"""Tests for authentication module."""
import pytest
from backend.auth import (
    get_password_hash,
    verify_password,
    create_access_token,
    decode_access_token,
    encrypt_password,
    decrypt_password,
)


def test_password_hashing():
    """Test password hashing and verification."""
    password = "testpassword123"
    hashed = get_password_hash(password)
    
    assert hashed != password
    assert verify_password(password, hashed)
    assert not verify_password("wrongpassword", hashed)


def test_jwt_tokens():
    """Test JWT token creation and decoding."""
    data = {"sub": "testuser"}
    token = create_access_token(data)
    
    assert token is not None
    
    decoded = decode_access_token(token)
    assert decoded is not None
    assert decoded["sub"] == "testuser"


def test_invalid_token():
    """Test decoding invalid token."""
    decoded = decode_access_token("invalid.token.here")
    assert decoded is None


def test_password_encryption():
    """Test password encryption and decryption."""
    password = "secret_password"
    encrypted = encrypt_password(password)
    
    assert encrypted != password
    
    decrypted = decrypt_password(encrypted)
    assert decrypted == password