food-market/tests/food-market.IntegrationTests/PlanSignupTests.cs

using System.Net.Http.Json;
using System.Text.Json;
using FluentAssertions;
using foodmarket.IntegrationTests.Support;
using Xunit;

namespace foodmarket.IntegrationTests;

/// <summary>Регистрация сохраняет выбранный тариф и бесплатный период (90 дней),
/// а для «Бизнес» — конфигурацию конструктора. Settings-эндпоинт отдаёт их
/// read-only для показа в кабинете владельца. Биллинга/блокировки нет.
/// Решение владельца 12.10.</summary>
[Collection(ApiCollection.Name)]
public class PlanSignupTests
{
    private readonly ApiFactory _factory;
    public PlanSignupTests(ApiFactory factory) => _factory = factory;

    private async Task<JsonElement> SignupWithPlanAndGetSettingsAsync(ApiActor api, string slug, object body)
    {
        var resp = await api.Http.PostAsJsonAsync("/api/auth/signup", body);
        resp.IsSuccessStatusCode.Should().BeTrue(await resp.Content.ReadAsStringAsync());
        api.UseToken(await api.TokenAsync($"{slug}@example.kz", "Passw0rd!"));
        return await api.GetJsonAsync("/api/organization/settings");
    }

    [Fact]
    public async Task Business_signup_saves_plan_trial_and_config()
    {
        var api = new ApiActor(_factory.CreateClient());
        var slug = $"plan-biz-{Guid.NewGuid():N}";
        var s = await SignupWithPlanAndGetSettingsAsync(api, slug, new
        {
            email = $"{slug}@example.kz", password = "Passw0rd!", organizationName = $"Org {slug}",
            phone = "+77010000000", plan = "business",
            shops = 3, cashes = 4, warehouses = 2, employees = 25,
        });

        s.GetProperty("plan").GetString().Should().Be("business");
        s.GetProperty("planShops").GetInt32().Should().Be(3);
        s.GetProperty("planCashes").GetInt32().Should().Be(4);
        s.GetProperty("planWarehouses").GetInt32().Should().Be(2);
        s.GetProperty("planEmployees").GetInt32().Should().Be(25);

        var trial = s.GetProperty("freeTrialEndsAt").GetDateTime();
        var expected = DateTime.UtcNow.AddDays(90);
        trial.Should().BeCloseTo(expected, TimeSpan.FromHours(1), "бесплатный период = регистрация + 90 дней");
    }

    [Fact]
    public async Task Start_signup_saves_plan_without_config()
    {
        var api = new ApiActor(_factory.CreateClient());
        var slug = $"plan-start-{Guid.NewGuid():N}";
        var s = await SignupWithPlanAndGetSettingsAsync(api, slug, new
        {
            email = $"{slug}@example.kz", password = "Passw0rd!", organizationName = $"Org {slug}",
            phone = "+77010000000", plan = "start",
        });

        s.GetProperty("plan").GetString().Should().Be("start");
        s.GetProperty("freeTrialEndsAt").ValueKind.Should().Be(JsonValueKind.String, "дата бесплатного периода проставлена");
        // Конфигурация «Бизнес» не относится к «Старт» — поля null.
        s.GetProperty("planShops").ValueKind.Should().Be(JsonValueKind.Null);
        s.GetProperty("planEmployees").ValueKind.Should().Be(JsonValueKind.Null);
    }

    [Fact]
    public async Task Unknown_plan_falls_back_to_start()
    {
        var api = new ApiActor(_factory.CreateClient());
        var slug = $"plan-unk-{Guid.NewGuid():N}";
        var s = await SignupWithPlanAndGetSettingsAsync(api, slug, new
        {
            email = $"{slug}@example.kz", password = "Passw0rd!", organizationName = $"Org {slug}",
            phone = "+77010000000", plan = "enterprise-xxl",
        });

        s.GetProperty("plan").GetString().Should().Be("start", "неизвестный тариф нормализуется к «start»");
    }
}