eShopOnContainers/test/Services/UnitTest/Ordering/Domain/OrderAggregateTest.cs

using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
using Ordering.Domain.Events;
using System;
using Xunit;

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<ArgumentNullException>(() => 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<ArgumentException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
    }

    [Fact]
    public void Invalid_discount_setting()
    {
        //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.Throws<ArgumentException>(() => fakeOrderItem.SetNewDiscount(-1));
    }

    [Fact]
    public void Invalid_units_setting()
    {
        //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.Throws<ArgumentException>(() => fakeOrderItem.AddUnits(-1));
    }

    [Fact]
    public void Add_new_Order_raises_new_event()
    {
        //Arrange    
        var street = "fakeStreet";
        var city = "FakeCity";
        var state = "fakeState";
        var country = "fakeCountry";
        var zipcode = "FakeZipCode";
        var cardTypeId = 5;
        var cardNumber = "12";
        var cardSecurityNumber = "123";
        var cardHolderName = "FakeName";
        var cardExpiration = DateTime.Now.AddYears(1);
        var expectedResult = 1;

        //Act 
        var fakeOrder = new Order(new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);

        //Assert
        Assert.Equal(fakeOrder.DomainEvents.Count, expectedResult);
    }

    [Fact]
    public void Add_event_Order_explicitly_raises_new_event()
    {
        //Arrange    
        var street = "fakeStreet";
        var city = "FakeCity";
        var state = "fakeState";
        var country = "fakeCountry";
        var zipcode = "FakeZipCode";
        var cardTypeId = 5;
        var cardNumber = "12";
        var cardSecurityNumber = "123";
        var cardHolderName = "FakeName";
        var cardExpiration = DateTime.Now.AddYears(1);
        var expectedResult = 2;

        //Act 
        var fakeOrder = new Order(new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
        fakeOrder.AddDomainEvent(new OrderStartedDomainEvent(fakeOrder,cardTypeId,cardNumber,cardSecurityNumber,cardHolderName,cardExpiration));
        //Assert
        Assert.Equal(fakeOrder.DomainEvents.Count, expectedResult);
    }

    [Fact]
    public void Remove_event_Order_explicitly()
    {
        //Arrange    
        var street = "fakeStreet";
        var city = "FakeCity";
        var state = "fakeState";
        var country = "fakeCountry";
        var zipcode = "FakeZipCode";
        var cardTypeId = 5;
        var cardNumber = "12";
        var cardSecurityNumber = "123";
        var cardHolderName = "FakeName";
        var cardExpiration = DateTime.Now.AddYears(1);
        var fakeOrder = new Order(new Address(street, city, state, country, zipcode), cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
        var @fakeEvent = new OrderStartedDomainEvent(fakeOrder, cardTypeId, cardNumber, cardSecurityNumber, cardHolderName, cardExpiration);
        var expectedResult = 1;

        //Act         
        fakeOrder.AddDomainEvent(@fakeEvent);
        fakeOrder.RemoveDomainEvent(@fakeEvent);
        //Assert
        Assert.Equal(fakeOrder.DomainEvents.Count, expectedResult);
    }
}