@Test
 public void testNormal() {
   // given
   TimerNameCache timerNameCache = new TimerNameCache();
   // when
   TimerName timerName = timerNameCache.getName(C.class);
   // then
   assertThat(((TimerNameImpl) timerName).name()).isEqualTo("z");
 }
 @Test
 public void testClassWithoutPointcutAnnotation() {
   // given
   TimerNameCache timerNameCache = new TimerNameCache();
   // when
   TimerName timerName = timerNameCache.getName(A.class);
   // then
   assertThat(((TimerNameImpl) timerName).name()).isEqualTo("unknown");
 }
 @Test
 public void testClassWithEmptyTimerName() {
   // given
   TimerNameCache timerNameCache = new TimerNameCache();
   // when
   TimerName timerName = timerNameCache.getName(B.class);
   // then
   assertThat(((TimerNameImpl) timerName).name()).isEqualTo("unknown");
 }
 @Test
 public void testNullClass() {
   // given
   TimerNameCache timerNameCache = new TimerNameCache();
   // when
   TimerName timerName = timerNameCache.getName(null);
   // then
   assertThat(((TimerNameImpl) timerName).name()).isEqualTo("unknown");
 }