C# Moq-无法从x转换为System.Func<；x>；

我试图模仿这种方法：

 public JsonSerializerSettings createSerializerSettingsUsingRequest(Request request)
        {

            var serializerSettings = new JsonSerializerSettings()
            {
                ContractResolver = new Utilities.CustomContractResolver(false, request.text)
            };
            return serializerSettings;
        }

这就是我嘲笑的方式：

 _service = new Mock<IService>();
 _service.Setup(x => x.createSerializerSettingsUsingRequest(It.IsAny<Request>()))
                                .Returns<JsonSerializerSettings>(new JsonSerializerSettings { ContractResolver = new Utilities.CustomContractResolver(false, null) });

_service=new Mock（）；
_service.Setup（x=>x.createSerializerSettingsUsingRequest（It.IsAny（）））
.Returns（新JsonSerializerSettings{ContractResolver=new Utilities.CustomContractResolver（false，null）}）；

但错误表明

无法将“Newtonsoft.Json.JsonSerializerSettings”转换为

System.Func

---

有人知道如何正确地模拟它吗？

删除泛型参数。您试图调用的重载与您认为的不同

var settings = new JsonSerializerSettings { 
    ContractResolver = new Utilities.CustomContractResolver(false, null) 
};
_service
    .Setup(x => x.createSerializerSettingsUsingRequest(It.IsAny<Request>()))
    .Returns(settings);

var设置=新的JsonSerializerSettings{
ContractResolver=new Utilities.CustomContractResolver（false，null）
};
_服务
.Setup（x=>x.createSerializerSettingsUsingRequest（It.IsAny（）））
.返回（设置）；

如果您试图复制原始方法的行为，那么可以访问传递的参数

比如说

_service
    .Setup(x => x.createSerializerSettingsUsingRequest(It.IsAny<Request>()))
    .Returns<Request>(request => new JsonSerializerSettings { 
        ContractResolver = new Utilities.CustomContractResolver(false, request.text) 
    });

\u服务
.Setup（x=>x.createSerializerSettingsUsingRequest（It.IsAny（）））
.Returns（request=>newjsonserializersettings{
ContractResolver=new Utilities.CustomContractResolver（false，request.text）
});