oh no

Raise code

assert result.exit_code == 0
    assert "FLASK_APP" in result.stderr
    assert "Usage:" in result.stdout


def test_help_echo_exception():
    def create_app():
        raise Exception("oh no")

    cli = FlaskGroup(create_app=create_app)
    runner = CliRunner(mix_stderr=False)
    result = runner.invoke(cli, ["--help"])
    assert result.exit_code == 0
    assert "Exception: oh no" in result.stderr
    assert "Usage:" in result.stdout