    assert_eq!(deunicode("മലയാലമ്"), "mlyaalm");
    assert_eq!(deunicode("げんまい茶"), "genmaiCha");
    assert_eq!(deunicode("🦄☣"), "unicorn biohazard");
    assert_eq!(deunicode("🦄 ☣"), "unicorn biohazard");
    assert_eq!(deunicode(" spaces "), " spaces ");
    assert_eq!(deunicode("  two  spaces  "), "  two  spaces  ");
    assert_eq!(deunicode(&[std::char::from_u32(849).unwrap()].iter().collect::<String>()), "[?]");
    assert_eq!(deunicode_with_tofu(&[std::char::from_u32(849).unwrap()].iter().collect::<String>(), "tofu"), "tofu");
}