use icu::properties::CodePointSetData;
use icu::properties::props::JoinControl;
let join_control = CodePointSetData::new::<JoinControl>();
assert!(join_control.contains('\u{200C}')); // ZERO WIDTH NON-JOINER
assert!(join_control.contains('\u{200D}')); // ZERO WIDTH JOINER
assert!(!join_control.contains('\u{200E}'));