322 lines
11 KiB
C#
322 lines
11 KiB
C#
using FsCheck;
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using FsCheck.Xunit;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.Diagnostics;
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using Microsoft.Extensions.Logging;
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using Moq;
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using VendingMachine.Application.DTOs.Coupon;
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using VendingMachine.Application.Services;
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using VendingMachine.Domain.Entities;
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using VendingMachine.Infrastructure.Data;
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using VendingMachine.Infrastructure.Services;
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namespace VendingMachine.Tests;
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/// <summary>
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/// 优惠券模块属性测试
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/// </summary>
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public class CouponPropertyTests
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{
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/// <summary>
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/// 创建内存数据库上下文
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/// </summary>
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private static AppDbContext CreateDbContext(string dbName)
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{
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var options = new DbContextOptionsBuilder<AppDbContext>()
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.UseInMemoryDatabase(databaseName: dbName)
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.ConfigureWarnings(w => w.Ignore(InMemoryEventId.TransactionIgnoredWarning))
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.Options;
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return new AppDbContext(options);
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}
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// Feature: vending-machine-app, Property 13: 优惠券兑换正确性
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// 对于任意优惠券兑换操作，如果用户积分 >= 优惠券所需积分，则兑换成功且用户积分减少对应数量；
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// 如果用户积分 < 优惠券所需积分，则兑换失败且用户积分不变。
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// **Validates: Requirements 6.2, 6.3**
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[Property(MaxTest = 100)]
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public bool RedeemCoupon_WhenSufficientPoints_ShouldSucceedAndDeductPoints(
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PositiveInt balanceRaw, PositiveInt costRaw)
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{
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// 确保积分充足：balance >= cost
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var cost = (costRaw.Get % 500) + 1;
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var balance = cost + (balanceRaw.Get % 1000);
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var dbName = $"RedeemSufficient_{Guid.NewGuid()}";
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using var db = CreateDbContext(dbName);
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var logger = Mock.Of<ILogger<CouponService>>();
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var user = new User
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{
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Uid = "testuser00001",
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Phone = "13800000001",
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AreaCode = "+86",
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Nickname = "测试用户",
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PointsBalance = balance
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};
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var template = new CouponTemplate
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{
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Id = "coupon001",
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NameZhCn = "测试优惠券",
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NameZhTw = "測試優惠券",
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NameEn = "Test Coupon",
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Type = CouponType.DirectDiscount,
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DiscountAmount = 5m,
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PointsCost = cost,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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IsActive = true,
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IsStamp = false
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};
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db.Users.Add(user);
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db.CouponTemplates.Add(template);
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db.SaveChanges();
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var service = new CouponService(db, logger);
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var result = service.RedeemCouponAsync("testuser00001", "coupon001").GetAwaiter().GetResult();
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db.Entry(user).Reload();
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// 兑换成功且积分正确扣减
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return result.Success
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&& result.Data != null
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&& result.Data.Redeemed
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&& user.PointsBalance == balance - cost;
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}
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[Property(MaxTest = 100)]
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public bool RedeemCoupon_WhenInsufficientPoints_ShouldFailAndKeepPoints(
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PositiveInt balanceRaw, PositiveInt extraRaw)
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{
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// 确保积分不足：balance < cost
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var balance = (balanceRaw.Get % 100) + 1;
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var cost = balance + (extraRaw.Get % 500) + 1;
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var dbName = $"RedeemInsufficient_{Guid.NewGuid()}";
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using var db = CreateDbContext(dbName);
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var logger = Mock.Of<ILogger<CouponService>>();
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var user = new User
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{
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Uid = "testuser00001",
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Phone = "13800000001",
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AreaCode = "+86",
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Nickname = "测试用户",
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PointsBalance = balance
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};
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var template = new CouponTemplate
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{
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Id = "coupon001",
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NameZhCn = "测试优惠券",
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NameZhTw = "測試優惠券",
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NameEn = "Test Coupon",
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Type = CouponType.DirectDiscount,
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DiscountAmount = 5m,
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PointsCost = cost,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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IsActive = true,
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IsStamp = false
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};
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db.Users.Add(user);
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db.CouponTemplates.Add(template);
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db.SaveChanges();
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var balanceBefore = user.PointsBalance;
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var service = new CouponService(db, logger);
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var result = service.RedeemCouponAsync("testuser00001", "coupon001").GetAwaiter().GetResult();
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db.Entry(user).Reload();
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// 兑换失败且积分不变
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return !result.Success
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&& user.PointsBalance == balanceBefore;
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}
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// Feature: vending-machine-app, Property 14: 优惠券状态分类与标识
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// 对于任意用户优惠券列表，每张优惠券应被正确分类为"可使用""已使用"或"已过期"，
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// 且已使用和已过期的优惠券应带有对应状态标识。
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// **Validates: Requirements 6.6, 6.7**
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[Property(MaxTest = 100)]
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public bool CouponStatus_ShouldBeCorrectlyClassified(PositiveInt seed)
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{
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var dbName = $"CouponStatus_{Guid.NewGuid()}";
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using var db = CreateDbContext(dbName);
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var logger = Mock.Of<ILogger<CouponService>>();
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var user = new User
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{
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Uid = "testuser00001",
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Phone = "13800000001",
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AreaCode = "+86",
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Nickname = "测试用户",
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PointsBalance = 1000
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};
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db.Users.Add(user);
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var template = new CouponTemplate
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{
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Id = "tpl001",
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NameZhCn = "测试券",
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NameZhTw = "測試券",
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NameEn = "Test",
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Type = CouponType.DirectDiscount,
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DiscountAmount = 5m,
