| from fontTools.ttLib import TTFont |
| from fontTools.ttLib.scaleUpem import scale_upem |
| import difflib |
| import os |
| import shutil |
| import sys |
| import tempfile |
| import unittest |
| import pytest |
| |
| |
| class ScaleUpemTest(unittest.TestCase): |
| def setUp(self): |
| self.tempdir = None |
| self.num_tempfiles = 0 |
| |
| def tearDown(self): |
| if self.tempdir: |
| shutil.rmtree(self.tempdir) |
| |
| @staticmethod |
| def get_path(test_file_or_folder): |
| parent_dir = os.path.dirname(__file__) |
| return os.path.join(parent_dir, "data", test_file_or_folder) |
| |
| def temp_path(self, suffix): |
| self.temp_dir() |
| self.num_tempfiles += 1 |
| return os.path.join(self.tempdir, "tmp%d%s" % (self.num_tempfiles, suffix)) |
| |
| def temp_dir(self): |
| if not self.tempdir: |
| self.tempdir = tempfile.mkdtemp() |
| |
| def read_ttx(self, path): |
| lines = [] |
| with open(path, "r", encoding="utf-8") as ttx: |
| for line in ttx.readlines(): |
| # Elide ttFont attributes because ttLibVersion may change. |
| if line.startswith("<ttFont "): |
| lines.append("<ttFont>\n") |
| else: |
| lines.append(line.rstrip() + "\n") |
| return lines |
| |
| def expect_ttx(self, font, expected_ttx, tables): |
| path = self.temp_path(suffix=".ttx") |
| font.saveXML(path, tables=tables) |
| actual = self.read_ttx(path) |
| expected = self.read_ttx(expected_ttx) |
| if actual != expected: |
| for line in difflib.unified_diff( |
| expected, actual, fromfile=expected_ttx, tofile=path |
| ): |
| sys.stdout.write(line) |
| self.fail("TTX output is different from expected") |
| |
| def test_scale_upem_ttf(self): |
| font = TTFont(self.get_path("I.ttf")) |
| tables = [table_tag for table_tag in font.keys() if table_tag != "head"] |
| |
| scale_upem(font, 512) |
| |
| expected_ttx_path = self.get_path("I-512upem.ttx") |
| self.expect_ttx(font, expected_ttx_path, tables) |
| |
| def test_scale_upem_varComposite(self): |
| font = TTFont(self.get_path("varc-ac00-ac01.ttf")) |
| tables = [table_tag for table_tag in font.keys() if table_tag != "head"] |
| |
| scale_upem(font, 500) |
| |
| expected_ttx_path = self.get_path("varc-ac00-ac01-500upem.ttx") |
| self.expect_ttx(font, expected_ttx_path, tables) |
| |
| # Scale our other varComposite font as well; without checking the expected |
| font = TTFont(self.get_path("varc-6868.ttf")) |
| scale_upem(font, 500) |
| |
| def test_scale_upem_otf(self): |
| # Just test that it doesn't crash |
| |
| font = TTFont(self.get_path("TestVGID-Regular.otf")) |
| |
| scale_upem(font, 500) |
