dialog-focusing-steps-disconnected.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/interactive-elements/the-dialog-element/dialog-focusing-steps-disconnected.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<title>Test focusing steps when dialog is disconnected</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

</head>

<body>

<input>

<script>

test(function() {

  const outerInput = document.querySelector("input");

  outerInput.focus();

  assert_equals(document.activeElement, outerInput,

    "Focus should be on element we just focused");

  const dialog = document.createElement("dialog");

  assert_false(dialog.open, "Dialog should initially be closed");

  assert_false(dialog.hasAttribute('open'), "Dialog should initially be closed");

  const innerInput = document.createElement("input");

  innerInput.autofocus = true;

  dialog.append(innerInput);

  dialog.show();

  this.add_cleanup(() => { dialog.close(); });

  assert_true(dialog.open, "Disconnected dialog can still be open");

  assert_equals(document.activeElement, outerInput, "Focusing steps should not change focus");

}, "dialog.show(): focusing steps should not change focus on disconnected <dialog>");

test(function() {

  assert_throws_dom("InvalidStateError", () => {

    document.createElement("dialog").showModal();

});

}, "dialog.showModal() should throw on disconnected <dialog>");

</script>

</body>

</html>