use std::borrow::Cow; use ::bstr::{BStr, BString}; use gix_utils::{AsBStr, AsBStrOpt}; #[test]fn common_string_and_byte_containers_are_supported() {    let bstring = BString::from("value");    let string = String::from("value");    let vec = Vec::from(b"value");    let array = *b"value";    let cow = Cow::<BStr>::Borrowed(BStr::new("value"));     for actual in [        bstring.as_bstr(),        string.as_bstr(),        vec.as_bstr(),        array.as_bstr(),        cow.as_bstr(),        "value".as_bstr(),    ] {        assert_eq!(actual, "value", "all supported containers provide the same view");    }} #[test]fn optional_and_present_values_are_supported_without_allocation() {    let value = BStr::new("value");    assert_eq!(value.as_bstr_opt(), Some(value));    assert_eq!(Some(value).as_bstr_opt(), Some(value));    assert_eq!(Option::<&BStr>::None.as_bstr_opt(), None);}