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PointsCost = 10,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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IsActive = true,
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IsStamp = false
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};
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db.CouponTemplates.Add(template);
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// 创建三种状态的优惠券
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var available = new UserCoupon
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{
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Id = "uc_avail",
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CouponTemplateId = "tpl001",
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UserId = "testuser00001",
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Status = CouponStatus.Available,
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ExpireAt = DateTime.UtcNow.AddDays(30)
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};
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var used = new UserCoupon
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{
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Id = "uc_used",
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CouponTemplateId = "tpl001",
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UserId = "testuser00001",
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Status = CouponStatus.Used,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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UsedAt = DateTime.UtcNow.AddDays(-1)
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};
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var expired = new UserCoupon
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{
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Id = "uc_expired",
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CouponTemplateId = "tpl001",
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UserId = "testuser00001",
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Status = CouponStatus.Expired,
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ExpireAt = DateTime.UtcNow.AddDays(-1)
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};
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db.UserCoupons.AddRange(available, used, expired);
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db.SaveChanges();
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var service = new CouponService(db, logger);
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var result = service.GetMyCouponsAsync("testuser00001", null, "zh-CN").GetAwaiter().GetResult();
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if (!result.Success || result.Data == null)
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return false;
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var coupons = result.Data;
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// 验证三种状态都存在且正确分类
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var availableCoupon = coupons.FirstOrDefault(c => c.Id == "uc_avail");
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var usedCoupon = coupons.FirstOrDefault(c => c.Id == "uc_used");
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var expiredCoupon = coupons.FirstOrDefault(c => c.Id == "uc_expired");
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return availableCoupon != null && availableCoupon.Status == "available"
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&& usedCoupon != null && usedCoupon.Status == "used"
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&& expiredCoupon != null && expiredCoupon.Status == "expired";
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}
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// Feature: vending-machine-app, Property 15: 印花兑换权限取决于会员状态
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// 对于任意用户点击印花优惠券兑换按钮，会员用户应执行兑换流程，非会员用户应被拒绝。
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// **Validates: Requirements 7.3, 7.4**
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[Property(MaxTest = 100)]
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public bool StampRedeem_MemberShouldSucceed_NonMemberShouldFail(bool isMember, PositiveInt balanceRaw)
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{
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var balance = (balanceRaw.Get % 1000) + 100; // 确保积分充足
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var dbName = $"StampPermission_{Guid.NewGuid()}";
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using var db = CreateDbContext(dbName);
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var logger = Mock.Of<ILogger<CouponService>>();
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var user = new User
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{
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Uid = "testuser00001",
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Phone = "13800000001",
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AreaCode = "+86",
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Nickname = "测试用户",
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IsMember = isMember,
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MembershipType = isMember ? MembershipType.Monthly : MembershipType.None,
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PointsBalance = balance
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};
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var stamp = new CouponTemplate
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{
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Id = "stamp001",
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NameZhCn = "节日印花",
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NameZhTw = "節日印花",
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NameEn = "Holiday Stamp",
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Type = CouponType.DirectDiscount,
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DiscountAmount = 10m,
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PointsCost = 0,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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IsActive = true,
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IsStamp = true
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};
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db.Users.Add(user);
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db.CouponTemplates.Add(stamp);
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db.SaveChanges();
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var service = new CouponService(db, logger);
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var result = service.RedeemStampCouponAsync("testuser00001", "stamp001").GetAwaiter().GetResult();
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if (isMember)
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{
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// 会员应兑换成功
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return result.Success && result.Data != null && result.Data.Redeemed;
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}
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else
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{
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// 非会员应被拒绝
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return !result.Success;
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}
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}
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// Feature: vending-machine-app, Property 16: 印花兑换幂等性
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// 对于任意会员用户和印花优惠券，第一次兑换应成功，后续重复兑换应被拒绝。
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// **Validates: Requirements 7.5, 7.6**
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[Property(MaxTest = 100)]
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public bool StampRedeem_ShouldBeIdempotent_SecondAttemptRejected(PositiveInt seed)
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{
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var dbName = $"StampIdempotent_{Guid.NewGuid()}";
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using var db = CreateDbContext(dbName);
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var logger = Mock.Of<ILogger<CouponService>>();
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var user = new User
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{
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Uid = "testuser00001",
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Phone = "13800000001",
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AreaCode = "+86",
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Nickname = "测试用户",
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IsMember = true,
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MembershipType = MembershipType.Monthly,
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PointsBalance = 1000
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};
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var stamp = new CouponTemplate
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{
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Id = "stamp001",
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NameZhCn = "节日印花",
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NameZhTw = "節日印花",
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NameEn = "Holiday Stamp",
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Type = CouponType.DirectDiscount,
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DiscountAmount = 10m,
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PointsCost = 0,
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ExpireAt = DateTime.UtcNow.AddDays(30),
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IsActive = true,
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IsStamp = true
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};
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db.Users.Add(user);
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db.CouponTemplates.Add(stamp);
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db.SaveChanges();
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var service = new CouponService(db, logger);
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// 第一次兑换应成功
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var firstResult = service.RedeemStampCouponAsync("testuser00001", "stamp001").GetAwaiter().GetResult();
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// 第二次兑换应被拒绝
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var secondResult = service.RedeemStampCouponAsync("testuser00001", "stamp001").GetAwaiter().GetResult();
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return firstResult.Success
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&& firstResult.Data != null
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&& firstResult.Data.Redeemed
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&& !secondResult.Success;
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}
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}
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