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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017-18 Richard Hull and contributors
# See LICENSE.rst for details.
"""
Tests for the :py:class:`luma.core.render.canvas` class.
"""
import pytest
from PIL import Image
from luma.core.device import dummy
from luma.core.render import canvas
from helpers import get_reference_image, assert_identical_image
def test_canvas_background():
pytest.skip()
img_path = get_reference_image('background.png')
with open(get_reference_image('dither.png'), 'rb') as p1:
with open(img_path, 'rb') as p2:
bgnd = Image.open(p1)
reference = Image.open(p2)
device = dummy()
with canvas(device, background=bgnd) as draw:
draw.rectangle((20, 15, device.width - 20, device.height - 15),
fill='black', outline='white')
draw.text((36, 22), 'Background', fill='white')
draw.text((52, 32), 'Test', fill='white')
assert_identical_image(reference, device.image, img_path)
def test_canvas_wrong_size():
with pytest.raises(AssertionError):
canvas(dummy(), background=Image.new('RGB', (23, 97)))
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