def METHOD_NAME(self):
    """
    ``install_optimal_reactor`` will install IOCPReactor on Windows.
    """
    if sys.platform != 'win32':
        raise unittest.SkipTest('unit test requires Windows')
    reactor_mock = Mock()
    self.patch_reactor("iocpreactor", reactor_mock)
    self.patch(sys, "platform", "win32")
    # Emulate that a reactor has not been installed
    self.patch_modules()
    choosereactor.install_optimal_reactor()
    reactor_mock.install.assert_called_once_with()