import unittest

class Test_Threshold_Lower(unittest.TestCase) :
   def test(self) :
      import threshold_lower
      tl = threshold_lower.Threshold_Lower(5)

      self.assertTrue(tl.can_breach)

      self.assertTrue(tl.exceeds(3))
      self.assertFalse(tl.exceeds(7))

if __name__ == "__main__" :
   unittest.main()