def testNegOneSq(self): self.assertEqual(hw.sq(-1), 1)
def testZeroSq(self): self.assertEqual(hw.sq(0), 0)
def testOneSq(self): self.assertEqual(hw.sq(1), 1)
def testFourSq(self): self.assertEqual(hw.sq(4), 16)
def testNegfourSq(self): self.assertEqual(hw.sq(-4), 16)