ciboulette 0.1.4

Library to parse JSON:API requests and build responses
Documentation 
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use super::*;

/// Extract the type of query param
///
/// i.e. `[public__peoples]` => `public__peoples`
pub fn parse_typed_query_param(s: &str) -> Option<Cow<'_, str>> {
    if s.len() <= 2 || !(s.starts_with('[') && s.ends_with(']')) {
        return None;
    }
    Some(Cow::Borrowed(&s[1..s.len() - 1]))
}

#[cfg(test)]
mod tests_param {
    use super::*;

    #[test]
    fn ok_simple() {
        let input = "[toto]";
        let res = parse_typed_query_param(&input);
        assert_eq!(
            res.is_some(),
            true,
            "should have parsed the sparse field param"
        );
        let res = res.unwrap();
        assert_eq!(res, "toto", "type mismatch");
    }

    #[test]
    fn no_match() {
        let input = "AAAAAAAAAA";
        let res = parse_typed_query_param(&input);
        assert_eq!(
            res.is_none(),
            true,
            "shouldn't have parsed the sparse field param"
        );
    }

    #[test]
    fn no_type() {
        let input = "[]";
        let res = parse_typed_query_param(&input);
        assert_eq!(
            res.is_none(),
            true,
            "shouldn't have parsed the sparse field param"
        );
    }

    #[test]
    fn nested_type_1() {
        let input = "[toto.tutu]";
        let res = parse_typed_query_param(&input);
        assert_eq!(
            res.is_some(),
            true,
            "should have parsed the sparse field param"
        );
        let res = res.unwrap();
        assert_eq!(res, "toto.tutu", "type mismatch");
    }

    #[test]
    fn nested_type_n() {
        let input = "[toto.tutu.toto.tata]";
        let res = parse_typed_query_param(&input);
        assert_eq!(
            res.is_some(),
            true,
            "should have parsed the sparse field param"
        );
        let res = res.unwrap();
        assert_eq!(res, "toto.tutu.toto.tata", "type mismatch");
    }
}