elable", "composed"];
  test(() => {
      const event = new CapturedMouseEvent("");
      inherited_options.forEach(name => {
          assert_equals(event[name], false, `event.${name} with default eventInitDict`);
      });

      inherited_options.forEach(name => {
          const options = {};
          options[name] = true;
          const event = new CapturedMouseEvent("", options);
          inherited_options.forEach(other_name => {
              assert_equals(event[other_name], other_name == name,
 