chrome.i18n API (accept languages part 1)

chrome/renderer/extensions/extension_api_client_unittest.cc

 // Copyright (c) 2009 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 "base/path_service.h"
 #include "base/string_util.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/renderer/extensions/extension_process_bindings.h"
@@ skipping 570 matching lines @@
   ExpectJsFail("chrome.toolstrip.collapse(1)",
                "Uncaught Error: Invalid value for argument 0. "
                "Expected 'object' but got 'integer'.");
   ExpectJsFail("chrome.toolstrip.collapse(100)",
                "Uncaught Error: Invalid value for argument 0. "
                "Expected 'object' but got 'integer'.");
   ExpectJsFail("chrome.toolstrip.collapse({url:'http://foo/'}, 32)",
                "Uncaught Error: Invalid value for argument 1. "
                "Expected 'function' but got 'integer'.");
 }
+
+// I18N API
+TEST_F(ExtensionAPIClientTest, GetAcceptLanguages) {
+  ExpectJsFail("chrome.i18n.getAcceptLanguages(32, function(){})",
+               "Uncaught Error: Too many arguments.");
+
+  ExpectJsFail("chrome.i18n.getAcceptLanguages()",
+               "Uncaught Error: Parameter 0 is required.");
+
+  ExpectJsFail("chrome.i18n.getAcceptLanguages('abc')",
+               "Uncaught Error: Invalid value for argument 0. "
+               "Expected 'function' but got 'string'.");
+
+  ExpectJsPass("chrome.i18n.getAcceptLanguages(function(){})",
+               "i18n.getAcceptLanguages", "null");
+}