Rhino.Mocks和ref参数

Question

我在测试具有ref参数的方法时遇到问题.我不是库/代码所有者,所以我无法更改它,所以请不要建议我删除ref参数.

我使用这个网站作为参考:http: //ayende.com/wiki/Rhino%20Mocks%203.5.ashx#OutandRefarguments

这是测试:

    [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());
    }

这是我发现的错误:

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

我已经尝试了很多方法,但它根本不起作用.构建方法实现如下.这只是接收要构建的函数列表和具有相关功能的用户.如果他有一个函数,那么应该使用add方法构建它.

    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);
        }
    }

有人可以帮我吗？

Answer 1

您可以使用Arg <>来匹配Out/Ref参数的预期.如果您不关心实际值,可以使用以下内容:

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

如果你关心匹配输入/输出值,那么你可以使用它:

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

我认为您的测试很可能失败,因为uid与传入ICommandBar的实例不同,而不是Ref参数的特定问题.您可以使用如上所示的Equals来解决此问题,而不是使用引用相等性.

如果所有其他方法都失败并且UIDClass没有正确实现equals,则可以始终使用匹配的谓词:

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);