public void CalculateTax_ReturnException()
{
Assert.Throws <ArgumentOutOfRangeException>(() => TaxRate.CreateTaxRate(-1M, 0M));
Assert.Throws <ArgumentOutOfRangeException>(() => TaxRate.CreateTaxRate(0M, -1M));
Assert.Throws <ArgumentOutOfRangeException>(() => TaxRate.CreateTaxRate(2M, 1M));
Assert.Throws <ArgumentOutOfRangeException>(() => TaxRate.CreateTaxRate(1M, 2M, null, -1M));
}
public void CalculateTax_ReturnBaseTax()
{
Assert.Equal(187M, TaxRate.CreateTaxRate(37001M, 87000M, baseTaxAmount: 2242M).CalculateTax(51000M));
}
public void CalculateTax_WithinMinimumRange()
{
Assert.True(TaxRate.CreateTaxRate(37001M, 87000M).IsWithinIncomeRange(51000M));
Assert.False(TaxRate.CreateTaxRate(18001M, 37000M).IsWithinIncomeRange(51000M));
}
public void CalculateTax_ReturnTaxOverMinIncome()
{
Assert.Equal(0M, TaxRate.CreateTaxRate(18201M, 37000M).CalculateTaxMinIncome(51000M));
Assert.Equal(6232M, TaxRate.CreateTaxRate(18201M, 37000M, 0.19M).CalculateTaxMinIncome(51000M));
}
public void CalculateMinimumTax_ReturnZero()
{
Assert.Equal(0M, TaxRate.CreateTaxRate(0M, 18200M).CalculateTax(18200M));
Assert.Equal(0M, TaxRate.CreateTaxRate(37001M, 87000M).CalculateTax(60050M));
}
public void CalculateTax()
{
Assert.Equal(922M, TaxRate.CreateTaxRate(37001M, 87000M, 0.325M, 3572M).CalculateTax(60050M));
Assert.Equal(650M, TaxRate.CreateTaxRate(37001M, 87000M, 0.325M, 3572M).CalculateTax(50000M));
}
