import unittest

class balanceTestCase(unittest.TestCase):

    def testSimple(self):
        self.assertEquals(balance("()"), True)

    def testOnion(self):
        self.assertEquals(balance("(((((())))))"), True)

    def testInverted(self):
        self.assertEquals(balance(")("), False)

    def testBroken(self):
        self.assertEquals(balance("())(()"), False)