src/Services/Ordering/Ordering.UnitTests/Domain/OrderAggregateTest.cs

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namespace Ordering.UnitTests.Domain;

using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
public class OrderAggregateTest
{
    public OrderAggregateTest()
    { }

    [Fact]
    public void Create_order_item_success()
    {
        //Arrange    
        var productId = 1;
        var productName = "FakeProductName";
        var unitPrice = 12;
        var discount = 15;
        var pictureUrl = "FakeUrl";
        var units = 5;

        //Act 
        var fakeOrderItem = new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units);

        //Assert
        Assert.NotNull(fakeOrderItem);
    }

    [Fact]
    public void Invalid_number_of_units()
    {
        //Arrange    
        var productId = 1;
        var productName = "FakeProductName";
        var unitPrice = 12;
        var discount = 15;
        var pictureUrl = "FakeUrl";
        var units = -1;

        //Act - Assert
        Assert.Throws<OrderingDomainException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
    }

    [Fact]
    public void Invalid_total_of_order_item_lower_than_discount_applied()
    {
        //Arrange    
        var productId = 1;
        var productName = "FakeProductName";
        var unitPrice = 12;
        var discount = 15;
        var pictureUrl = "FakeUrl";
        var units = 1;

        //Act - Assert
        Assert.Throws<OrderingDomainException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
    }

    [Fact]
    public void Invalid_discount_setting()
    {
        //Arrange