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How to use assert_closed_opener method in wpt

Best JavaScript code snippet using wpt

close-method.window.js

Source:close-method.window.js

1function assert_closed_opener(w, closed, opener) {2  assert_equals(w.closed, closed);3  assert_equals(w.opener, opener);4}5async_test(t => {6  const openee = window.open();7  assert_closed_opener(openee, false, self);8  openee.onunload = t.step_func(() => {9    assert_closed_opener(openee, true, self);10    t.step_timeout(() => {11      assert_closed_opener(openee, true, null);12      t.done();13    }, 0);14  });15  openee.close();16  assert_closed_opener(openee, true, self);17}, "window.close() queues a task to discard, but window.closed knows immediately");18async_test(t => {19  const openee = window.open("", "greatname");20  assert_closed_opener(openee, false, self);21  openee.close();22  assert_closed_opener(openee, true, self);23  const openee2 = window.open("", "greatname");24  assert_not_equals(openee, openee2);25  assert_closed_opener(openee, true, self); // Ensure second window.open() call was synchronous26  openee2.onunload = t.step_func(() => {27    assert_closed_opener(openee2, true, self);28    t.step_timeout(() => {29      assert_closed_opener(openee, true, null);30      assert_closed_opener(openee2, true, null);31      t.done();32    }, 0);33  });34  openee2.close();35  assert_closed_opener(openee, true, self); // Ensure second close() call was synchronous36  assert_closed_opener(openee2, true, self);...

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