test_navigator_share_consume_user_activation.html

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<!DOCTYPE html>

<title>Web Share: consume transient activation</title>

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

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

<link rel="stylesheet" href="/tests/SimpleTest/test.css" />

<body>

  <button id="share">Share</button>

</body>

<script>

  // TODO: add a task that tests share() consume the transient user activation.

  // Because OS-level prompt can't be cancelled, it's currently not possible to

  // test this. We need to add a Web share Mocking service:

  // https://bugzilla.mozilla.org/show_bug.cgi?id=1646229

  // test that share() would be blocked with an already-consumed-activation.

  add_task(async function blockedIfAlreadyConsumed() {

    const wrappedDoc = SpecialPowers.wrap(document);

    const button = document.getElementById("share");

    // Kick off transient activation

    synthesizeMouseAtCenter(button, {});

ok(

      wrappedDoc.hasValidTransientUserGestureActivation,

      "Activated by a gesture"

);

    wrappedDoc.consumeTransientUserGestureActivation();

    try {

      const sharePromise = navigator.share({ title: "test" });

      await sharePromise;

      ok(false, "must throw because activation was already consumed");

    } catch (err) {

      is(err.name, "NotAllowedError", "Expected NotAllowedError DOMException");

    } finally {

ok(

        !wrappedDoc.hasValidTransientUserGestureActivation,

        "share() must consume the activation"

);

});

</script>