public void TestMaleGenderCountAsExpected()
{
////Arrange
var mock = new Mock <IPetRepository>();
mock.Setup(p => p.GetPetNamesAccordingToGender()).Returns(GetMockResultWithError());
PetController controller = new PetController(mock.Object);
//Act
var result = controller.Error();
//Assert
Assert.IsInstanceOfType(result, typeof(ViewResult));
}