Private Sub DivideOffsetByOneVerify()
    ' Test the DivideOffsetByOne function.

    ' Check general behavior.
    Debug.Assert DivideOffsetByOne(4, 2) = 2
    Debug.Assert DivideOffsetByOne(3, 2) = 2
    Debug.Assert DivideOffsetByOne(2, 2) = 1
    Debug.Assert DivideOffsetByOne(1, 2) = 1
    Debug.Assert DivideOffsetByOne(0, 2) = 0
    Debug.Assert DivideOffsetByOne(-1, 2) = -1
    Debug.Assert DivideOffsetByOne(-2, 2) = -1
    Debug.Assert DivideOffsetByOne(-3, 2) = -2
    Debug.Assert DivideOffsetByOne(-4, 2) = -2

    ' Check signs.

    Debug.Assert DivideOffsetByOne(6, 2) = 3
    Debug.Assert DivideOffsetByOne(-6, -2) = 3

    Debug.Assert DivideOffsetByOne(6, -2) = -3
    Debug.Assert DivideOffsetByOne(-6, 2) = -3

    ' Check Nulls
    Debug.Assert IsNull(DivideOffsetByOne(Null, 2))
    Debug.Assert IsNull(DivideOffsetByOne("Joe", 2))
    Debug.Assert IsNull(DivideOffsetByOne(2, Null))
    Debug.Assert IsNull(DivideOffsetByOne(2, "Joe"))

End Sub