public async Task GetAllNewVolunteers_WhenYearsIsNotZero_ShouldReturnDesignationWiseVolunteersByYear() { //Arrange _enrollmentProcessorMock.Setup(p => p.GetAllNewVolunteers(null)).ReturnsAsync(_enrollments); var controller = new EnrollmentController(_enrollmentProcessorMock.Object); //Act var response = await controller.GetAllNewVolunteers(); //Assert var okResult = Assert.IsType <OkObjectResult>(response); var returnValue = Assert.IsType <List <Enrollment> >(okResult.Value); Assert.NotEmpty(returnValue); }