third_party/WebKit/LayoutTests/fast/events/resources/message-port-multi.js

   1 if (window.testRunner) {
   2     testRunner.dumpAsText();
   3     testRunner.waitUntilDone();
   4 }
   5
   6 description("This test checks the various use cases around sending multiple ports through MessagePort.postMessage");
   7
   8 var channel = new MessageChannel();
   9 var channel2 = new MessageChannel();
  10 var channel3 = new MessageChannel();
  11 var channel4 = new MessageChannel();
  12
  13 shouldThrow("channel.port1.postMessage()");
  14
  15 channel.port1.postMessage("noport");
  16 channel.port1.postMessage("zero ports", []);
  17 channel.port1.postMessage("two ports", [channel2.port1, channel2.port2]);
  18
  19 // Now test various failure cases
  20 shouldThrow('channel.port1.postMessage("same port", [channel.port1])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Port at index 0 contains the source port."');
  21 shouldThrow('channel.port1.postMessage("null port", [channel3.port1, null, channel3.port2])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 is an untransferable \'null\' value."');
  22 shouldThrow('channel.port1.postMessage("notAPort", [channel3.port1, {}, channel3.port2])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 does not have a transferable type."');
  23 shouldThrow('channel.port1.postMessage("duplicate port", [channel3.port1, channel3.port1])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Message port at index 1 is a duplicate of an earlier port."');
  24 // Should be OK to send channel3.port1 (should not have been disentangled by the previous failed calls).
  25 channel.port1.postMessage("entangled ports", [channel3.port1, channel3.port2]);
  26
  27 shouldThrow('channel.port1.postMessage("notAnArray", channel3.port1)', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': The 2nd argument is neither an array, nor does it have indexed properties."');
  28 shouldThrow('channel.port1.postMessage("notASequence", [{length: 3}])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 does not have a transferable type."');
  29 var arrayBuffer = new ArrayBuffer(2);
  30 shouldThrow('channel.port1.postMessage("duplicate buffer", [arrayBuffer, arrayBuffer])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': ArrayBuffer at index 1 is a duplicate of an earlier ArrayBuffer."');
  31
  32 // Should not crash (we should figure out that the array contains undefined
  33 // entries).
  34 var largePortArray = [];
  35 largePortArray[1234567890] = channel4.port1;
  36 shouldThrow('channel.port1.postMessage("largeSequence", largePortArray)', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 is an untransferable \'undefined\' value."');
  37
  38 channel.port1.postMessage("done");
  39
  40 function testTransfers() {
  41     var channel0 = new MessageChannel();
  42
  43     var c1 = new MessageChannel();
  44     channel0.port1.postMessage({id:"send-port", port:c1.port1}, [c1.port1]);
  45     var c2 = new MessageChannel();
  46     channel0.port1.postMessage({id:"send-port-twice", port0:c2.port1, port1:c2.port1}, [c2.port1]);
  47     var c3 = new MessageChannel();
  48     channel0.port1.postMessage({id:"send-two-ports", port0:c3.port1, port1:c3.port2}, [c3.port1, c3.port2]);
  49     var c4 = new MessageChannel();
  50     try {
  51         channel0.port1.postMessage({id:"host-object", hostObject:c3, port:c4.port1}, [c4.port1]);
  52         testFailed("Sending host object should throw");
  53     } catch(e) {
  54         if (e.code == DOMException.DATA_CLONE_ERR)
  55           testPassed("Sending host object has thrown " + e);
  56         else
  57           testFailed("Sending host object should throw a DataCloneError, got: " + e);
  58     }
  59     try {
  60         channel0.port1.postMessage({id:"host-object2", hostObject:navigator, port:c4.port1}, [c4.port1]);
  61         testFailed("Sending host object should throw");
  62     } catch(e) {
  63         if (e.code == DOMException.DATA_CLONE_ERR)
  64           testPassed("Sending host object has thrown " + e);
  65         else
  66           testFailed("Sending host object should throw a DataCloneError, got: " + e);
  67     }
  68     try {
  69         var f1 = function() {}
  70         channel0.port1.postMessage({id:"function-object", function:f1, port:c4.port1}, [c4.port1]);
  71         testFailed("Sending Function object should throw");
  72     } catch(e) {
  73         if (e.code == DOMException.DATA_CLONE_ERR)
  74           testPassed("Sending Function object has thrown " + e);
  75         else
  76           testFailed("Sending Function object should throw a DataCloneError, got: " + e);
  77     }
  78     try {
  79         var err = new Error();
  80         channel0.port1.postMessage({id:"error-object", error:err, port:c4.port1}, [c4.port1]);
  81         testFailed("Sending Error object should throw");
  82     } catch(e) {
  83         if (e.code == DOMException.DATA_CLONE_ERR)
  84           testPassed("Sending Error object has thrown " + e);
  85         else
  86           testPassed("Sending Error object should throw a DataCloneError, got: " + e);
  87     }
  88     c4.port1.postMessage("Should succeed");
  89     channel0.port1.postMessage({id:"done"});
  90
  91     channel0.port2.onmessage = function(event) {
  92         if (event.data.id == "send-port") {
  93             if (event.ports && event.ports.length > 0 && event.ports[0] === event.data.port)
  94                 testPassed("send-port: transferred one port");
  95             else
  96                 testFailed("send-port: port transfer failed");
  97         } else if (event.data.id == "send-port-twice") {
  98             if (event.ports && event.ports.length == 1 &&
  99                   event.ports[0] === event.data.port0 && event.ports[0] === event.data.port1)
 100                 testPassed("send-port-twice: transferred one port twice");
 101             else
 102                 testFailed("send-port-twice: failed to transfer one port twice");
 103         } else if (event.data.id == "send-two-ports") {
 104             if (event.ports && event.ports.length == 2 &&
 105                   event.ports[0] === event.data.port0 && event.ports[1] === event.data.port1)
 106                 testPassed("send-two-ports: transferred two ports");
 107             else
 108                 testFailed("send-two-ports: failed to transfer two ports");
 109         } else if (event.data.id == "done") {
 110             debug('<br><span class="pass">TEST COMPLETE</span>');
 111             if (window.testRunner)
 112             testRunner.notifyDone();
 113         } else {
 114             testFailed("Unexpected message " + event.data);
 115         }
 116     }
 117 }
 118
 119 channel.port2.onmessage = function(event) {
 120     if (event.data == "noport") {
 121         if (event.ports && !event.ports.length)
 122             testPassed("event.ports is non-null and zero length when no port sent");
 123         else
 124             testFailed("event.ports is null or non-zero length when no port sent");
 125     } else if (event.data == "zero ports") {
 126         if (event.ports && !event.ports.length)
 127             testPassed("event.ports is non-null and zero length when empty array sent");
 128         else
 129             testFailed("event.ports is null or non-zero length when empty array sent");
 130     } else if (event.data == "two ports") {
 131         if (!event.ports) {
 132             testFailed("event.ports should be non-null when ports sent");
 133             return;
 134         }
 135         if (event.ports.length == 2)
 136             testPassed("event.ports contains two ports when two ports sent");
 137         else
 138             testFailed("event.ports contained " + event.ports.length + " when two ports sent");
 139
 140     } else if (event.data == "entangled ports") {
 141         if (event.ports.length == 2)
 142             testPassed("event.ports contains two ports when two ports re-sent after error");
 143         else
 144             testFailed("event.ports contained " + event.ports.length + " when two ports re-sent after error");
 145     } else if (event.data == "done") {
 146         testTransfers();
 147     } else
 148         testFailed("Received unexpected message: " + event.data);
 149 }