accounting-system/backend/tests/InvoiceMaster.IntegrationTests/Controllers/AuthControllerTests.cs

using InvoiceMaster.IntegrationTests.Factories;
using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using Xunit;
using FluentAssertions;

namespace InvoiceMaster.IntegrationTests.Controllers;

public class AuthControllerTests : IClassFixture<CustomWebApplicationFactory>
{
    private readonly CustomWebApplicationFactory _factory;
    private readonly HttpClient _client;

    public AuthControllerTests(CustomWebApplicationFactory factory)
    {
        _factory = factory;
        _client = factory.CreateClient();
    }

    [Fact]
    public async Task Register_WithValidData_ShouldReturnSuccess()
    {
        var request = new
        {
            email = $"test{Guid.NewGuid()}@example.com",
            password = "Password123!",
            fullName = "Test User"
        };

        var response = await _client.PostAsJsonAsync("/api/v1/auth/register", request);
        var content = await response.Content.ReadAsStringAsync();

        response.StatusCode.Should().Be(HttpStatusCode.OK);
        content.Should().Contain("success\"");
        content.Should().Contain("accessToken\"");
    }

    [Fact]
    public async Task Register_WithInvalidEmail_ShouldReturnBadRequest()
    {
        var request = new
        {
            email = "invalid-email",
            password = "Password123!"
        };

        var response = await _client.PostAsJsonAsync("/api/v1/auth/register", request);

        response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
    }

    [Fact]
    public async Task Login_WithValidCredentials_ShouldReturnTokens()
    {
        var email = $"login{Guid.NewGuid()}@example.com";
        var password = "Password123!";

        var registerRequest = new { email, password, fullName = "Test User" };
        await _client.PostAsJsonAsync("/api/v1/auth/register", registerRequest);

        var loginRequest = new { email, password };
        var response = await _client.PostAsJsonAsync("/api/v1/auth/login", loginRequest);
        var content = await response.Content.ReadAsStringAsync();

        response.StatusCode.Should().Be(HttpStatusCode.OK);
        content.Should().Contain("accessToken\"");
        content.Should().Contain("refreshToken\"");
    }

    [Fact]
    public async Task Login_WithInvalidCredentials_ShouldReturnUnauthorized()
    {
        var request = new
        {
            email = "nonexistent@example.com",
            password = "WrongPassword"
        };

        var response = await _client.PostAsJsonAsync("/api/v1/auth/login", request);

        response.StatusCode.Should().Be(HttpStatusCode.Unauthorized);
    }

    [Fact]
    public async Task HealthCheck_ShouldReturnHealthy()
    {
        var response = await _client.GetAsync("/api/v1/health");
        var content = await response.Content.ReadAsStringAsync();

        response.StatusCode.Should().Be(HttpStatusCode.OK);
        content.Should().Contain("healthy");
    }
}