Let’s say I have an interface I want to mock, and a concrete class that implements that interface, and I want to be able to verify that the mock is called (easy), but delegate the implementation without having to do setup on every parameter of every method call — is there an easier way to do this?

[Fact]
public void CheckCalcImpl()
{
    var mockCalc = new Mock<ICalculator>();
    var mock = mockCalc.Object;
    var calc = new Calculator();
    mockCalc.Setup(mockCalc => mockCalc.Add(It.IsAny<int>(), It.IsAny<int>()))
        .Returns((int a, int b) => calc.Add(a, b));

    // pretend this is somewhere deep in another method and I want to verify it occurred, but I don't
    // want to setup every method on the ICalculator mock
    var result = mock.Add(1, 2);

    mockCalc.Verify(mockCalc => mockCalc.Add(It.IsAny<int>(), It.IsAny<int>()), Times.Once);
}

I looked at all the methods on the mock and didn’t see what I was looking for… is there something else hidden away or in another useful library I can add to help me do this?