public async void Get_Not_Exists()
{
CallControllerMockFacade mock = new CallControllerMockFacade();
mock.ServiceMock.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult <ApiCallServerResponseModel>(null));
CallController controller = new CallController(mock.ApiSettingsMoc.Object, mock.LoggerMock.Object, mock.TransactionCoordinatorMock.Object, mock.ServiceMock.Object, mock.ModelMapperMock.Object);
controller.ControllerContext = new ControllerContext();
controller.ControllerContext.HttpContext = new DefaultHttpContext();
IActionResult response = await controller.Get(default(int));
response.Should().BeOfType <StatusCodeResult>();
(response as StatusCodeResult).StatusCode.Should().Be((int)HttpStatusCode.NotFound);
mock.ServiceMock.Verify(x => x.Get(It.IsAny <int>()));
}