old_contents: from pip.exceptions import CommandError
  from pip.baseparser import create_main_parser
  from pip.commands.help import (HelpCommand,
                                 SUCCESS,
                                 ERROR,)
  from mock import Mock
  from nose.tools import assert_raises
  from tests.test_pip import run_pip, reset_env
  
  
  def test_run_method_should_return_sucess_when_finds_command_name():
      """
      Test HelpCommand.run for existing command
      """
      options_mock = Mock()
      args = ('freeze',)
      help_cmd = HelpCommand(create_main_parser())
      status = help_cmd.run(options_mock, args)
      assert status == SUCCESS
  
  
  def test_run_method_should_return_sucess_when_command_name_not_specified():
      """
      Test HelpCommand.run when there are no args
      """
      options_mock = Mock()
      args = ()
      help_cmd = HelpCommand(create_main_parser())
      status = help_cmd.run(options_mock, args)
      assert status == SUCCESS
  
  
  def test_run_method_should_raise_command_error_when_command_does_not_exist():
      """
      Test HelpCommand.run for non-existing command
      """
      options_mock = Mock()
      args = ('mycommand',)
      help_cmd = HelpCommand(create_main_parser())
      assert_raises(CommandError, help_cmd.run, options_mock, args)
  
  
  def test_help_command_should_exit_status_ok_when_command_exists():
      """
      Test `help` command for existing command
      """
      reset_env()
      result = run_pip('help', 'freeze')
      assert result.returncode == SUCCESS
  
  
  def test_help_command_should_exit_status_ok_when_no_command_is_specified():
      """
      Test `help` command for no command
      """
      reset_env()
      result = run_pip('help')
      assert result.returncode == SUCCESS
  
  
  def test_help_command_should_exit_status_error_when_command_does_not_exist():
      """
      Test `help` command for non-existing command
      """
      reset_env()
      result = run_pip('help', 'mycommand', expect_error=True)
      assert result.returncode == ERROR
  
  def test_help_commands_equally_functional():
      """
      Test for `pip help`, `pip` and `pip --help` being the same
      """
      reset_env()
  
      results = list(map(run_pip, ('help', '--help')))
      results.append(run_pip())
  
      out = map(lambda x: x.stdout, results)
      ret = map(lambda x: x.returncode, results)
  
      assert len(set(out)) == 1
      assert sum(ret) == 0
  
new_contents: from pip.exceptions import CommandError
  from pip.baseparser import create_main_parser
  from pip.commands.help import (HelpCommand,
                                 SUCCESS,
                                 ERROR,)
  from pip.commands import commands
  from mock import Mock
  from nose.tools import assert_raises
  from tests.test_pip import run_pip, reset_env
  
  
  def test_run_method_should_return_sucess_when_finds_command_name():
      """
      Test HelpCommand.run for existing command
      """
      options_mock = Mock()
      args = ('freeze',)
      help_cmd = HelpCommand(create_main_parser())
      status = help_cmd.run(options_mock, args)
      assert status == SUCCESS
  
  
  def test_run_method_should_return_sucess_when_command_name_not_specified():
      """
      Test HelpCommand.run when there are no args
      """
      options_mock = Mock()
      args = ()
      help_cmd = HelpCommand(create_main_parser())
      status = help_cmd.run(options_mock, args)
      assert status == SUCCESS
  
  
  def test_run_method_should_raise_command_error_when_command_does_not_exist():
      """
      Test HelpCommand.run for non-existing command
      """
      options_mock = Mock()
      args = ('mycommand',)
      help_cmd = HelpCommand(create_main_parser())
      assert_raises(CommandError, help_cmd.run, options_mock, args)
  
  
  def test_help_command_should_exit_status_ok_when_command_exists():
      """
      Test `help` command for existing command
      """
      reset_env()
      result = run_pip('help', 'freeze')
      assert result.returncode == SUCCESS
  
  
  def test_help_command_should_exit_status_ok_when_no_command_is_specified():
      """
      Test `help` command for no command
      """
      reset_env()
      result = run_pip('help')
      assert result.returncode == SUCCESS
  
  
  def test_help_command_should_exit_status_error_when_command_does_not_exist():
      """
      Test `help` command for non-existing command
      """
      reset_env()
      result = run_pip('help', 'mycommand', expect_error=True)
      assert result.returncode == ERROR
  
  def test_help_commands_equally_functional():
      """
      Test if `pip help` and 'pip --help' behave the same way.
      """
      reset_env()
  
      results = list(map(run_pip, ('help', '--help')))
      results.append(run_pip())
  
      out = map(lambda x: x.stdout, results)
      ret = map(lambda x: x.returncode, results)
  
      msg = '"pip --help" != "pip help" != "pip"'
      assert len(set(out)) == 1, 'output of: ' + msg
      assert sum(ret) == 0, 'exit codes of: ' + msg
  
      for name, cls in commands.items():
          if cls.hidden: continue
          assert run_pip('help', name).stdout == \
                 run_pip(name, '--help').stdout
  
          
  
subject: test if 'pip help <cmd>' == 'pip <cmd> --help'