public void CalculatorExecutionTest()
{
// Arrange
ICanDiscountStrategy canDiscountStrategy
= new DayOfWeekCanDiscountStrategy(DayOfWeek.Friday);
ICalculateDiscountStrategy calculateDiscountStrategy
= new PercentageCalculateDiscountStrategy(0.5m);
IDiscountCalculator discountCalculator
= new DiscountCalculator(canDiscountStrategy, calculateDiscountStrategy);
Order order = CreateOrderWith1Product("2019-10-18", 1000);
// Act
Action act = () => discountCalculator.CalculateDiscount(order);
// Asserts
act
.ExecutionTime()
.Should()
.BeLessOrEqualTo(500.Milliseconds());
}
private static DiscountCalculator CreateDiscountCalculator()
{
ICanDiscountStrategy canDiscountStrategy
= new DayOfWeekCanDiscountStrategy(DayOfWeek.Friday);
ICalculateDiscountStrategy calculateDiscountStrategy
= new PercentageCalculateDiscountStrategy(0.5m);
var discountCalculator
= new DiscountCalculator(canDiscountStrategy, calculateDiscountStrategy);
return(discountCalculator);
}
public void PercentageDiscountCalculateStrategyTest(
decimal unitPrice,
decimal percentage,
decimal expected)
{
// Arrange
Order order = CreateOrderWith1Product("2019-10-17", unitPrice);
ICalculateDiscountStrategy calculateDiscountStrategy
= new PercentageCalculateDiscountStrategy(percentage);
// Act
decimal result = calculateDiscountStrategy.CalculateDiscount(order);
// Assert
result.Should().Be(expected, "jaki upust????");
// dotnet add package FluentAssertions
}
