testing/web-platform/tests/html/infrastructure/safe-passing-of-structured-data/structured_clone_bigint.html

   1 <!doctype html>
   2 <html>
   3  <head>
   4   <meta content="text/html; charset=utf-8" http-equiv="content-type" />
   5   <title>2.7 Safe passing of structured data</title>
   6   <link rel="help" href="https://html.spec.whatwg.org/multipage/#safe-passing-of-structured-data" />
   7   <script src="/resources/testharness.js"></script>
   8   <script src="/resources/testharnessreport.js"></script>
   9 </head>
  10 <body>
  11  <div id="log"></div>
  12
  13 <script type="text/javascript">
  14     // Note, this test is designed to be in a similar style to
  15     // html/infrastructure/safe-passing-of-structured-data/structuredclone_0.html
  16     // It is in a separate file to avoid causing a syntax error on UAs which
  17     // do not yet support BigInt, so the rest of the test can continue running.
  18
  19     var worker;
  20     var testCollection;
  21     setup(function()
  22     {
  23         //the worker is used for each test in sequence
  24         //worker's callback will be set for each test
  25         //worker's internal onmessage echoes the data back to this thread through postMessage
  26         worker = new Worker("./resources/echo-worker.js");
  27         testCollection = [
  28             function() {
  29                 var t = async_test("Primitive BigInt is cloned");
  30                 t.id = 0;
  31                 worker.onmessage = t.step_func(function(e) {assert_equals(1n, e.data, "1n === event.data"); t.done(); });
  32                 t.step(function() { worker.postMessage(1n);});
  33             },
  34             function() {
  35                 var t = async_test("Instance of BigInt is cloned");
  36                 t.id = 1;
  37                 var obj;
  38                 t.step(function() {obj = Object(1n);});
  39                 worker.onmessage = t.step_func(function(e) {
  40                     assert_equals(obj.constructor, e.data.constructor, "BigInt === event.data.constructor");
  41                     assert_equals(obj.valueOf(), e.data.valueOf(), "(BigInt(1n)).valueOf() === event.data.valueOf()");
  42                     t.done();
  43                 });
  44                 t.step(function() { worker.postMessage(obj);});
  45             },
  46         ];
  47     }, {explicit_done:true});
  48
  49     //Callback for result_callback
  50     //queues the next test in the array testCollection
  51     //serves to make test execution sequential from the async worker callbacks
  52     //alternatively, we would have to create a worker for each test
  53     function testFinished(test) {
  54         if(test.id < testCollection.length - 1) {
  55             //queue the function so that stack remains shallow
  56             queue(testCollection[test.id+1]);
  57         } else {
  58             //when the last test has run, explicitly end test suite
  59             done();
  60         }
  61     }
  62     function queue(func) {
  63         step_timeout(func, 10);
  64     }
  65
  66     add_result_callback(testFinished);
  67     //start the first test manually
  68     queue(testCollection[0]);
  69
  70
  71
  72
  73  </script>
  74 </body>
  75 </html>
  76