211 lines
7.9 KiB
Python
211 lines
7.9 KiB
Python
from __future__ import print_function, division, absolute_import
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from fontTools.misc.py23 import *
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from fontTools.ttLib import TTFont
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from fontTools.varLib import build
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from fontTools.varLib.interpolate_layout import interpolate_layout
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from fontTools.varLib.interpolate_layout import main as interpolate_layout_main
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import difflib
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import os
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import shutil
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import sys
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import tempfile
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import unittest
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class InterpolateLayoutTest(unittest.TestCase):
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def __init__(self, methodName):
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unittest.TestCase.__init__(self, methodName)
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# Python 3 renamed assertRaisesRegexp to assertRaisesRegex,
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# and fires deprecation warnings if a program uses the old name.
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if not hasattr(self, "assertRaisesRegex"):
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self.assertRaisesRegex = self.assertRaisesRegexp
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def setUp(self):
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self.tempdir = None
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self.num_tempfiles = 0
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def tearDown(self):
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if self.tempdir:
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shutil.rmtree(self.tempdir)
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@staticmethod
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def get_test_input(test_file_or_folder):
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path, _ = os.path.split(__file__)
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return os.path.join(path, "data", test_file_or_folder)
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@staticmethod
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def get_test_output(test_file_or_folder):
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path, _ = os.path.split(__file__)
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return os.path.join(path, "data", "test_results", test_file_or_folder)
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@staticmethod
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def get_file_list(folder, suffix, prefix=''):
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all_files = os.listdir(folder)
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file_list = []
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for p in all_files:
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if p.startswith(prefix) and p.endswith(suffix):
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file_list.append(os.path.abspath(os.path.join(folder, p)))
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return file_list
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def temp_path(self, suffix):
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self.temp_dir()
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self.num_tempfiles += 1
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return os.path.join(self.tempdir,
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"tmp%d%s" % (self.num_tempfiles, suffix))
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def temp_dir(self):
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if not self.tempdir:
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self.tempdir = tempfile.mkdtemp()
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def read_ttx(self, path):
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lines = []
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with open(path, "r", encoding="utf-8") as ttx:
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for line in ttx.readlines():
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# Elide ttFont attributes because ttLibVersion may change,
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# and use os-native line separators so we can run difflib.
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if line.startswith("<ttFont "):
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lines.append("<ttFont>" + os.linesep)
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else:
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lines.append(line.rstrip() + os.linesep)
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return lines
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def expect_ttx(self, font, expected_ttx, tables):
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path = self.temp_path(suffix=".ttx")
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font.saveXML(path, tables=tables)
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actual = self.read_ttx(path)
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expected = self.read_ttx(expected_ttx)
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if actual != expected:
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for line in difflib.unified_diff(
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expected, actual, fromfile=expected_ttx, tofile=path):
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sys.stdout.write(line)
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self.fail("TTX output is different from expected")
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def check_ttx_dump(self, font, expected_ttx, tables, suffix):
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"""Ensure the TTX dump is the same after saving and reloading the font."""
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path = self.temp_path(suffix=suffix)
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font.save(path)
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self.expect_ttx(TTFont(path), expected_ttx, tables)
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def compile_font(self, path, suffix, temp_dir):
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ttx_filename = os.path.basename(path)
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savepath = os.path.join(temp_dir, ttx_filename.replace('.ttx', suffix))
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font = TTFont(recalcBBoxes=False, recalcTimestamp=False)
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font.importXML(path)
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font.save(savepath, reorderTables=None)
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return font, savepath
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# -----
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# Tests
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# -----
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def test_varlib_interpolate_layout_GSUB_only_ttf(self):
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"""Only GSUB, and only in the base master.
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The variable font will inherit the GSUB table from the
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base master.
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"""
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suffix = '.ttf'
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ds_path = self.get_test_input('InterpolateLayout.designspace')
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_interpolatable_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily2-')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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finder = lambda s: s.replace(ufo_dir, self.tempdir).replace('.ufo', suffix)
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instfont = interpolate_layout(ds_path, {'weight': 500}, finder)
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tables = ['GSUB']
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expected_ttx_path = self.get_test_output('InterpolateLayout.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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self.check_ttx_dump(instfont, expected_ttx_path, tables, suffix)
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def test_varlib_interpolate_layout_no_GSUB_ttf(self):
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"""The base master has no GSUB table.
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The variable font will end up without a GSUB table.
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"""
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suffix = '.ttf'
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ds_path = self.get_test_input('InterpolateLayout2.designspace')
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_interpolatable_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily2-')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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finder = lambda s: s.replace(ufo_dir, self.tempdir).replace('.ufo', suffix)
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instfont = interpolate_layout(ds_path, {'weight': 500}, finder)
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tables = ['GSUB']
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expected_ttx_path = self.get_test_output('InterpolateLayout2.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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self.check_ttx_dump(instfont, expected_ttx_path, tables, suffix)
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def test_varlib_interpolate_layout_GSUB_only_no_axes_ttf(self):
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"""Only GSUB, and only in the base master.
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Designspace file has no <axes> element.
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The variable font will inherit the GSUB table from the
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base master.
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"""
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suffix = '.ttf'
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ds_path = self.get_test_input('InterpolateLayout3.designspace')
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_interpolatable_ttf')
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self.temp_dir()
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily2-')
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for path in ttx_paths:
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self.compile_font(path, suffix, self.tempdir)
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finder = lambda s: s.replace(ufo_dir, self.tempdir).replace('.ufo', suffix)
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instfont = interpolate_layout(ds_path, {'weight': 500}, finder)
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tables = ['GSUB']
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expected_ttx_path = self.get_test_output('InterpolateLayout.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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self.check_ttx_dump(instfont, expected_ttx_path, tables, suffix)
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def test_varlib_interpolate_layout_main_ttf(self):
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"""Mostly for testing varLib.interpolate_layout.main()
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"""
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suffix = '.ttf'
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ds_path = self.get_test_input('Build.designspace')
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ufo_dir = self.get_test_input('master_ufo')
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ttx_dir = self.get_test_input('master_ttx_interpolatable_ttf')
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self.temp_dir()
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ttf_dir = os.path.join(self.tempdir, 'master_ttf_interpolatable')
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os.makedirs(ttf_dir)
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ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily-')
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for path in ttx_paths:
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self.compile_font(path, suffix, ttf_dir)
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finder = lambda s: s.replace(ufo_dir, ttf_dir).replace('.ufo', suffix)
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varfont, _, _ = build(ds_path, finder)
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varfont_name = 'InterpolateLayoutMain'
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varfont_path = os.path.join(self.tempdir, varfont_name + suffix)
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varfont.save(varfont_path)
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ds_copy = os.path.splitext(varfont_path)[0] + '.designspace'
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shutil.copy2(ds_path, ds_copy)
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args = [ds_copy, 'wght=500', 'cntr=50']
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interpolate_layout_main(args)
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instfont_path = os.path.splitext(varfont_path)[0] + '-instance' + suffix
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instfont = TTFont(instfont_path)
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tables = [table_tag for table_tag in instfont.keys() if table_tag != 'head']
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expected_ttx_path = self.get_test_output(varfont_name + '.ttx')
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self.expect_ttx(instfont, expected_ttx_path, tables)
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if __name__ == "__main__":
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sys.exit(unittest.main())
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