def env_str_multi() -> tuple[str, ...]:
    """Specify environment variables within multiple strings for testing."""
    return tuple(
        (
            f"AWS_ACCESS_KEY_ID_EXAMPLE=AKIAIOSMULTI{i}EXAMPLE\n"
            f"AWS_SECRET_ACCESS_KEY_EXAMPLE=wJalrXUtnFEMI/K7MDENG/bPMULTI{i}EXAMPLE\n"
            f"CSV_VARIABLE=multi,{i},example\n"
            f"MULTI_{i}_VARIABLE=multi_{i}_value"
        )
        for i in range(3)
    )