test_subdomain.html

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<!doctype html>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<iframe></iframe>

<script>

  async function testFrame(file, expectEnabled) {

    let reply = new Promise(resolve => {

      window.addEventListener("message", function(e) {

        resolve(e.data);

      }, { once: true });

});

    let iframe = document.querySelector("iframe");

    let load = new Promise(resolve => {

      iframe.addEventListener("load", resolve, { once: true });

});

    iframe.src = "https://www.example.com/" + location.pathname.replace("test_subdomain.html", file);

    info("loading " + iframe.src);

    await load;

    let data = await reply;

    is(data.testTrialInterfaceExposed, expectEnabled);

  add_task(async function test_subdomain() {

    await testFrame("file_subdomain_good_frame.html", true);

    await testFrame("file_subdomain_bad_frame.html", false);

});

</script>