Function fuzz_truncated_valid_payloads

nodedb-query/src/msgpack_scan/reader.rs:811–836

()

    /// All reader functions must return `None` — never panic.
    #[test]
    fn fuzz_truncated_valid_payloads() {
        let docs = [
            json!({"key": "value", "num": 42, "flag": true}),
            json!({"nested": {"a": 1, "b": [1, 2, 3]}}),
            json!([1, "two", 3.0, null, false]),
            json!({"large": 9999999999_i64}),
            json!({"float": 1.23456789}),
        ];

        for doc in &docs {
            let full = encode(doc);
            // Truncate at every position from 0 to full.len()-1
            for truncate_at in 0..full.len() {
                let slice = &full[..truncate_at];
                // None of these may panic; result doesn't matter
                let _ = skip_value(slice, 0);
                let _ = read_f64(slice, 0);
                let _ = read_i64(slice, 0);
                let _ = read_str(slice, 0);
                let _ = read_bool(slice, 0);
                let _ = map_header(slice, 0);
                let _ = array_header(slice, 0);
                let _ = read_value(slice, 0);
            }
        }
    }

    /// The never-used 0xc1 tag must return `None` for all functions.
    #[test]