new_contents: import pytest
  
  
  def test_default_app():
      from repocribro.app import app
      import flask
      assert isinstance(app, flask.Flask)
  
  
  def test_main_manager(capsys):
      with pytest.raises(SystemExit):
          import repocribro.__main__
      out, err = capsys.readouterr()
      assert 'usage' in out
      assert 'arguments' in out
      assert 'config ' in out
      assert 'version ' in out
      assert 'help ' in out
  
  
  def test_manager(capsys):
      with pytest.raises(SystemExit):
          from repocribro.manage import run
          run()
      out, err = capsys.readouterr()
      assert 'usage' in out
      assert 'arguments' in out
      assert 'config ' in out
      assert 'version ' in out
      assert 'help ' in out
  
subject: Test interfaces for std manipulation with app