=> {
                assert_equals(e.blockedURI, "inline");
                assert_equals(e.target, document.querySelector('#block3'));
                return watcher.wait_for('securitypolicyviolation');
            }))
            .then(t.step_func(e => {
                assert_equals(e.blockedURI, "inline");
                assert_equals(e.target, document.querySelector('#block4'));
                return watcher.wait_for('securitypolicyviolation');
            }))
            .then(t.step_func(e => {
   