old_contents: import api
  import unittest
  import os
  from getpass import getpass
  
  class ApiTest(unittest.TestCase):
  
      def setUp(self):
          self.linode = api.Api(os.environ['LINODE_API_KEY'])
  
      def testAvailLinodeplans(self):
          available_plans = self.linode.avail_linodeplans()
          self.assertTrue(isinstance(available_plans, list))
  
  if __name__ == "__main__":
      if 'LINODE_API_KEY' not in os.environ:
          os.environ['LINODE_API_KEY'] = getpass('Enter API Key: ')
      unittest.main()
  
new_contents: import api
  import unittest
  import os
  from getpass import getpass
  
  class ApiTest(unittest.TestCase):
  
      def setUp(self):
          self.linode = api.Api(os.environ['LINODE_API_KEY'])
  
      def testAvailLinodeplans(self):
          available_plans = self.linode.avail_linodeplans()
          self.assertTrue(isinstance(available_plans, list))
  
      def testEcho(self):
          test_parameters = {'FOO': 'bar', 'FIZZ': 'buzz'}
          response = self.linode.test_echo(**test_parameters)
          self.assertTrue('FOO' in response)
          self.assertTrue('FIZZ' in response)
          self.assertEqual(test_parameters['FOO'], response['FOO'])
          self.assertEqual(test_parameters['FIZZ'], response['FIZZ'])
  
  if __name__ == "__main__":
      if 'LINODE_API_KEY' not in os.environ:
          os.environ['LINODE_API_KEY'] = getpass('Enter API Key: ')
      unittest.main()
  
subject: Add a test case for test.echo