# This code was developed during our class as a (partial) example demonstrating use of
# Python's unittest module for testing our previous Television class.  To facilitate testing,
# we modified the earlier Television class to provide accessors isOn(), isMuted(), getVolume() and getChannel()
#
# Note well that this file only represents a small portion of the testing that should be done to ensure
# the rich set of functionality that the Television supports

from Television import Television
import unittest

class TelevisionTest(unittest.TestCase):

      def testInitialization(self):
            tv = Television()
            self.assertEquals(tv.getChannel(), 2)
            self.assertEquals(tv.getVolume(), 5)
            self.assertFalse(tv.isOn())
            self.assertFalse(tv.isMuted())
            
      def testChannelUp(self):
            tv = Television()
            tv.togglePower()
            c = tv.getChannel()
            tv.channelUp()
            self.assertEquals(c+1, tv.getChannel())

      def testNoPower(self):
            tv = Television()
            c = tv.getChannel()
            tv.channelUp()
            self.assertEquals(c, tv.getChannel())
            tv.toggleMute()
            self.assertFalse(tv.isMuted())
            # ... could test other functions in similar fashion

      def testAutoUnmute(self):
            tv = Television()
            tv.togglePower()
            tv.toggleMute()
            self.assertTrue(tv.isMuted())
            tv.volumeUp()
            self.assertFalse(tv.isMuted())


      def testUnmuteOnPower(self):
            tv = Television()
            tv.togglePower()
            tv.toggleMute()
            self.assertTrue(tv.isMuted())
            tv.togglePower()
            tv.togglePower()
            self.assertFalse(tv.isMuted())

      # many more functions should follow for complete testing...


if __name__ == '__main__':
    unittest.main()           # this starts the testing process