Function test_hex_int64

datafusion/spark/src/function/math/hex.rs:459–482

()

    #[test]
    fn test_hex_int64() {
        let test_cases = vec![
            (0_i64, "0"),
            (1, "1"),
            (15, "F"),
            (16, "10"),
            (255, "FF"),
            (256, "100"),
            (1234, "4D2"),
            (i64::MAX, "7FFFFFFFFFFFFFFF"),
            (i64::MIN, "8000000000000000"),
            (-1, "FFFFFFFFFFFFFFFF"),
        ];

        for (num, expected) in test_cases {
            let mut cache = [0u8; 16];
            let slice = super::hex_int64(num, &mut cache);

            unsafe {
                let result = from_utf8_unchecked(slice);
                assert_eq!(expected, result, "hex_int64({num}) mismatch");
            }
        }
    }

    #[test]
    fn test_hex_lookup_table_covers_all_bytes() {