Drug order is not allowed without a drug

	@Test
	public void hasSameOrderableAs_shouldBeFalseWhenThisOrderHasDrugAndOtherOrderDoesNotHaveDrug() {
		DrugOrder order = new DrugOrder();
		order.setDrug(new Drug());
		
		DrugOrder otherOrder = new DrugOrder();
		otherOrder.setDrug(null);
        otherOrder.setConcept(new Concept());
		
		assertFalse(order.hasSameOrderableAs(otherOrder));
	}
	
	@Test
	public void hasSameOrderableAs_shouldBeFalseWhenThisOrderDoesNotHaveDrugAndOtherOrderHasDrug() {
		DrugOrder order = new DrugOrder();
		order.setDrug(null);
        order.setConcept(new Concept());
		
		DrugOrder otherOrder = new DrugOrder();
		otherOrder.setDrug(new Drug());
		
		assertFalse(order.hasSameOrderableAs(otherOrder));
	}
	
	@Test
	public void hasSameOrderableAs_shouldBeTrueWhenBothOrdersDoNotHaveDrugAndConceptsMatch() {
		DrugOrder order = new DrugOrder();
		Concept concept = new Concept();
		order.setDrug(null);
		order.setConcept(concept);
		
		DrugOrder otherOrder = new DrugOrder();
		otherOrder.setDrug(null);
		otherOrder.setConcept(concept);
		
		assertTrue(order.hasSameOrderableAs(otherOrder));
	}
	
	@Test
	public void hasSameOrderableAs_shouldBeFalseWhenBothOrdersDoNotHaveDrugAndConceptsDoNotMatch() {
		DrugOrder order = new DrugOrder();
		order.setDrug(null);
		order.setConcept(new Concept(123));
		
		DrugOrder otherOrder = new DrugOrder();
		otherOrder.setDrug(null);
		otherOrder.setConcept(new Concept(456));
		
		assertFalse(order.hasSameOrderableAs(otherOrder));
	}