def test_empty_help_param(pytester: Pytester) -> None:
    """Test that an empty help param is displayed correctly."""
    pytester.makeconftest(
        """
        def pytest_addoption(parser):
            parser.addini("test_ini", "", default=True, type="bool")
    """
    )
    result = pytester.runpytest("--help")
    assert result.ret == 0
    lines = [
        "  required_plugins (args):",
        "                        Plugins that must be present for pytest to run*",
        "  test_ini (bool):*",
        "Environment variables:",
    ]
    result.stdout.fnmatch_lines(lines, consecutive=True)
Test that an empty help param is displayed correctly.
testing/test_helpconfig.py