import pytest
import numpy as np
from PIL import Image
import gradio as gr

# Mock test for the ALPR system
def test_requirements_import():
    """Test that all required packages can be imported"""
    try:
        import cv2
        import numpy as np
        import gradio as gr
        from PIL import Image
        from fast_alpr import ALPR
        assert True
    except ImportError as e:
        pytest.fail(f"Failed to import required package: {e}")

def test_image_processing():
    """Test basic image processing functionality"""
    # Create a dummy image
    dummy_img = np.random.randint(0, 255, (100, 100, 3), dtype=np.uint8)
    
    # Test PIL conversion
    pil_img = Image.fromarray(dummy_img)
    assert pil_img.size == (100, 100)
    
    # Test numpy conversion back
    img_array = np.array(pil_img)
    assert img_array.shape == (100, 100, 3)

def test_streamlit_components():
    """Test that Streamlit components can be created"""
    # This is a basic test to ensure the app structure is valid
    assert True