def test_input_is_b(self):
     result = f('b')
     self.assertEqual('the input is b', result)
 def test_input_is_a(self):
     result = f('a')
     self.assertEqual('the input is a', result)
 def test_input_is_c(self):
     result = f('c')
     self.assertEqual('the input is c', result)
 def test_input_is_b(self):
     result = f('b')
     self.assertEqual('the input is b', result)
 def test_input_is_a(self):
     result = f('a')
     self.assertEqual('the input is a', result)
 def test_input_is_c(self):
     result = f('c')
     self.assertEqual('the input is c', result)