@Test
  public void
      whenTheCacheObservesANonEmtyBudgetClassificationItShouldUpdateItsCachedServiceFundingSourceWithObservedBudgetClassification() {

    BudgetClassification budgetClassification = Mockito.mock(BudgetClassification.class);

    cache.updateServiceFundingSourceWithBudgetClassification(budgetClassification);

    verify(serviceFundingSource).setFundingSource(budgetClassification);
  }