chrome/test/data/extensions/api_test/idltest/binary_data/binary.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 var assertEq = chrome.test.assertEq;
   6 var assertTrue = chrome.test.assertTrue;
   7 var callbackPass = chrome.test.callbackPass;
   8
   9 function makeCompareCallback(buf) {
  10   return function(array) {
  11     assertEq(buf.byteLength, array.length);
  12     for (var i = 0; i < buf.length; i++) {
  13       assertEq(buf[i], array[i]);
  14     }
  15   };
  16 }
  17
  18 function makeBuffer() {
  19   var bufferSize = 128;
  20   var ab = new ArrayBuffer(bufferSize);
  21   var view = new Uint8Array(ab);
  22   for (var i = 0; i < bufferSize; i++) {
  23     view[i] = i+3;
  24   }
  25   return view;
  26 }
  27
  28 var tests = [
  29   function sendBuffer() {
  30     var view = makeBuffer();
  31     chrome.idltest.sendArrayBuffer(
  32         view.buffer, callbackPass(makeCompareCallback(view.buffer)));
  33   },
  34
  35   function sendBufferView() {
  36     var view = makeBuffer();
  37     chrome.idltest.sendArrayBufferView(
  38         view, callbackPass(makeCompareCallback(view.buffer)));
  39   },
  40
  41   function sendBufferSlice() {
  42     var view = makeBuffer();
  43     var bufferSlice = view.buffer.slice(64);
  44     assertEq(64, bufferSlice.byteLength);
  45     chrome.idltest.sendArrayBuffer(
  46         bufferSlice, callbackPass(makeCompareCallback(bufferSlice)));
  47   },
  48
  49   function getBuffer() {
  50     chrome.idltest.getArrayBuffer(callbackPass(function(buffer) {
  51       assertTrue(buffer.__proto__ == (new ArrayBuffer()).__proto__);
  52       var view = new Uint8Array(buffer);
  53       var expected = "hello world";
  54       assertEq(view.byteLength, expected.length);
  55       for (var i = 0; i < view.byteLength; i++) {
  56         assertTrue(expected[i] == String.fromCharCode(view[i]));
  57       }
  58     }));
  59   }
  60 ];
  61
  62 chrome.test.runTests(tests);