moq mongodb InsertOneAsync 方法答案

【问题标题】：moq mongodb InsertOneAsync methodmoq mongodb InsertOneAsync 方法
【发布时间】：2019-02-11 11:57:55
【问题描述】：

我正在使用带有 .net 核心的 Mongodb 数据库。我只想最小起订量插入使用mongodbContext 的方法。这是我正在尝试做的，但它不起作用：

public void InsertEventAsync_Test()
{
    //Arrange
    var eventRepository = EventRepository();
    var pEvent = new PlanEvent
    {
        ID = "testEvent",
        WorkOrderID = "WorkOrderID",
        IsDeleted = false,
        IsActive = true,
        EquipmentID = "EquipmentID"
    };
    ////Act


    //mockEventContext.Setup(mr => mr.PlanEvent.InsertOne(It.IsAny<PlanEvent>(), It.IsAny<InsertOneOptions>()))
    mockEventContext.Setup(s => s.PlanEvent.InsertOneAsync(It.IsAny<PlanEvent>(), It.IsAny<InsertOneOptions>())).Returns("sdad");
    var result = eventRepository.InsertEventAsync(pEvent);
    ////Assert
    result.Should().NotBeNull();
}

以下是我需要起订量的方法：

public EventRepository(IFMPContext eventContext)
{
    _eventContext = eventContext;
}

public async Task<string> InsertEventAsync(Model.EventDataModel.PlanEvent eventobj)
{
    eventobj._id = ObjectId.GenerateNewId();
    eventobj.CreatedDateTime = DateTime.UtcNow.ToString();
    try
    {
        _eventContext.PlanEvent.InsertOne(eventobj);
        return eventobj.ID;
    }
    catch (Exception ex)
    {
        string x = ex.Message;
    }
    return "";
}

【问题讨论】：

标签： mongodb unit-testing .net-core moq

【解决方案1】：

假设

public class EventRepository {
    private readonly IFMPContext eventContext;

    public EventRepository(IFMPContext eventContext) {
        this.eventContext = eventContext;
    }

    public async Task<string> InsertEventAsync(Model.EventDataModel.PlanEvent eventobj) {
        eventobj._id = ObjectId.GenerateNewId();
        eventobj.CreatedDateTime = DateTime.UtcNow.ToString();
        try {
            await eventContext.PlanEvent.InsertOneAsync(eventobj);
            return eventobj.ID;
        } catch (Exception ex) {
            string x = ex.Message;
        }
        return "";
    }
}

您需要配置测试以支持被测方法的异步特性

public async Task InsertEventAsync_Test()
{
    //Arrange
    var expected = "testEvent";
    var pEvent = new PlanEvent {
        ID = expected,
        WorkOrderID = "WorkOrderID",
        IsDeleted = false,
        IsActive = true,
        EquipmentID = "EquipmentID"
    };

    var mockEventContext = new Mock<IFMPContext>();
    mockEventContext
        .Setup(_ => _.PlanEvent.InsertOneAsync(It.IsAny<PlanEvent>(), It.IsAny<InsertOneOptions>()))
        .ReturnsAsync(Task.FromResult((object)null));

    var eventRepository = new EventRepository(mockEventContext.Object);

    //Act
    var actual = await eventRepository.InsertEventAsync(pEvent);

    //Assert
    actual.Should().NotBeNull()
    actual.Should().Be(expected);

}

需要将测试方法定义更新为异步的，以允许等待被测方法。还需要以这样一种方式设置模拟依赖项，以允许异步流在调用时按预期继续。

【讨论】：

【解决方案2】：

@Nkosi 非常感谢您的帮助。最后我找到了方法。我缺少额外的起订量参数It.IsAny<System.Threading.CancellationToken>() 下面是工作测试

    public void InsertEventAsync_Test()
        {
            //Arrange
            var eventRepository = EventRepository();
            var pEvent = new PlanEvent
            {
                ID = "testEvent",
                WorkOrderID = "WorkOrderID",
                IsDeleted = false,
                IsActive = true,
                EquipmentID = "EquipmentID"
            };
            ////Act

            mockEventContext.Setup(s => s.PlanEvent.InsertOne(It.IsAny<PlanEvent>(), It.IsAny<InsertOneOptions>(),It.IsAny<System.Threading.CancellationToken>()));
            var result = eventRepository.InsertEventAsync(pEvent);
            ////Assert
            result.Should().NotBeNull();
            Assert.AreEqual(pEvent.ID, result);

        }

【讨论】：