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smol_str 0.1.3

small-string optimized stirng type with O(1) clone
Documentation 
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extern crate smol_str;
#[macro_use]
extern crate proptest;

use smol_str::SmolStr;

#[test]
#[cfg(target_pointer_width = "64")]
fn smol_str_is_smol() {
    assert_eq!(
        ::std::mem::size_of::<SmolStr>(),
        ::std::mem::size_of::<String>(),
    );
}

#[test]
fn assert_traits() {
    fn f<T: Send + Sync + ::std::fmt::Debug + Clone>() {}
    f::<SmolStr>();
}

proptest! {
    #[test]
    fn roundtrip(s: String) {
        let smol = SmolStr::new(s.as_str());
        prop_assert_eq!(smol.as_str(), s.as_str());
    }

    #[test]
    fn roundtrip_spaces(s in r"( )*") {
        let smol = SmolStr::new(s.as_str());
        prop_assert_eq!(smol.as_str(), s.as_str());
    }

    #[test]
    fn roundtrip_newlines(s in r"\n*") {
        let smol = SmolStr::new(s.as_str());
        prop_assert_eq!(smol.as_str(), s.as_str());
    }

    #[test]
    fn roundtrip_ws(s in r"( |\n)*") {
        let smol = SmolStr::new(s.as_str());
        prop_assert_eq!(smol.as_str(), s.as_str());
    }
}