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LibWeb: Add a basic MessageChannel test
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<script src="../include.js"></script>
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<script>
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asyncTest(done => {
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let channel = new MessageChannel();
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channel.port1.onmessage = (event) => {
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println("Port1: " + JSON.stringify(event.data));
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channel.port1.postMessage(event.data);
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};
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channel.port2.onmessage = (event) => {
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println("Port2: " + JSON.stringify(event.data));
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if (event.data === "DONE") {
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done();
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}
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};
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// FIXME: These should be output in the order: Port1: A, Port2: A, Port1: B, Port2: B, ...
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println("FIXME: Order of messages is incorrect");
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channel.port2.postMessage("Hello");
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channel.port2.postMessage({ foo: "bar", baz: [ 1, 2, 3, 4 ] });
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channel.port2.postMessage("DONE");
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});
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</script>
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