public void Display_ExistingPet_ReturnView()
        {
            // Arrange
            string petName = "Fido";

            SetControllerContext(petName);

            // Act
            ViewResult result = (ViewResult)_controller.Display();

            // Assert
            Assert.IsNotNull(result);
            Assert.AreEqual("", result.ViewName);
            Assert.IsNotNull(result.Model);
            Assert.IsInstanceOfType(result.Model, typeof(HaveYouSeenMe.Models.Pet));
            Assert.AreEqual(petName, ((Pet)result.Model).PetName);
        }