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https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
from .helper import PillowTestCase
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from PIL import Image, FontFile, PcfFontFile
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from PIL import ImageFont, ImageDraw
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from PIL._util import py3
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codecs = dir(Image.core)
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fontname = "Tests/fonts/10x20-ISO8859-1.pcf"
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message = "hello, world"
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class TestFontPcf(PillowTestCase):
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def setUp(self):
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if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
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self.skipTest("zlib support not available")
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def save_font(self):
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with open(fontname, "rb") as test_file:
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font = PcfFontFile.PcfFontFile(test_file)
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self.assertIsInstance(font, FontFile.FontFile)
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# check the number of characters in the font
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self.assertEqual(len([_f for _f in font.glyph if _f]), 223)
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tempname = self.tempfile("temp.pil")
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self.addCleanup(self.delete_tempfile, tempname[:-4]+'.pbm')
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font.save(tempname)
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with Image.open(tempname.replace('.pil', '.pbm')) as loaded:
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with Image.open('Tests/fonts/10x20.pbm') as target:
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self.assert_image_equal(loaded, target)
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with open(tempname, 'rb') as f_loaded:
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with open('Tests/fonts/10x20.pil', 'rb') as f_target:
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self.assertEqual(f_loaded.read(), f_target.read())
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return tempname
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def test_sanity(self):
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self.save_font()
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def test_invalid_file(self):
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with open("Tests/images/flower.jpg", "rb") as fp:
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self.assertRaises(SyntaxError, PcfFontFile.PcfFontFile, fp)
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def test_draw(self):
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tempname = self.save_font()
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font = ImageFont.load(tempname)
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im = Image.new("L", (130, 30), "white")
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draw = ImageDraw.Draw(im)
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draw.text((0, 0), message, 'black', font=font)
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with Image.open('Tests/images/test_draw_pbm_target.png') as target:
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self.assert_image_similar(im, target, 0)
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def test_textsize(self):
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tempname = self.save_font()
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font = ImageFont.load(tempname)
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for i in range(255):
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(dx, dy) = font.getsize(chr(i))
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self.assertEqual(dy, 20)
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self.assertIn(dx, (0, 10))
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for l in range(len(message)):
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msg = message[:l+1]
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self.assertEqual(font.getsize(msg), (len(msg)*10, 20))
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def _test_high_characters(self, message):
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tempname = self.save_font()
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font = ImageFont.load(tempname)
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im = Image.new("L", (750, 30), "white")
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draw = ImageDraw.Draw(im)
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draw.text((0, 0), message, "black", font=font)
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with Image.open('Tests/images/high_ascii_chars.png') as target:
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self.assert_image_similar(im, target, 0)
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def test_high_characters(self):
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message = "".join(chr(i+1) for i in range(140, 232))
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self._test_high_characters(message)
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# accept bytes instances in Py3.
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if py3:
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self._test_high_characters(message.encode('latin1'))
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