def test_stem_copied(self):
     self.assertEqual(model.stem('copied'), 'copy')
 def test_stem_copying(self):
     self.assertEqual(model.stem('copying'), 'copy')
 def test_stem_played(self):
     self.assertEqual(model.stem('played'), 'play')
 def test_stem_passed(self):
     self.assertEqual(model.stem('passed'), 'pass')
 def test_stem_talked(self):
     self.assertEqual(model.stem('talked'), 'talk')