[TTGlyphPen] Add a test using existing test data

Lib/fontTools/pens/ttGlyphPen_test.py

@@ -0,0 +1,38 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+
+import os
+import unittest
+
+from fontTools import ttLib
+from fontTools.pens.ttGlyphPen import TTGlyphPen
+
+
+class TTGlyphPenTest(unittest.TestCase):
+    def setUp(self):
+        #self.font = ttLib.TTFont(recalcBBoxes=False, recalcTimestamp=False)
+        self.font = ttLib.TTFont()
+        ttx_path = os.path.join(
+            os.path.abspath(os.path.dirname(os.path.realpath(__file__))),
+            '..', 'ttLib', 'testdata', 'TestTTF-Regular.ttx')
+        self.font.importXML(ttx_path, quiet=True)
+        self.pen = TTGlyphPen(self.font.getGlyphSet())
+
+    def test_drawGlyphsUnchanged(self):
+        glyphSet = self.font.getGlyphSet()
+        glyfTable = self.font['glyf']
+
+        for name in self.font.getGlyphOrder():
+            oldGlyph = glyphSet[name]
+            oldGlyph.draw(self.pen)
+            oldGlyph = oldGlyph._glyph
+            newGlyph = self.pen.glyph()
+            newGlyph.recalcBounds(glyfTable)
+            if hasattr(oldGlyph, 'program'):
+                newGlyph.program = oldGlyph.program
+            self.assertEqual(
+                oldGlyph.compile(glyfTable), newGlyph.compile(glyfTable))
+
+
+if __name__ == '__main__':
+    unittest.main()