| from fontTools.ttLib import TTFont |
| from fontTools.varLib import build |
| from fontTools.varLib.mutator import main as mutator |
| from fontTools.varLib.mutator import instantiateVariableFont as make_instance |
| import difflib |
| import os |
| import shutil |
| import sys |
| import tempfile |
| import unittest |
| |
| |
| class MutatorTest(unittest.TestCase): |
| def __init__(self, methodName): |
| unittest.TestCase.__init__(self, methodName) |
| # Python 3 renamed assertRaisesRegexp to assertRaisesRegex, |
| # and fires deprecation warnings if a program uses the old name. |
| if not hasattr(self, "assertRaisesRegex"): |
| self.assertRaisesRegex = self.assertRaisesRegexp |
| |
| def setUp(self): |
| self.tempdir = None |
| self.num_tempfiles = 0 |
| |
| def tearDown(self): |
| if self.tempdir: |
| shutil.rmtree(self.tempdir) |
| |
| @staticmethod |
| def get_test_input(test_file_or_folder): |
| path, _ = os.path.split(__file__) |
| return os.path.join(path, "data", test_file_or_folder) |
| |
| @staticmethod |
| def get_test_output(test_file_or_folder): |
| path, _ = os.path.split(__file__) |
| return os.path.join(path, "data", "test_results", test_file_or_folder) |
| |
| @staticmethod |
| def get_file_list(folder, suffix, prefix=""): |
| all_files = os.listdir(folder) |
| file_list = [] |
| for p in all_files: |
| if p.startswith(prefix) and p.endswith(suffix): |
| file_list.append(os.path.abspath(os.path.join(folder, p))) |
| return file_list |
| |
| 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 compile_font(self, path, suffix, temp_dir): |
| ttx_filename = os.path.basename(path) |
| savepath = os.path.join(temp_dir, ttx_filename.replace(".ttx", suffix)) |
| font = TTFont(recalcBBoxes=False, recalcTimestamp=False) |
| font.importXML(path) |
| font.save(savepath, reorderTables=None) |
| return font, savepath |
| |
| # ----- |
| # Tests |
| # ----- |
| |
| def test_varlib_mutator_ttf(self): |
| suffix = ".ttf" |
| ds_path = self.get_test_input("Build.designspace") |
| ufo_dir = self.get_test_input("master_ufo") |
| ttx_dir = self.get_test_input("master_ttx_interpolatable_ttf") |
| |
| self.temp_dir() |
| ttx_paths = self.get_file_list(ttx_dir, ".ttx", "TestFamily-") |
| for path in ttx_paths: |
| self.compile_font(path, suffix, self.tempdir) |
| |
| finder = lambda s: s.replace(ufo_dir, self.tempdir).replace(".ufo", suffix) |
| varfont, _, _ = build(ds_path, finder) |
| varfont_name = "Mutator" |
| varfont_path = os.path.join(self.tempdir, varfont_name + suffix) |
| varfont.save(varfont_path) |
| |
| args = [varfont_path, "wght=500", "cntr=50"] |
| mutator(args) |
| |
| instfont_path = os.path.splitext(varfont_path)[0] + "-instance" + suffix |
| instfont = TTFont(instfont_path) |
| tables = [table_tag for table_tag in instfont.keys() if table_tag != "head"] |
| expected_ttx_path = self.get_test_output(varfont_name + ".ttx") |
| self.expect_ttx(instfont, expected_ttx_path, tables) |
| |
| def test_varlib_mutator_getvar_ttf(self): |
| suffix = ".ttf" |
| ttx_dir = self.get_test_input("master_ttx_getvar_ttf") |
| |
| self.temp_dir() |
| ttx_paths = self.get_file_list(ttx_dir, ".ttx", "Mutator_Getvar") |
| for path in ttx_paths: |
| self.compile_font(path, suffix, self.tempdir) |
| |
| varfont_name = "Mutator_Getvar" |
| varfont_path = os.path.join(self.tempdir, varfont_name + suffix) |
| |
| args = [varfont_path, "wdth=80", "ASCN=628"] |
| mutator(args) |
| |
| instfont_path = os.path.splitext(varfont_path)[0] + "-instance" + suffix |
| instfont = TTFont(instfont_path) |
| tables = [table_tag for table_tag in instfont.keys() if table_tag != "head"] |
| expected_ttx_path = self.get_test_output(varfont_name + "-instance.ttx") |
| self.expect_ttx(instfont, expected_ttx_path, tables) |
| |
| def test_varlib_mutator_iup_ttf(self): |
| suffix = ".ttf" |
| ufo_dir = self.get_test_input("master_ufo") |
| ttx_dir = self.get_test_input("master_ttx_varfont_ttf") |
| |
| self.temp_dir() |
| ttx_paths = self.get_file_list(ttx_dir, ".ttx", "Mutator_IUP") |
| for path in ttx_paths: |
| self.compile_font(path, suffix, self.tempdir) |
| |
| varfont_name = "Mutator_IUP" |
| varfont_path = os.path.join(self.tempdir, varfont_name + suffix) |
| |
| args = [varfont_path, "wdth=80", "ASCN=628"] |
| mutator(args) |
| |
| instfont_path = os.path.splitext(varfont_path)[0] + "-instance" + suffix |
| instfont = TTFont(instfont_path) |
| tables = [table_tag for table_tag in instfont.keys() if table_tag != "head"] |
| expected_ttx_path = self.get_test_output(varfont_name + "-instance.ttx") |
| self.expect_ttx(instfont, expected_ttx_path, tables) |
| |
| def test_varlib_mutator_CFF2(self): |
| suffix = ".otf" |
| ttx_dir = self.get_test_input("master_ttx_varfont_otf") |
| |
| self.temp_dir() |
| ttx_paths = self.get_file_list(ttx_dir, ".ttx", "TestCFF2VF") |
| for path in ttx_paths: |
| self.compile_font(path, suffix, self.tempdir) |
| |
| varfont_name = "TestCFF2VF" |
| varfont_path = os.path.join(self.tempdir, varfont_name + suffix) |
| |
| expected_ttx_name = "InterpolateTestCFF2VF" |
| tables = ["hmtx", "CFF2"] |
| loc = {"wght": float(200)} |
| |
| varfont = TTFont(varfont_path) |
| new_font = make_instance(varfont, loc) |
| expected_ttx_path = self.get_test_output(expected_ttx_name + ".ttx") |
| self.expect_ttx(new_font, expected_ttx_path, tables) |
| |
| |
| if __name__ == "__main__": |
| sys.exit(unittest.main()) |