public async Task DeleteTravelAsync_Return_NoContent_Result(Mock <ITravelService> travelService)
{
var sut = new TravelController(travelService.Object);
sut.ControllerContext = new ControllerContext
{
HttpContext = new DefaultHttpContext()
};
travelService.Setup(setup => setup.DeleteTravelAsync(travelId));
// Act
var result = sut.DeleteTravelAsync(travelId);
// Assert
Assert.IsType <NoContentResult>(result.Result);
Assert.IsNotType <OkObjectResult>(result.Result);
Assert.IsNotType <CreatedAtActionResult>(result.Result);
Assert.IsNotType <BadRequestObjectResult>(result.Result);
Assert.IsNotType <AcceptedAtActionResult>(result.Result);
}