如何单元测试中的函数模拟的方法 [英] How to UnitTest a Function in a mocked method

问题描述

我怎么可以在这里测试DeleteAppointmentById

  Func键< IDataAdapterRW，IEnumerable的< UINT>>功能= DB => DeleteAppointmentById（DB，appointmentId）; 
 
返回_dataContextProvider.GetContextRW（）运行（功能）; 
  

_dataContextProvider被嘲笑与起订量。如果我运行测试它从未进入DeleteAppointmentById当然

的方法进行测试：

 公开的IEnumerable< UINT> DeleteAppointment（UINT appointmentId）
 {
 Func键< IDataAdapterRW，IEnumerable的< UINT>>功能= DB => DeleteAppointmentById（DB，appointmentId）; 
返回_dataContextProvider.GetContextRW（）运行（功能）; 
} 
  

DeleteAppointmentById是内部方法（私）我真正感兴趣。

我的测试：

  [测试] 
公共无效DeleteAppointment_Valid_DeletedRecordId （）
 {
 //设置
变种dbContextMock =新的模拟< IDataContextProvider>（）; 
变种dataAdapterMock =新的模拟< IDataContext< IDataAdapterRW>>（）; 
 
 dbContextMock.Setup（D => d.GetContextRW（））
 .Returns（dataAdapterMock.Object）; 
 
 dataAdapterMock.Setup（A => a.Run（It.IsAny<作用< IDataAdapterRW>>（）））; 
变种calendarService =新CalendarService（dbContextMock.Object）; 
 
 //运行
 VAR的结果= calendarService.DeleteAppointment（1）; 
 
 //断言
 Assert.AreEqual（1，结果）; 
} 
  

解决方案

可以的访问结果传递函数功能作为在运行参数方法，以及断言的类似下面的结果。

为什么要返回的结果？因为它是一个模拟和的不知道如何的运行方法的的行为的。

  [测试] 
公共无效DeleteAppointment_Valid_DeletedRecordId（）
 {
 //设置
 VAR dbContextMock =新的模拟< IDataContextProvider>（）; 
变种dataAdapterMock =新的模拟< IDataContext< IDataAdapterRW>>（）; 
 
 dbContextMock.Setup（D => d.GetContextRW（））
 .Returns（dataAdapterMock.Object）; 
 
 dataAdapterMock.Setup（A => a.Run（It.IsAny< Func键< IDataAdapterRW，IEnumerable的< UINT>>>（）））
 .Returns（（Func键< IDataAdapterRW，IEnumerable的< UINT>> FUNC）=> {返回FUNC（dataAdapterMock.Object）;}）; //配置模拟返回列表
变种calendarService =新CalendarService（dbContextMock.Object）; 
 
 //运行
 INT ID = 1; 
 VAR的结果= calendarService.DeleteAppointment（ID）; 
 
 //断言
 VAR isInList = result.Contains（ID）; //验证结果是否包含
 Assert.AreEqual（isInList，真）; 
} 
  

How can I test the DeleteAppointmentById here?

 Func<IDataAdapterRW, IEnumerable<uint>> function = db =>   DeleteAppointmentById(db, appointmentId);

 return _dataContextProvider.GetContextRW().Run(function);

_dataContextProvider is mocked with moq. If I run the test it never enters DeleteAppointmentById of course

The method to test:

public IEnumerable<uint> DeleteAppointment(uint appointmentId)
    {
        Func<IDataAdapterRW, IEnumerable<uint>> function = db => DeleteAppointmentById(db, appointmentId);
        return _dataContextProvider.GetContextRW().Run(function);
    }

DeleteAppointmentById is the inner method (private) I am really interested in.

my test:

[Test]
    public void DeleteAppointment_Valid_DeletedRecordId()
    {
        //Setup
        var dbContextMock = new Mock<IDataContextProvider>();
        var dataAdapterMock = new Mock<IDataContext<IDataAdapterRW>>();

        dbContextMock.Setup(d => d.GetContextRW())
            .Returns(dataAdapterMock.Object);

        dataAdapterMock.Setup(a => a.Run(It.IsAny<Action<IDataAdapterRW>>()));
        var calendarService = new CalendarService(dbContextMock.Object);

        //Run
        var result = calendarService.DeleteAppointment(1);

        //Assert
        Assert.AreEqual(1, result);
    }

解决方案

You can access the result of the Func passed as parameter in Run method, and to Assert the result like below.

Why to return the result? Because it's a mock and don't know how Run method is behaving.

[Test]
public void DeleteAppointment_Valid_DeletedRecordId()
{
    //Setup
    var dbContextMock = new Mock<IDataContextProvider>();
    var dataAdapterMock = new Mock<IDataContext<IDataAdapterRW>>();

    dbContextMock.Setup(d => d.GetContextRW())
        .Returns(dataAdapterMock.Object);

    dataAdapterMock.Setup(a => a.Run(It.IsAny<Func<IDataAdapterRW, IEnumerable<uint>>>()))
                   .Returns((Func<IDataAdapterRW, IEnumerable<uint>> func) => { return func(dataAdapterMock.Object);}); // configure the mock to return the list
    var calendarService = new CalendarService(dbContextMock.Object);

    //Run
    int id = 1;
    var result = calendarService.DeleteAppointment(id);

    //Assert
    var isInList = result.Contains(id); // verify the result if contains the
    Assert.AreEqual(isInList, true);
}

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