Rhino.Mocks和ref参数 [英] Rhino.Mocks and ref parameter

问题描述

我有问题来测试，有一个ref参数的方法。我不是库/代码老板，所以我不能改变它，所以请不要认为我删除ref参数。

I'm having problems to test a method that has a ref parameter. I'm not the library/code owner, so I can't change it, so please do not suggest that I remove the ref parameter.

我用这网站作为参考：
http://ayende.com/wiki/Rhino ％20Mocks％203.5.ashx＃OutandRefarguments

I'm using this website as reference: http://ayende.com/wiki/Rhino%20Mocks%203.5.ashx#OutandRefarguments

下面是测试：

    [Test]
    public void TestBuildSimpleProfile()
    {
        // arrange
        var barMock = MockRepository.GenerateStrictMock<ICommandBar>();
        var controlBuilder = new ControlBuilder(barMock);

        var user = new Usuario();
        user.PRF_PERFIS = new Perfis();

        var perfil = new Perfil();
        perfil.FNC_FUNCIONALIDADES = new Funcionalidades();
        var func1 = new Funcionalidade();
        func1.FNC_NU_ID = 1;
        func1.FNC_FL_ATIVO = true;
        func1.FNC_NO_CHAVE = "Associar Registros";
        func1.FNC_DE_FUNCIONALIDADE = "{0653aeac-c5ef-46fa-9e99-408719296ed3}";

        perfil.FNC_FUNCIONALIDADES.Add(func1);
        user.PRF_PERFIS.Add(perfil);

        var funcs = new List<IFunctionality>();
        funcs.Add(new FunctionalityAttribute(1,"Associar Registros", "{0653aeac-c5ef-46fa-9e99-408719296ed3}", "SGIGT", true,"admin,editor"));

        var uid = new UIDClass() { Value = "{0653aeac-c5ef-46fa-9e99-408719296ed3}" };
        var arg = Arg<object>.Ref(Is.Anything(), 0).Dummy;

        // act
        controlBuilder.Build(user, funcs);

        // assert
        barMock.AssertWasCalled(x => x.Add(uid, ref arg), y => y.IgnoreArguments());
    }

下面是我发现的错误：

Rhino.Mocks.Exceptions.ExpectationViolationException：ICommandBar.Add（ESRI.ArcGIS.esriSystem.UIDClass，0）;预计＃0，实际＃1。

Rhino.Mocks.Exceptions.ExpectationViolationException : ICommandBar.Add(ESRI.ArcGIS.esriSystem.UIDClass, 0); Expected #0, Actual #1.

我已经尝试了多种方法，但它根本不起作用。构建方法实现如下。这只是接收功能来构建和一个用户，这已关联的功能列表。如果他有一个功能，它应该是建立，使用add方法

I've already tried a number of ways, but it simply does not work. The build method implementation is below. This just receives a list of functions to build and an user, which has associated functions. If he has a function, it should be build, using the add method.

    public void Build(Usuario u, List<IFunctionality> funcsToBuild)
    {
        if (u == null)
            throw new ArgumentNullException("u");

        if (funcsToBuild == null)
            throw new ArgumentNullException("funcsToBuild");

        if (u.PRF_PERFIS == null || u.PRF_PERFIS.Count <= 0)
            return;

        var functionList = (from funcs in funcsToBuild
                            select funcs.FunctionDescription).ToList();

        var userFuncs = (from profile in u.PRF_PERFIS
                         from functionality in profile.FNC_FUNCIONALIDADES
                         where functionality.FNC_FL_ATIVO.HasValue && functionality.FNC_FL_ATIVO.Value && functionList.Contains(functionality.FNC_DE_FUNCIONALIDADE)
                         select new FunctionalityAttribute((int)functionality.FNC_NU_ID.Value,functionality.FNC_NO_CHAVE, functionality.FNC_DE_FUNCIONALIDADE, "SGIGT", true, "")).Cast<IFunctionality>().OrderBy(x => x.FunctionId).ToList();

        for (int index = 0; index < userFuncs.Count; index++)
        {
            IFunctionality t = userFuncs[index];
            object i = index;
            var functionality = t;
            var uid = new UIDClass() {Value = functionality.FunctionDescription};
            var ci = _commandBar.Add(uid, ref i);
        }
    }

任何机会，有人能帮助我吗？

Any chance someone can help me?

推荐答案

您可以使用精氨酸和LT;>匹配上出/ ref参数的期望。如果你不关心实际值，可以使用类似以下内容：

You can use Arg<> to match on expectations for Out/Ref parameters. If you don't care about the actual value, you could use something like the following:

barMock.AssertWasCalled(x => 
              x.Add(Arg<UIDClass>.IsAnything(), 
              ref Arg<object>.Ref(Is.Anything(), null).Dummy);

如果你真的关心匹配的输入/输出值，那么你可以用这个来代替：

If you do care about matching input/output values, then you could use this instead:

barMock.AssertWasCalled(x => 
              x.Add(Arg<UIDClass>.Is.Equal(uid), 
              ref Arg<object>.Ref(Is.Same(input), output).Dummy);

我觉得你的测试最有可能失败，因为流体是不一样的实例作为一个传递到ICommandBar，而不是与参考参数的一个具体问题，你可以通过使用equals如上图所示，而不是使用引用相等解决这个问题。

I think your test is most likely failing because uid is not the same instance as the one passed into ICommandBar, rather than a specific issue with the Ref parameter. You can solve this by using Equals as shown above, rather than using reference equality.

如果一切都失败了，并UIDClass不执行等于正确，你可以随时使用匹配谓词：

If all else fails and UIDClass doesn't implement equals correctly, you can always use a matching predicate:

barMock.AssertWasCalled(x => 
              x.Add(Arg<UIDClass>.Is.Matching(
                    delegate(UIDClass u) { return u.Value == uid.Value; }
              ), 
              ref Arg<object>.Ref(Is.Same(input), output).Dummy);

这篇关于Rhino.Mocks和ref参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！