def test_debt_equity_ratio_fail(self):
     with self.client:
         stock = Stock('NASDAQ', 'TSLAA')
         self.assertFalse(stock._compute_debt_equity_ratio())
 def test_debt_equity_ratio_success(self):
     with self.client:
         stock = Stock('NASDAQ', 'TSLA')
         self.assertTrue(stock._compute_debt_equity_ratio())