new_contents: # -*- coding: utf-8 -*-
  import pytest
  from click.testing import CliRunner
  
  
  def test_install():
      from pir.cli import cli
      runner = CliRunner()
      result = runner.invoke(cli, ['i'])
      assert "You must give at least one requirement to install" in result.output
  
  
  def test_uninstall():
      from pir.cli import cli
      runner = CliRunner()
      result = runner.invoke(cli, ['u'])
      assert "Do you want to continue?" in result.output
  
subject: Add test_cli.py