[NaCl SDK] Messaging example (demonstrates postMessageAndAwaitResponse)

native_client_sdk/src/examples/api/messaging/test.js

Index: native_client_sdk/src/examples/api/messaging/test.js
diff --git a/native_client_sdk/src/examples/api/messaging/test.js b/native_client_sdk/src/examples/api/messaging/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..dbcecfd867370161738c912bd9fd0a47aa36a465
--- /dev/null
+++ b/native_client_sdk/src/examples/api/messaging/test.js
@@ -0,0 +1,65 @@
+// Copyright 2014 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.
+
+function addTests() {
+  var currentTest = null;
+
+  function dispatchClick(id) {
+    currentTest.log('Clicking button "' + id + '".');
+    $(id).dispatchEvent(new MouseEvent('click'));
+  }
+
+  function setInputValue(id, value) {
+    currentTest.log('Setting input box "' + id + '" to "' + value + '".');
+    $(id).value = value;
+  }
+
+  function clearResult() {
+    $('result').textContent = '';
+  }
+
+  function getResult() {
+    return $('result').textContent;
+  }
+
+  function waitForResult(expected) {
+    var intervalId = window.setInterval(function() {
+      var actual = parseInt(getResult());
+
+      if (result === '') {
+        currentTest.log('No result yet, waiting.');
+        return;
+      }
+
+      // Got a result.
+      window.clearInterval(intervalId);
+
+      if (actual === expected) {
+        currentTest.log('Got expected value (' + expected + ').');
+        currentTest.pass();
+      } else {
+        currentTest.fail('Unexpected value ' + actual + ', expected ' +
+                         expected);
+      }
+    }, 100);
+  }
+
+  common.tester.addAsyncTest('async_message', function(test) {
+    currentTest = test;
+    clearResult();
+    setInputValue('addend1', 1234);
+    setInputValue('addend2', 2345);
+    dispatchClick('addAsync');
+    waitForResult(3579);
+  });
+
+  common.tester.addAsyncTest('sync_message', function(test) {
+    currentTest = test;
+    clearResult();
+    setInputValue('addend1', 42);
+    setInputValue('addend2', 314);
+    dispatchClick('addSync');
+    waitForResult(356);
+  });
+}