How to pass string and dictionary in NUnit test cases?

I want to make test for my method and I can pass 2 string variables, but I don't know how to pass Dictionary. It looks like this:

    [Test]
    [TestCase("agr1", "askdwskdls", Dictionary<TypeMeasurement,double>)]
    public void SendDataToAgregator_GoodVariables_ReturnsOn(string agrID,string devID, Dictionary<TypeMeasurement, double> measurement)
    {

    }

TypeMeasurement is enum and I know that this is not how u pass dictionary, but I don't know how, so I place it there so that u know what I want to do.