{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"for"}]}
        for (test, expected) in TESTERS.iter().zip(OUTCOMES) {
        const OUTCOMES: [&str; 9] = ["⁰", "¹", "²", "³", "⁴", "⁶³", "⁶⁴", "⁶⁵", "¹²⁷"];
            let actual = pwr2_to_exponent(*test);