public void NoPricingStrategy_When100_Then100()
{
// Arrange
var myFacade = new MyFacade(100, new NullPricingStrategy());
// Act
var result = myFacade.getTotal();
// Assert
result.Should().Be(100);
}
public void AbsoluteDiscountOverThresholdStrategy(decimal threshold, decimal amount, decimal expectedResult)
{
// Arrange
var absoluteDiscountOverThresholdStrategy = new AbsoluteDiscountOverThresholdStrategy(threshold, 10m);
var myFacade = new MyFacade(amount, absoluteDiscountOverThresholdStrategy);
// Act
var result = myFacade.getTotal();
// Assert
result.Should().Be(expectedResult);
}
public void PercentageDiscount_WhenInitialAmountIs_100_And_20PercentDiscountProvided_ThenReturn80()
{
// Arrange
var pricingStrategy = new PercentageDiscountStrategy(20);
var myFacade = new MyFacade(100, pricingStrategy);
// Act
var total = myFacade.getTotal();
// Assert
total.Should().Be(80);
}
public void DoubleDiscountAfterLunchStrategy_WhenBefore12_ThenSingleDiscount()
{
// Arrange
var timeSourceMock = new Mock <ITimeSource>();
timeSourceMock.Setup(x => x.Now).Returns(new DateTime(2018, 1, 1, 11, 59, 59));
var doubleDiscountAfterLunchStrategy = new DoubleDiscountAfterLunchStrategy(timeSourceMock.Object, 10m);
var myFacade = new MyFacade(100, doubleDiscountAfterLunchStrategy);
// Act
var result = myFacade.getTotal();
timeSourceMock.Verify(x => x.Now, Times.Once);
result.Should().Be(90);
}