browserslist-rs 0.20.0

Rust-ported Browserslist.
Documentation 
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use super::{Distrib, QueryResult};
use crate::{error::Error, opts::Opts, parser::Comparator, semver::Version};
use browserslist_data::caniuse::{get_browser_stat, get_browser_version_alias};

pub(super) fn browser_unbounded_range(
    name: &str,
    comparator: Comparator,
    version: &str,
    opts: &Opts,
) -> QueryResult {
    let (name, stat) = get_browser_stat(name, opts.mobile_to_desktop)
        .ok_or_else(|| Error::BrowserNotFound(name.to_string()))?;
    let version: Version = get_browser_version_alias(name, version)
        .unwrap_or(version)
        .parse()
        .unwrap_or_default();

    let distribs = stat
        .iter()
        .filter(|version| version.released)
        .map(|version| version.version())
        .filter(|v| {
            let v: Version = v.parse().unwrap_or_default();
            match comparator {
                Comparator::Greater => v > version,
                Comparator::Less => v < version,
                Comparator::GreaterOrEqual => v >= version,
                Comparator::LessOrEqual => v <= version,
            }
        })
        .map(|version| Distrib::new(name, version))
        .collect();
    Ok(distribs)
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::test::{run_compare, should_failed};
    use test_case::test_case;

    #[test_case("ie > 9"; "greater")]
    #[test_case("ie >= 10"; "greater or equal")]
    #[test_case("ie < 10"; "less")]
    #[test_case("ie <= 9"; "less or equal")]
    #[test_case("Explorer > 10"; "case insensitive")]
    #[test_case("android >= 4.2"; "android 1")]
    #[test_case("android >= 4.3"; "android 2")]
    #[test_case("ie<=9"; "no spaces")]
    #[test_case("and_qq > 0"; "browser with one version")]
    fn default_options(query: &str) {
        run_compare(query, &Opts::default(), None);
    }

    #[test_case("chromeandroid >= 52 and chromeandroid < 54"; "chrome")]
    fn mobile_to_desktop(query: &str) {
        run_compare(
            query,
            &Opts {
                mobile_to_desktop: true,
                ..Default::default()
            },
            None,
        );
    }

    #[test_case(
        "unknow > 10", Error::BrowserNotFound(String::from("unknow"));
        "unknown browser"
    )]
    fn invalid(query: &str, error: Error) {
        assert_eq!(should_failed(query, &Opts::default()), error);
    }
}