import os
import pytest
from naramotion import Image, Format, Context, Rect


def test_image_creation():
    img = Image(400, 300, Format.PRGB32)
    assert img.width == 400
    assert img.height == 300
    assert img.size == (400, 300)
    assert img.format == Format.PRGB32
    assert not img.is_empty()


def test_image_file_io(tmp_path):
    filepath = str(tmp_path / "test_io.png")
    img = Image(200, 200, Format.PRGB32)

    with Context(img) as ctx:
        ctx.fill_all("white")
        ctx.fill_circle(100, 100, 50, "red")

    img.write_to_file(filepath)
    assert os.path.exists(filepath)
    assert os.path.getsize(filepath) > 0

    loaded = Image.from_file(filepath)
    assert loaded.width == 200
    assert loaded.height == 200
    assert loaded.format == Format.PRGB32


def test_image_memory_bytes():
    img = Image(100, 100, Format.PRGB32)
    with Context(img) as ctx:
        ctx.fill_all(0xFF00FF00)  # Green

    data = img.to_data()
    assert isinstance(data, bytes)
    assert len(data) > 0

    loaded = Image.from_data(data)
    assert loaded.width == 100
    assert loaded.height == 100


def test_image_convert():
    img = Image(100, 100, Format.PRGB32)
    assert img.format == Format.PRGB32
    img.convert(Format.XRGB32)
    assert img.format == Format.XRGB32