google_apis: Implement DownloadFile in FakeDriveService

chrome/browser/google_apis/fake_drive_service.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/google_apis/fake_drive_service.h"
 
+#include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
 #include "chrome/browser/google_apis/gdata_wapi_parser.h"
 #include "chrome/browser/google_apis/test_util.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace google_apis {
@@ skipping 200 matching lines @@
 }
 
 void FakeDriveService::DownloadFile(
     const FilePath& virtual_path,
     const FilePath& local_cache_path,
     const GURL& content_url,
     const DownloadActionCallback& download_action_callback,
     const GetContentCallback& get_content_callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!download_action_callback.is_null());
+
+  base::DictionaryValue* entry = FindEntryByContentUrl(content_url);
+  if (!entry) {
+    base::MessageLoopProxy::current()->PostTask(
+        FROM_HERE,
+        base::Bind(download_action_callback, HTTP_NOT_FOUND, FilePath()));
+    return;
+  }
+
+  // Write the content URL as the content of the file.
+  if (static_cast<int>(content_url.spec().size()) !=
+      file_util::WriteFile(local_cache_path,
+                           content_url.spec().data(),
+                           content_url.spec().size())) {
+    base::MessageLoopProxy::current()->PostTask(
+        FROM_HERE,
+        base::Bind(download_action_callback, GDATA_FILE_ERROR, FilePath()));
+    return;
+  }
+
+  base::MessageLoopProxy::current()->PostTask(
+      FROM_HERE,
+      base::Bind(download_action_callback, HTTP_SUCCESS, local_cache_path));
 }
 
 void FakeDriveService::CopyHostedDocument(
     const std::string& resource_id,
     const FilePath::StringType& new_name,
     const GetResourceEntryCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   base::DictionaryValue* resource_list_dict = NULL;
@@ skipping 327 matching lines @@
 
   return NULL;
 }
 
 std::string FakeDriveService::GetNewResourceId() {
   ++resource_id_count_;
   return base::StringPrintf("resource_id_%d", resource_id_count_);
 }
 
 }  // namespace google_apis