package marsrover;

import org.junit.Test;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

public class _MarsRoverParachuteCollaborationTest {
    @Test
    public void whenTheParachuteOpensTheLanderShouldDecelerate () {
        Lander lander = mock (Lander.class);
        Parachute parachute = new MarsRoverParachute (lander);

        parachute.open ();

        verify (lander).decelerate ();
    }

}