Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/tests/ppapi_browser/ppb_scrollbar/ppapi_ppb_scrollbar.js

Index: ppapi/native_client/tests/ppapi_browser/ppb_scrollbar/ppapi_ppb_scrollbar.js
===================================================================
--- ppapi/native_client/tests/ppapi_browser/ppb_scrollbar/ppapi_ppb_scrollbar.js	(revision 0)
+++ ppapi/native_client/tests/ppapi_browser/ppb_scrollbar/ppapi_ppb_scrollbar.js	(revision 0)
@@ -0,0 +1,40 @@
+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function setupTests(tester, plugin) {
+  // This function takes an array of messages and asserts that the nexe
+  // calls PostMessage with each of these messages, in order.
+  function expectMessages(test, plugin, messages) {
+    test.assert(messages.length > 0, 'Must provide at least one message');
+    var listener = test.wrap(function(message) {
+      plugin.removeEventListener('message', listener, false);
+      test.assertEqual(message.data, messages.shift());
+      if (messages.length == 0) {
+        test.pass();
+      } else {
+        plugin.addEventListener('message', listener, false);
+      }
+    });
+    plugin.addEventListener('message', listener, false);
+  }
+
+  function addTest(test_name, responses) {
+    if (responses === undefined) {
+      responses = [];
+    }
+    var expected_messages = [test_name + ':PASSED'];
+    expected_messages.concat(responses);
+    tester.addAsyncTest('PPB_Scrollbar::' + test_name, function(test) {
+      expectMessages(test, plugin, expected_messages);
+      plugin.postMessage(test_name)
+    });
+  }
+
+  addTest('TestCreate');
+  addTest('TestGetThickness');
+  addTest('TestValue');
+  addTest('TestSetDocumentSize');
+  addTest('TestSetTickMarks');
+  addTest('TestScrollBy');
+}