public async Task Given_PlaceOrderCommandWithDiscountCode_When_HandleAsync_Then_DiscountedOrderIsCreatedAndAddedToRepository()
{
//Arrange
var discountCodeGenerator = new DiscountCodeGenerator();
var sampleDiscount = discountCodeGenerator.GenerateCodeForSubscriber(_identityProviderMock.Object.Next(), Guid.NewGuid());
var command = new PlaceOrder
{
Id = Guid.NewGuid(),
Value = 100,
DiscountCode = sampleDiscount.GetCode()
};
Order placedOrder = null;
_discountRepositoryMock.Setup(x => x.FindByCode(It.Is <string>(discountCode => discountCode == sampleDiscount.GetCode()), It.IsAny <CancellationToken>()))
.ReturnsAsync(sampleDiscount);
_orderRepositoryMock.Setup(x => x.Add(It.IsAny <Order>(), It.IsAny <CancellationToken>()))
.Callback <Order, CancellationToken>((order, cancellationToken) => { placedOrder = order; });
//Act
await _sut.HandleAsync(command, CancellationToken.None);
//Assert
Assert.That(placedOrder.Summary.Value, Is.EqualTo(command.Value));
Assert.That(placedOrder.Summary.DiscountValue, Is.EqualTo(CalculateDiscount(command.Value, sampleDiscount)));
Assert.That(placedOrder.Summary.TotalValue, Is.EqualTo(command.Value - CalculateDiscount(command.Value, sampleDiscount)));
}
public void When_Make_Then_ReturnsNotEmptyCode()
{
//Arrange
var codeGenerator = new DiscountCodeGenerator();
//Act
var discount = codeGenerator.GenerateCodeForSubscriber(Guid.NewGuid(), Guid.NewGuid());
//Assert
Assert.That(string.IsNullOrWhiteSpace(discount.Code), Is.False);
}
public void When_Make_Then_ReturnsUniqueDiscountCode()
{
//Arrange
var codeGenerator = new DiscountCodeGenerator();
//Act
var discount1 = codeGenerator.GenerateCodeForSubscriber(Guid.NewGuid(), Guid.NewGuid());
var discount2 = codeGenerator.GenerateCodeForSubscriber(Guid.NewGuid(), Guid.NewGuid());
//Assert
Assert.That(discount1.Code, Is.Not.EquivalentTo(discount2.Code));
}
