def test_bar(self): ev = EconVisualizer(self.income, self.countries) ev._box(self.merged_df, visualize=False) ev = EconVisualizer() ev._box(self.merged_df, visualize=False) with self.assertRaises(TypeError): ev._box(10, visualize=False) with self.assertRaises(KeyError): ev._box(df=self.countries, visualize=False)