new_contents: # coding: utf-8
  # Test Cases for other commands
  
  import unittest
  import sys
  sys.path.append('..')
  
  import ledis
  from ledis._compat import b
  from ledis import ResponseError
  
  l = ledis.Ledis(port=6380)
  
  class TestOtherCommands(unittest.TestCase):
      def setUp(self):
          pass
  
      def tearDown(self):
          pass
  
      # server information
      def test_echo(self):
          assert l.echo('foo bar') == b('foo bar')
  
      def test_ping(self):
          assert l.ping()
  
      def test_select(self):
          assert l.select('1')
          assert l.select('15')
          self.assertRaises(ResponseError, lambda: l.select('16'))
subject: add server information commands test cases