using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Util.Tests.Fakes;
using Util.Tests.Infrastructure;
using Util.Tests.Models;
using Util.Tests.Repositories;
using Util.Tests.UnitOfWorks;
using Xunit;

namespace Util.Data.EntityFrameworkCore.Tests; 

/// <summary>
/// 订单仓储测试
/// 说明:
/// 1. 测试string类型标识
/// 2. 测试一对多导航属性
/// </summary>
public class OrderRepositoryTest : TestBase {

    #region 测试初始化

    /// <summary>
    /// 仓储
    /// </summary>
    private readonly IOrderRepository _repository;

    /// <summary>
    /// 测试初始化
    /// </summary>
    public OrderRepositoryTest( IOrderRepository repository, ITestUnitOfWork unitOfWork ) : base( unitOfWork ) {
        _repository = repository;
    }

    #endregion

    #region 辅助方法

    /// <summary>
    /// 添加订单
    /// </summary>
    private async Task<Order> AddOrderAsync() {
        var order = OrderFakeService.GetOrder();
        order.Init();
        order.OrderItems.Add( CreateOrderItem() );
        order.OrderItems.Add( CreateOrderItem() );
        await _repository.AddAsync( order );
        await UnitOfWork.CommitAsync();
        UnitOfWork.ClearCache();
        return order;
    }

    /// <summary>
    /// 创建订单项
    /// </summary>
    private OrderItem CreateOrderItem() {
        var item = OrderItemFakeService.GetOrderItem();
        item.Init();
        return item;
    }

    #endregion

    #region Single

    /// <summary>
    /// 测试查找单个实体
    /// </summary>
    [Fact]
    public async Task TestSingle_1() {
        //添加实体
        var entity = await AddOrderAsync();

        //查找单个实体
        var result = await _repository.SingleAsync( t => t.Id == entity.Id );

        //验证
        Assert.Empty( result.OrderItems );
    }

    /// <summary>
    /// 测试查找单个实体 - 使用Include包含子实体集合
    /// </summary>
    [Fact]
    public async Task TestSingle_2() {
        //添加实体
        var entity = await AddOrderAsync();

        //查找单个实体
        var result = await _repository.SingleAsync( t => t.Id == entity.Id, queryable => queryable.Include( t => t.OrderItems ) );

        //验证
        Assert.Equal( 2, result.OrderItems.Count );
    }

    #endregion

    #region SingleAsync

    /// <summary>
    /// 测试查找单个实体
    /// </summary>
    [Fact]
    public async Task TestSingleAsync_1() {
        //添加实体
        var entity = await AddOrderAsync();

        //查找单个实体
        var result = await _repository.SingleAsync( t => t.Id == entity.Id );

        //验证
        Assert.Empty( result.OrderItems );
    }

    /// <summary>
    /// 测试查找单个实体 - 使用Include包含子实体集合
    /// </summary>
    [Fact]
    public async Task TestSingleAsync_2() {
        //添加实体
        var entity = await AddOrderAsync();

        //查找单个实体
        var result = await _repository.SingleAsync( t => t.Id == entity.Id, queryable => queryable.Include( t => t.OrderItems ) );

        //验证
        Assert.Equal( 2, result.OrderItems.Count );
    }

    #endregion
}