function testSetAllergenName()
 {
     //arrange
     $name = "peanut allergy";
     $test_allergy = new Allergen($name);
     //act
     $test_allergy->setName("peanut allergy");
     $result = $test_allergy->getName();
     //assert
     $this->assertEquals("peanut allergy", $result);
 }