public void Given_AnnumIncome(double annualIncome, double expectedTax)
{
//----------Setup---------------------------
var progressiveTaxCalculator = new ProgressiveTaxCalculator(new Mock <IIncomeValidator>().Object);
//--------Execute---------------------------
var tax = progressiveTaxCalculator.Calculate(annualIncome);
//--------Assert----------------------------
Assert.AreEqual(expectedTax, tax);
}
public void Given_Calculate_Should_Call_IncomeValidator_Validate()
{
//----------Setup---------------------------
var mockValidator = new Mock <IIncomeValidator>();
mockValidator.Setup(m => m.Validate(It.IsAny <double>()));
var progressiveTaxCalculator = new ProgressiveTaxCalculator(mockValidator.Object);
//--------Execute---------------------------
progressiveTaxCalculator.Calculate(-12547d);
//--------Assert----------------------------
mockValidator.Verify(m => m.Validate(-12547d), Times.Once);
}