Pillow/Tests/test_font_pcf.py
2019-10-07 14:30:59 +03:00

78 lines
2.8 KiB
Python

from PIL import FontFile, Image, ImageDraw, ImageFont, PcfFontFile
from .helper import PillowTestCase
codecs = dir(Image.core)
fontname = "Tests/fonts/10x20-ISO8859-1.pcf"
message = "hello, world"
class TestFontPcf(PillowTestCase):
def setUp(self):
if "zip_encoder" not in codecs or "zip_decoder" not in codecs:
self.skipTest("zlib support not available")
def save_font(self):
with open(fontname, "rb") as test_file:
font = PcfFontFile.PcfFontFile(test_file)
self.assertIsInstance(font, FontFile.FontFile)
# check the number of characters in the font
self.assertEqual(len([_f for _f in font.glyph if _f]), 223)
tempname = self.tempfile("temp.pil")
self.addCleanup(self.delete_tempfile, tempname[:-4] + ".pbm")
font.save(tempname)
with Image.open(tempname.replace(".pil", ".pbm")) as loaded:
with Image.open("Tests/fonts/10x20.pbm") as target:
self.assert_image_equal(loaded, target)
with open(tempname, "rb") as f_loaded:
with open("Tests/fonts/10x20.pil", "rb") as f_target:
self.assertEqual(f_loaded.read(), f_target.read())
return tempname
def test_sanity(self):
self.save_font()
def test_invalid_file(self):
with open("Tests/images/flower.jpg", "rb") as fp:
self.assertRaises(SyntaxError, PcfFontFile.PcfFontFile, fp)
def test_draw(self):
tempname = self.save_font()
font = ImageFont.load(tempname)
im = Image.new("L", (130, 30), "white")
draw = ImageDraw.Draw(im)
draw.text((0, 0), message, "black", font=font)
with Image.open("Tests/images/test_draw_pbm_target.png") as target:
self.assert_image_similar(im, target, 0)
def test_textsize(self):
tempname = self.save_font()
font = ImageFont.load(tempname)
for i in range(255):
(dx, dy) = font.getsize(chr(i))
self.assertEqual(dy, 20)
self.assertIn(dx, (0, 10))
for l in range(len(message)):
msg = message[: l + 1]
self.assertEqual(font.getsize(msg), (len(msg) * 10, 20))
def _test_high_characters(self, message):
tempname = self.save_font()
font = ImageFont.load(tempname)
im = Image.new("L", (750, 30), "white")
draw = ImageDraw.Draw(im)
draw.text((0, 0), message, "black", font=font)
with Image.open("Tests/images/high_ascii_chars.png") as target:
self.assert_image_similar(im, target, 0)
def test_high_characters(self):
message = "".join(chr(i + 1) for i in range(140, 232))
self._test_high_characters(message)
# accept bytes instances.
self._test_high_characters(message.encode("latin1"))