Add more unit tests for JS bindings to Core

mojo/public/bindings/js/core_unittests.js

+// Copyright 2013 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 runWithPipe(mojo, test) {
+  var pipe = mojo.core.createMessagePipe();
+
+  test(mojo, pipe);
+
+  var result0 = mojo.core.close(pipe.handle0);
+  mojo.gtest.expectEqual(result0, mojo.core.RESULT_OK,
+      "result0 is " + result0);
+
+  var result1 = mojo.core.close(pipe.handle1);
+  mojo.gtest.expectEqual(result1, mojo.core.RESULT_OK,
+      "result1 is " + result1);
+}
+
+function testNop(mojo, pipe) {
+}
+
+function testReadAndWriteMessage(mojo, pipe) {
+  var senderData = new Uint8Array(42);
+  for (var i = 0; i < senderData.length; ++i) {
+    senderData[i] = i * i;
+  }
+
+  var result = mojo.core.writeMessage(
+    pipe.handle0, senderData, [],
+    mojo.core.WRITE_MESSAGE_FLAG_NONE);
+
+  mojo.gtest.expectEqual(result, mojo.core.RESULT_OK,
+    "writeMessage returned RESULT_OK: " + result);
+
+  var receiverData = new Uint8Array(50);
+
+  var mesage = mojo.core.readMessage(
+    pipe.handle1, receiverData, 10,
+    mojo.core.READ_MESSAGE_FLAG_NONE)
+
+  mojo.gtest.expectEqual(mesage.result, mojo.core.RESULT_OK,
+      "mesage.result is " + mesage.result);
+  mojo.gtest.expectEqual(mesage.bytesRead, 42,
+      "mesage.bytesRead is " + mesage.bytesRead);
+  mojo.gtest.expectEqual(mesage.handles.length, 0,
+      "mesage.handles.length is " + mesage.handles.length);
+
+  for (var i = 0; i < mesage.bytesRead; ++i) {
+    mojo.gtest.expectEqual(receiverData[i], (i * i) & 0xFF,
+        "receiverData[" + i + "] is " + receiverData[i]);
+  }
+}
+
+function main(mojo) {
+  runWithPipe(mojo, testNop);
+  runWithPipe(mojo, testReadAndWriteMessage);
+}