def METHOD_NAME(self):
    self.assertNotIn('thm', Versioner.git_file('.coverage', 'bc75e4a07af609e3cfbc5c789aa69a8b3fc2c099'))
    self.assertIn('thm', Versioner.git_file('.coverage', '3ce960385af649e3a0737ed445410bcb998b2267'))
    self.assertEqual(None, Versioner.git_file('foo', 'HEAD', allow_missing=True))
    with self.assertRaises(Exception) as e:
        Versioner.git_file('foo', 'HEAD')
    self.assertIn('Failed to load', str(e.exception))