching lines @@
                 test_util::TEST_CACHE_STATE_DIRTY |
                 test_util::TEST_CACHE_STATE_PERSISTENT,
                 GDataCache::CACHE_TYPE_PERSISTENT);
   const FilePath dirty_cache_file_path =
       GDataCache::GetCacheRootPath(profile_.get())
       .AppendASCII("persistent")
       .AppendASCII(kResourceId + ".local");
   ASSERT_FALSE(file_util::PathExists(original_cache_file_path));
   ASSERT_TRUE(file_util::PathExists(dirty_cache_file_path));
 
+  // Modify the cached file.
+  const std::string kDummyCacheContent("modification to the cache");
+  ASSERT_TRUE(file_util::WriteFile(dirty_cache_file_path,
+                                   kDummyCacheContent.c_str(),
+                                   kDummyCacheContent.size()));
+
   // Commit the dirty bit. The cache file name remains the same
   // but a symlink will be created at:
   // GCache/v1/outgoing/<kResourceId>
   EXPECT_CALL(*mock_cache_observer_, OnCacheCommitted(kResourceId)).Times(1);
   TestCommitDirty(kResourceId,
                   kMd5,
                   GDATA_FILE_OK,
                   test_util::TEST_CACHE_STATE_PRESENT |
                   test_util::TEST_CACHE_STATE_PINNED |
                   test_util::TEST_CACHE_STATE_DIRTY |
@@ skipping 27 matching lines @@
       }
     }
   }
   ASSERT_TRUE(document_entry);
 
   // The mock uploader will be used to simulate a file upload.
   EXPECT_CALL(*mock_uploader_, UploadExistingFile(
       GURL("https://file_link_resumable_edit_media/"),
       kFilePath,
       dirty_cache_file_path,
-      892721,  // The size is written in the root_feed.json.
+      kDummyCacheContent.size(),  // The size after modification must be used.
       "audio/mpeg",
       _))  // callback
       .WillOnce(MockUploadExistingFile(
           GDATA_FILE_OK,
           FilePath::FromUTF8Unsafe("drive/File1"),
           dirty_cache_file_path,
           document_entry));
 
   // We'll notify the directory change to the observer upon completion.
   EXPECT_CALL(*mock_directory_observer_,
@@ skipping 193 matching lines @@
 
   // Try to close the same file twice.
   file_system_->CloseFile(kFileInRoot, close_file_callback);
   message_loop_.Run();
 
   // It must fail.
   EXPECT_EQ(GDATA_FILE_ERROR_NOT_FOUND, callback_helper_->last_error_);
 }
 
 }   // namespace gdata