postMessage_MessagePorts_xsite.sub.window.js

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This WPT test may be referenced by the following Test IDs:
- /webmessaging/postMessage_MessagePorts_xsite.sub.window.html - WPT Dashboard Interop Dashboard

// META: script=/common/get-host-info.sub.js

async_test(function(t) {

    var host = get_host_info();

    var noteSameSiteURL = host.HTTP_NOTSAMESITE_ORIGIN + "/webmessaging/support/ChildWindowPostMessage.htm";

    var TOTALPORTS = 100;

    var LocalPorts = [];

    var RemotePorts = [];

    var PassedResult = 0;

    var sum = 0;

    let iframe = document.createElement('iframe');

    iframe.src = noteSameSiteURL;

    document.body.appendChild(iframe);

    var TARGET = document.querySelector("iframe").contentWindow;

    iframe.onload = t.step_func(function() {

        assert_own_property(window, "MessageChannel", "window");

        var channels = [];

        for (var i=0; i<TOTALPORTS; i++)

            channels[i] = new MessageChannel();

            LocalPorts[i] = channels[i].port1;

            LocalPorts[i].foo = i;

            RemotePorts[i] = channels[i].port2;

            LocalPorts[i].onmessage = t.step_func(function(e)

                assert_equals(e.target.foo, e.data);

                PassedResult++;

                sum += e.data;

                if (PassedResult == TOTALPORTS)

                    assert_equals(sum, 4950);

                    t.done();

});

        // Sending in two batches, to test the two postMessage variants.

        var firstBatch = RemotePorts.slice(0, 50);

        var secondBatch = RemotePorts.slice(50, 100);

        TARGET.postMessage("ports", "*", firstBatch);

        TARGET.postMessage("ports", {targetOrigin: '*', transfer: secondBatch});

});

    var counter = 0;

    window.onmessage = function(e)

        if (e.data === "ports")

            if (counter == 0) {

                for (var i=0; i<51; i++)

                    LocalPorts[i].postMessage(LocalPorts[i].foo);

                counter = 1;

            } else {

                for (var i=51; i<100; i++)

                    LocalPorts[i].postMessage(LocalPorts[i].foo);

}, "Test Description: postMessage to cross-site iframe with MessagePort array containing 100 ports.");