具体来说,我试图使用通用的It.IsAny< string>作为键的匹配器,并通过It.IsAny< object>设置值.当通过索引访问并设置值时,它不会匹配,并且不会访问我的回调方法.所以我的单位测试是失败的.

var stateTable = new HashTable;
var httpSession = new Mock<HttpSessionStateBase>();

//works via httpSession.Add(key,value);
httpSession.Setup(x => x.Add(It.IsAny<string>(),It.IsAny<object>()))
    .Callback((string index,object value) => {
        var i = index;
        var v = value;

            stateData[i] = v;
    });

//does not work via httpSession[key] = value;
httpSession.SetupSet(x => x[It.IsAny<string>()] = It.IsAny<object>())
    .Callback( (string index,object value) => {
        var i = index;
        var v = value;

        stateData[i] = v;
});

我正在使用Moq 4.0.10827

解决方法

httpSession.SetupSet(x => x["someValue"] = It.IsAny<object>())
    .Callback( (string index,object value) => {
        var i = index;
        var v = value;

        stateData[i] = v;
});

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