quicktex/tests/test_texture.py

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import unittest
import nose
import quicktex
import images
import tempfile
from PIL import Image
class TestRawTexture(unittest.TestCase):
def setUp(self):
self.width = 1024
self.height = 1024
self.texture = quicktex.RawTexture(self.width, self.height)
self.boilerplate = Image.open(images.image_path + '/Boilerplate.png')
def test_size(self):
"""test byte size and image dimensions"""
self.assertEqual(self.texture.size, self.width * self.height * 4, "incorrect texture byte size")
self.assertEqual(self.texture.width, self.width, "incorrect texture width")
self.assertEqual(self.texture.height, self.height, "incorrect texture height")
self.assertEqual(self.texture.dimensions, (self.width, self.height), "incorrect texture dimension tuple")
def test_pixels(self):
"""Test get_ and set_pixel methods for RawTexture"""
color1 = (69, 13, 12, 0) # totally random color
color2 = (19, 142, 93, 44)
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self.texture[0, 0] = color1
self.texture[-1, -1] = color2
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data = self.texture.tobytes()
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self.assertEqual(self.texture[0, 0], color1)
self.assertEqual(self.texture[-1, -1], color2)
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self.assertEqual(tuple(data[0:4]), color1)
self.assertEqual(tuple(data[-4:]), color2)
def test_buffer(self):
"""Test the Buffer protocol implementation for RawTexture"""
with tempfile.TemporaryFile('r+b') as fp:
fp.write(self.boilerplate.tobytes('raw', 'RGBX'))
fp.seek(0)
bytes_read = fp.readinto(self.texture)
self.assertEqual(bytes_read, self.texture.size, 'buffer over/underrun')
self.assertEqual(self.boilerplate.tobytes('raw', 'RGBX'), self.texture.tobytes(), 'Incorrect bytes after writing to buffer')
self.assertEqual(bytes(self.texture), self.texture.tobytes(), "Incorrect bytes reading from buffer")
def test_factory(self):
"""Test the frombytes factory function"""
bytetex = quicktex.RawTexture.frombytes(self.boilerplate.tobytes('raw', 'RGBX'), *self.boilerplate.size)
self.assertEqual(self.boilerplate.tobytes('raw', 'RGBX'), bytetex.tobytes(), 'Incorrect bytes after writing to buffer')
if __name__ == '__main__':
nose.main()