public async Task ReturnSuccess_WhenAddTaskIsOk() { //Arrange var storageTask = new StorageTask { Title = "Mon titre" }; _storageQueueService.Setup(sto => sto.AddMessageAsync(storageTask)).Returns(Task.CompletedTask); //Act var result = await _addTask.ExecuteAsync(storageTask); //Assert _storageQueueService.Verify(sto => sto.AddMessageAsync(storageTask), Times.Once); Assert.Equal(Status.Success, result.Status); }