def test_true_2(self): self.assertTrue(group_check('[[]()]'))
def test_false_4(self): self.assertFalse(group_check('({'))
def test_true_1(self): self.assertTrue(group_check('({})'))
def test_false_3(self): self.assertFalse(group_check('[])'))
def test_false_2(self): self.assertFalse(group_check('([]'))
def test_false_1(self): self.assertFalse(group_check('{(})'))
def test_true_4(self): self.assertTrue(group_check('()'))
def test_true_3(self): self.assertTrue(group_check('[{()}]'))