tags.rs - mozsearch

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#[cfg(feature = "tags")]

mod tagtests {

    use serde_cbor::value::Value;

    use serde_cbor::{from_slice, to_vec};

    fn decode_hex(s: &str) -> std::result::Result<Vec<u8>, std::num::ParseIntError> {

        (0..s.len())

            .step_by(2)

            .map(|i| u8::from_str_radix(&s[i..i + 2], 16))

            .collect()

    // get bytes from http://cbor.me/ trees

    fn parse_cbor_me(example: &str) -> std::result::Result<Vec<u8>, std::num::ParseIntError> {

        let hex = example

            .split("\n")

            .flat_map(|line| line.split("#").take(1))

            .collect::<Vec<&str>>()

            .join("")

            .replace(" ", "");

        decode_hex(&hex)

    #[test]

    fn tagged_cbor_roundtrip() {

        let data = r#"

C1                   # tag(1)

   82                # array(2)

      C2             # tag(2)

         63          # text(3)

            666F6F   # "foo"

      C3             # tag(3)

         A1          # map(1)

            C4       # tag(4)

               61    # text(1)

                  61 # "a"

            C5       # tag(5)

               61    # text(1)

                  62 # "b"

"#;

        let bytes1 = parse_cbor_me(&data).unwrap();

        let value1: Value = from_slice(&bytes1).unwrap();

        let bytes2 = to_vec(&value1).unwrap();

        let value2: Value = from_slice(&bytes2).unwrap();

        assert_eq!(bytes1, bytes2);

        assert_eq!(value1, value2);