def test_quit(self):
     self.assertFalse(validate_numbers('quit'))
 def test_string_1(self):
     self.assertTrue(validate_numbers('3,6,2,7,4'))
 def test_empty(self):
     self.assertFalse(validate_numbers(''))
 def test_string_1(self):
     self.assertTrue(validate_numbers('3,6,2,7,4'))
 def test_empty(self):
     self.assertFalse(validate_numbers(''))
 def test_quit(self):
     self.assertFalse(validate_numbers('quit'))