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86 lines
2.9 KiB
Python
86 lines
2.9 KiB
Python
from helper import unittest, 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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if __name__ == '__main__':
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unittest.main()
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