source: class LevelTest {
  
  	@Test
  	public void components_are_identified_by_name() {
  
target: 		Level level = new Level("dummy");
  		Component a = level.component("a");
  		Component b = level.component("b");
  		assertThat(a).isNotSameAs(b);
  		Component secondReferenceToA = level.component("a");
  		assertThat(a).isSameAs(secondReferenceToA);
  	}
  
  }