"""Unit tests for authentication module.

Author: QA Team
Created: February 2024
Coverage Target: 90%
"""

import pytest


class TestUserAuthenticator:
    """Tests for UserAuthenticator class."""

    def test_hash_password_returns_bytes(self):
        """Password hashing should return bytes."""
        pass

    def test_hash_password_different_salts(self):
        """Same password should produce different hashes due to salt."""
        pass

    def test_verify_password_correct(self):
        """Correct password should verify successfully."""
        pass

    def test_verify_password_incorrect(self):
        """Incorrect password should fail verification."""
        pass

    def test_generate_token_includes_user_id(self):
        """Generated token should contain user_id in payload."""
        pass

    def test_generate_token_includes_role(self):
        """Generated token should contain role in payload."""
        pass

    def test_generate_token_has_expiry(self):
        """Generated token should have expiration time."""
        pass

    def test_verify_token_valid(self):
        """Valid token should be verified successfully."""
        pass

    def test_verify_token_expired(self):
        """Expired token should raise AuthenticationError."""
        pass

    def test_verify_token_invalid_signature(self):
        """Token with invalid signature should be rejected."""
        pass

    def test_rate_limit_under_threshold(self):
        """Requests under rate limit should be allowed."""
        pass

    def test_rate_limit_exceeded(self):
        """Requests exceeding rate limit should be blocked."""
        pass


class TestPermissionManager:
    """Tests for PermissionManager class."""

    @pytest.mark.parametrize(
        "role,permission,expected",
        [
            ("admin", "read", True),
            ("admin", "write", True),
            ("admin", "delete", True),
            ("admin", "manage", True),
            ("editor", "read", True),
            ("editor", "write", True),
            ("editor", "delete", False),
            ("viewer", "read", True),
            ("viewer", "write", False),
            ("guest", "read", True),
            ("guest", "write", False),
        ],
    )
    def test_check_permission(self, role, permission, expected):
        """Test permission checks for various role/permission combinations."""
        pass

    def test_get_user_permissions_admin(self):
        """Admin should have all permissions."""
        pass

    def test_get_user_permissions_multiple_roles(self):
        """User with multiple roles should have combined permissions."""
        pass
