drive: Call LoadIfNeeded before CreateDirectory.

chrome/browser/chromeos/drive/drive_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 "chrome/browser/chromeos/drive/drive_file_system.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 1467 matching lines @@
       .Times(1);
 
   // Create directory in a sub directory.
   base::FilePath subdir_path(
       FILE_PATH_LITERAL("drive/root/New Folder 1/New Folder 2"));
   EXPECT_FALSE(EntryExists(subdir_path));
   EXPECT_EQ(FILE_ERROR_OK, AddDirectory(subdir_path));
   EXPECT_TRUE(EntryExists(subdir_path));
 }
 
+TEST_F(DriveFileSystemTest, CreateDirectoryByImplicitLoad) {
+  // Intentionally *not* calling LoadRootFeedDocument(), for testing that
+  // CreateDirectory ensures feed loading before it runs.
+
+  base::FilePath existing_directory(
+      FILE_PATH_LITERAL("drive/root/Directory 1"));
+  FileError error = FILE_ERROR_FAILED;
+  file_system_->CreateDirectory(
+      existing_directory,
+      true,  // is_exclusive
+      false,  // is_recursive
+      google_apis::test_util::CreateCopyResultCallback(&error));
+  google_apis::test_util::RunBlockingPoolTask();
+
+  // It should fail because is_exclusive is set to true.
+  EXPECT_EQ(FILE_ERROR_EXISTS, error);
+}
+
 TEST_F(DriveFileSystemTest, PinAndUnpin) {
   ASSERT_TRUE(LoadRootFeedDocument());
 
   base::FilePath file_path(FILE_PATH_LITERAL("drive/root/File 1.txt"));
 
   // Get the file info.
   scoped_ptr<DriveEntryProto> entry(GetEntryInfoByPathSync(file_path));
   ASSERT_TRUE(entry);
 
   // Pin the file.
@@ skipping 676 matching lines @@
       entry->resource_id(),
       entry->file_specific_info().file_md5(),
       google_apis::test_util::CreateCopyResultCallback(&success, &cache_entry));
   google_apis::test_util::RunBlockingPoolTask();
 
   EXPECT_TRUE(success);
   EXPECT_FALSE(cache_entry.is_mounted());
 }
 
 }   // namespace drive