private void AssertExpectedRevenue(MileageClaim claim, CustomerRevenue customerRevenue, EcoStat stat)
    {
        float EXPECTED_REVENUE_PER_MILE = (float)customerRevenue.Revenue / (float)claim.Miles;

        Assert.AreEqual(claim.Name, stat.SalespersonName);
        Assert.AreEqual(EXPECTED_REVENUE_PER_MILE, stat.RevenuePerMile);
    }
    public void milage_claim_can_be_created_from_strings()
    {
        var claim = new MileageClaim("David Allen", 37000, 99);

        Assert.AreEqual("David Allen", claim.Name);
        Assert.AreEqual(37000, claim.Miles);
        Assert.AreEqual(99, claim.CustomerID);
    }