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59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
import unittest
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import os.path
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from .images import image_path
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from quicktex import RawTexture
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from PIL import Image
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class TestRawTexture(unittest.TestCase):
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boilerplate = Image.open(os.path.join(image_path, 'Boilerplate.png'))
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boilerplate_bytes = boilerplate.tobytes('raw', 'RGBX')
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width, height = boilerplate.size
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size = width * height * 4
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def setUp(self):
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self.tex = RawTexture(self.width, self.height)
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def test_size(self):
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"""Test byte size and image dimensions"""
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self.assertEqual(self.tex.nbytes, self.size, "incorrect texture byte size")
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self.assertEqual(self.tex.width, self.width, "incorrect texture width")
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self.assertEqual(self.tex.height, self.height, "incorrect texture height")
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self.assertEqual(self.tex.size, (self.width, self.height), "incorrect texture dimensions")
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def test_pixels(self):
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"""Test getting and setting pixel values"""
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color1 = (69, 13, 12, 0) # totally random color
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color2 = (19, 142, 93, 44)
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self.tex[0, 0] = color1
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self.tex[-1, -1] = color2
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data = self.tex.tobytes()
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self.assertEqual(self.tex[0, 0], color1)
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self.assertEqual(self.tex[-1, -1], color2)
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self.assertEqual(tuple(data[0:4]), color1)
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self.assertEqual(tuple(data[-4:]), color2)
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with self.assertRaises(IndexError):
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thing = self.tex[self.width, self.height]
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with self.assertRaises(IndexError):
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thing = self.tex[-1 - self.width, -1 - self.height]
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def test_buffer(self):
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"""Test the Buffer protocol implementation for RawTexture"""
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mv = memoryview(self.tex)
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self.assertFalse(mv.readonly, 'buffer is readonly')
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self.assertTrue(mv.c_contiguous, 'buffer is not contiguous')
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self.assertEqual(mv.nbytes, self.size, 'buffer is the wrong size')
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self.assertEqual(mv.format, 'B', 'buffer has the wrong format')
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mv[:] = self.boilerplate_bytes
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self.assertEqual(mv.tobytes(), self.boilerplate_bytes, 'incorrect buffer data')
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def test_frombytes(self):
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"""Test the frombytes factory function"""
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bytetex = RawTexture.frombytes(self.boilerplate_bytes, *self.boilerplate.size)
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self.assertEqual(self.boilerplate_bytes, bytetex.tobytes(), 'Incorrect bytes after writing to buffer')
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