@Test
 public void shouldBuildCronExpressionForAParticularDayAndTime() {
   WeeklyCronJobExpressionBuilder weeklyCronJobExpressionBuilder =
       new WeeklyCronJobExpressionBuilder(DayOfWeek.Monday);
   Assert.assertEquals(
       "0 30 10 ? * 2", weeklyCronJobExpressionBuilder.withTime(new Time(10, 30)).build());
 }
 @Test
 public void shouldBuildCronExpressionForAParticularDayOfWeek() {
   WeeklyCronJobExpressionBuilder weeklyCronJobExpressionBuilder =
       new WeeklyCronJobExpressionBuilder(DayOfWeek.Friday);
   Assert.assertEquals("0 0 0 ? * 6", weeklyCronJobExpressionBuilder.build());
 }