third_party/WebKit/LayoutTests/fast/dom/Window/window-postmessage-args.html

   1 <html>
   2 <head>
   3 <script src="../../../resources/js-test.js"></script>
   4 </head>
   5 <body>
   6 <script>
   7 description("Test window.postMessage() argument handling.");
   8
   9 self.jsTestIsAsync = true;
  10
  11 if (window.testRunner) {
  12     testRunner.dumpAsText();
  13     testRunner.waitUntilDone();
  14 }
  15
  16 function onmessage(evt) {
  17     if (evt.ports)
  18         debug("Received message '" + evt.data + "' with " + evt.ports.length + " ports.");
  19     else
  20         debug("Received message '" + evt.data);
  21
  22     if (evt.data == 'done')
  23         finishJSTest();
  24 }
  25
  26 window.addEventListener('message', onmessage, false);
  27
  28 function tryPostMessageFunction(postMessageFunction, first, second, third, shouldFail) {
  29     var pass, reason;
  30     try {
  31         postMessageFunction(first, second, third);
  32         pass = !shouldFail;
  33         reason = " did not throw an exception";
  34     } catch (e) {
  35         pass = shouldFail;
  36         reason = ": threw exception " + e;
  37     }
  38     if (pass)
  39         testPassed("Posting message ('" + first + "', " + third + ")" + reason);
  40     else
  41         testFailed("Posting message ('" + first + "', " + third + ")" + reason);
  42 }
  43
  44 function tryPostMessage(first, second, third, shouldFail) {
  45     tryPostMessageFunction(window.postMessage, first, second, third, shouldFail);
  46 }
  47
  48 document.getElementById("description").innerHTML = "Test that the second argument of window.postMessage is ignored or triggers an error if it is not a message port. You should see PASS message '1' through '7', followed by 'done', with messages 4-7 received below.<br><br>";
  49
  50 tryPostMessage('1', '*', 1, true);
  51 tryPostMessage('2', '*', 'c', true); // Legacy overload resolution will consider 3rd argument to be the (string) origin.
  52 tryPostMessage('3', '*', { x: 1 }, true);
  53 tryPostMessage('3a', { x: 1 }, '*', true); // Legacy argument order.
  54 tryPostMessage('4', '*', window);  // Passes because window has a "length" attribute of value '0', so it looks like an array
  55 tryPostMessage('4a', window, '*'); // Legacy argument order.
  56 tryPostMessage('5', '*', null);
  57 tryPostMessage('6', '*', void 0);
  58 var channel1 = new MessageChannel;
  59 tryPostMessageFunction(window.postMessage, '7', '*', [channel1.port1, channel1.port2]);
  60 var channel1a = new MessageChannel;
  61 tryPostMessageFunction(window.postMessage, '7a', [channel1a.port1, channel1a.port2], '*');
  62 var channel2 = new MessageChannel;
  63 tryPostMessageFunction(window.postMessage, '7', '*', [channel2.port1, channel2.port2]);
  64 var channel3 = new MessageChannel;
  65 tryPostMessage(2147483648, '*', null);
  66 tryPostMessageFunction(window.postMessage, channel3.port1, '*', [channel3.port1, channel3.port2]);
  67 var channel4 = new MessageChannel;
  68 tryPostMessageFunction(window.postMessage, channel4.port1, '*', [channel4.port1, channel4.port2]);
  69 var channel5 = new MessageChannel;
  70 tryPostMessageFunction(window.postMessage, [channel5.port1, channel5.port2], '*', [channel5.port1, channel5.port2]);
  71 tryPostMessageFunction(window.postMessage, 'data', '*', [channel5.port1, channel5.port2], true);
  72 tryPostMessageFunction(window.postMessage, [channel5.port1, channel5.port2], '*', [], true);
  73
  74 var arrayBuffer = new ArrayBuffer(30);
  75 var int8View = new Int8Array(arrayBuffer, 2, 10);
  76 tryPostMessageFunction(window.postMessage, arrayBuffer, '*', [arrayBuffer]);
  77 if (!(arrayBuffer.byteLength === 0))
  78     testFailed("arrayBuffer not neutered; byteLength = " + arrayBuffer.byteLength);
  79 else
  80     testPassed("arrayBuffer neutered");
  81
  82 if (!(int8View.length == 0))
  83     testFailed("view was not neutered; length = " + int8View.length);
  84 else
  85     testPassed("view neutered");
  86
  87 tryPostMessageFunction(window.postMessage, arrayBuffer, '*', [], true);
  88 tryPostMessageFunction(window.postMessage, 'data', '*', [arrayBuffer], true);
  89
  90 tryPostMessageFunction(window.postMessage, int8View, '*', [], true);
  91 tryPostMessageFunction(window.postMessage, 'data', '*', [int8View], true);
  92
  93 tryPostMessageFunction(window.postMessage, 'data', '*', {length:1}, true);
  94 tryPostMessageFunction(window.postMessage, 'data', '*', [1,,2], true);
  95 tryPostMessageFunction(window.postMessage, 'data', '*', [null, window.postMessage], true);
  96
  97 shouldThrow("window.postMessage()");
  98 shouldThrow("window.postMessage('a')");
  99
 100 tryPostMessageFunction(window.postMessage, 'done', '*');
 101 </script>
 102 </body>
 103 </html>