public void PartialCommandUpdate_Returns404NotFound_WhenNonExistentResourceIDSubmitted() { mockRepo.Setup(repo => repo.GetCommandById(0)).Returns(() => null); var controller = new CommandsController(mockRepo.Object, mapper); var result = controller.PartialCommandUpdate(0, new Microsoft.AspNetCore.JsonPatch.JsonPatchDocument <CommandUpdateDto> { }); Assert.IsType <NotFoundResult>(result); }