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OrderServiceTests.cs

using FluentAssertions;
using Nop.Core.Domain.Orders;
using Nop.Data;
using Nop.Services.Orders;
using NUnit.Framework;

namespace Nop.Tests.Nop.Services.Tests.Orders;

[TestFixture]
public class OrderServiceTests : ServiceTest
{
    private IOrderService _orderService;

    [OneTimeSetUp]
    public void SetUp()
    {
        _orderService = GetService();
    }

    [Test]
    public async Task ItShouldReturnNullOrderWhenOrderIdIsZero()
    {
        var order = await _orderService.GetOrderByIdAsync(0);
        order.Should().BeNull();
    }

    [Test]
    public async Task ItShouldReturnEmptyOrdersWhenOrderIdsNull()
    {
        var orders = await _orderService.GetOrdersByIdsAsync(null);
        orders.Count.Should().Be(0);
    }

    [Test]
    public async Task ItShouldReturnEmptyOrdersWhenOrderIdsEmpty()
    {
        var orders = await _orderService.GetOrdersByIdsAsync(Array.Empty());
        orders.Count.Should().Be(0);
    }

    [Test]
    public async Task ItShouldReturnOrdersByIds()
    {
        var orders = await _orderService.GetOrdersByIdsAsync([1, 2]);
        orders.Count.Should().Be(2);
    }

    [Test]
    public async Task ItShouldReturnNullWhenGuidIsEmpty()
    {
        var order = await _orderService.GetOrderByGuidAsync(Guid.Empty);
        order.Should().BeNull();
    }

    [Test]
    public async Task ItShouldGetOrderByGuidWhenGuidNotEmpty()
    {
        var order = await _orderService.GetOrderByIdAsync(1);

        var foundedOrder = await _orderService.GetOrderByGuidAsync(order.OrderGuid);
        foundedOrder.Id.Should().Be(order.Id);
    }

    [Test]
    public void ItShouldThrowExceptionIfOrderIsNullWhenDeleteOrder()
    {
        Assert.Throws(typeof(AggregateException), () => _orderService.DeleteOrderAsync(null).Wait());
    }

    [Test]
    public async Task ItShouldDeleteOrder()
    {
        var order = await _orderService.GetOrderByIdAsync(1);
        await _orderService.DeleteOrderAsync(order);

        order.Deleted.Should().BeTrue();
        order = await GetService>().GetByIdAsync(1);
        order.Should().NotBeNull();
        order.Deleted = false;
        await _orderService.UpdateOrderAsync(order);
    }

    [Test]
    public void ItShouldThrowIfOrderIsNullWhenInsertOrder()
    {
        Assert.Throws(() => _orderService.InsertOrderAsync(null).Wait());
    }

    [Test]
    public async Task ItShouldInsertOrder()
    {
        var order = new Order
        {
            CustomOrderNumber = string.Empty,
            CustomerId = 1,
            BillingAddressId = 1
        };

        await _orderService.InsertOrderAsync(order);
        order.Id.Should().BeGreaterThan(0);
        await GetService>().DeleteAsync(order);
    }

    [Test]
    public void ItShouldThrowIfOrderIsNullWhenUpdateOrder()
    {
        Assert.Throws(() => _orderService.UpdateOrderAsync(null).Wait());
    }
}