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4f185329f4
This adds a new test decorator: skip_unless_feature(). The argument is the same as passed to features.check(). If the feature is not supported, the test will be skipped. This removes several kinds of boilerplate copied and pasted around tests so test feature checking is handled and displayed more consistently. Refs #4193
78 lines
2.7 KiB
Python
78 lines
2.7 KiB
Python
from PIL import FontFile, Image, ImageDraw, ImageFont, PcfFontFile
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from .helper import (
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PillowTestCase,
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assert_image_equal,
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assert_image_similar,
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skip_unless_feature,
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)
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fontname = "Tests/fonts/10x20-ISO8859-1.pcf"
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message = "hello, world"
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@skip_unless_feature("zlib")
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class TestFontPcf(PillowTestCase):
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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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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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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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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.
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self._test_high_characters(message.encode("latin1"))
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