public void CalculatesFlatRate()
{
var rule = new TieredDeductionRule("TestRule", new List<DeductionBracket>(), 0.25m);
var amountDeducted = rule.Apply(600m);
Assert.AreEqual(150m, amountDeducted);
}
public void WhenGrossExceedsBrackets_EnsureBracketsAndFinalRateAreApplied()
{
var amountDeducted = rule.Apply(800m);
Assert.AreEqual(250m, amountDeducted);
}