def test_should_detect_redundant_braces(self):
		a = "((a+b))"
		self.assertTrue(has_redundant_braces(a))
	def test_should_not_detect_redundant_braces(self):
		a = "(a+(b+c))"
		self.assertFalse(has_redundant_braces(a))
	def test_should_detect_inner_redundant_braces(self):
		a = "(a+((b+c)))"
		self.assertTrue(has_redundant_braces(a))