books/backend/Books.Api.Tests/Infrastructure/TestAuthenticationHandler.cs

using System.Security.Claims;
using System.Text.Encodings.Web;
using Microsoft.AspNetCore.Authentication;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;

namespace Books.Api.Tests.Infrastructure;

/// <summary>
/// Test authentication handler that auto-authenticates all requests.
/// Used in integration tests to simulate an authenticated user.
/// </summary>
public class TestAuthenticationHandler : AuthenticationHandler<AuthenticationSchemeOptions>
{
    public const string TestScheme = "TestScheme";
    public const string TestUserId = "test-user-001";
    public const string TestUserEmail = "test@example.com";
    public const string TestUserName = "Test User";

    public TestAuthenticationHandler(
        IOptionsMonitor<AuthenticationSchemeOptions> options,
        ILoggerFactory logger,
        UrlEncoder encoder)
        : base(options, logger, encoder)
    {
    }

    protected override Task<AuthenticateResult> HandleAuthenticateAsync()
    {
        var claims = new[]
        {
            new Claim(ClaimTypes.NameIdentifier, TestUserId),
            new Claim(ClaimTypes.Email, TestUserEmail),
            new Claim(ClaimTypes.Name, TestUserName),
            new Claim(ClaimTypes.Role, "user"),
        };

        var identity = new ClaimsIdentity(claims, TestScheme);
        var principal = new ClaimsPrincipal(identity);
        var ticket = new AuthenticationTicket(principal, TestScheme);

        return Task.FromResult(AuthenticateResult.Success(ticket));
    }
}