mod save_to {    use git_repository as git;     use crate::{remote, remote::save::uniformize};     #[test]    fn named_remotes_save_as_is() -> crate::Result {        let repo = remote::repo("clone");        let remote = repo.find_remote("origin")?;         let mut config = git::config::File::default();        remote.save_to(&mut config)?;        let actual = uniformize(config.to_string());        assert!(            actual.starts_with("[remote \"origin\"]\n\turl = "),            "workaround absolute paths in test fixture…"        );        assert!(            actual.ends_with("/base\n\tfetch = +refs/heads/*:refs/remotes/origin/*\n"),            "…by checking only the parts that are similar"        );         let previous_remote_state = repo            .config_snapshot()            .plumbing()            .section_by_key("remote.origin")            .expect("present")            .to_bstring();        let mut config = repo.config_snapshot().plumbing().clone();        remote.save_to(&mut config)?;        assert_eq!(            config.sections_by_name("remote").expect("more than one").count(),            2,            "amount of remotes are unaltered"        );        assert_eq!(            config.section_by_key("remote.origin").expect("present").to_bstring(),            previous_remote_state,            "the serialization doesn't modify anything"        );        Ok(())    }} mod save_as_to {    use std::convert::TryInto;     use git_repository as git;     use crate::{basic_repo, remote::save::uniformize};     #[test]    fn anonymous_remotes_cannot_be_saved_lacking_a_name() -> crate::Result {        let repo = basic_repo()?;        let remote = repo.remote_at("https://example.com/path")?;        assert!(matches!(            remote.save_to(&mut git::config::File::default()).unwrap_err(),            git::remote::save::Error::NameMissing { .. }        ));        Ok(())    }     #[test]    fn new_anonymous_remote_with_name() -> crate::Result {        let repo = basic_repo()?;        let mut remote = repo            .remote_at("https://example.com/path")?            .push_url("https://ein.hub/path")?            .with_fetch_tags(git::remote::fetch::Tags::All)            .with_refspecs(                [                    "+refs/heads/*:refs/remotes/any/*",                    "refs/heads/special:refs/heads/special-upstream",                ],                git::remote::Direction::Fetch,            )?            .with_refspecs(                [                    "refs/heads/main:refs/heads/main", // similar to 'simple' for `push.default`                    ":",                               // similar to 'matching'                ],                git::remote::Direction::Push,            )?;        let remote_name = "origin";        assert!(            repo.find_remote(remote_name).is_err(),            "there is no remote of that name"        );        assert_eq!(remote.name(), None);        let mut config = git::config::File::default();        remote.save_as_to(remote_name, &mut config)?;        let expected = "[remote \"origin\"]\n\turl = https://example.com/path\n\tpushurl = https://ein.hub/path\n\ttagOpt = --tags\n\tfetch = +refs/heads/*:refs/remotes/any/*\n\tfetch = refs/heads/special:refs/heads/special-upstream\n\tpush = refs/heads/main:refs/heads/main\n\tpush = :\n";        assert_eq!(uniformize(config.to_string()), expected);         remote.save_as_to(remote_name, &mut config)?;        assert_eq!(            uniformize(config.to_string()),            expected,            "it appears to be idempotent in this case"        );         {            let mut new_section = config.section_mut_or_create_new("unrelated", None).expect("works");            new_section.push("a".try_into().unwrap(), Some("value".into()));             config                .section_mut_or_create_new("initially-empty-not-removed", Some("name".into()))                .expect("works");             let mut existing_section = config                .section_mut_or_create_new("remote", Some("origin".into()))                .expect("works");            existing_section.push("free".try_into().unwrap(), Some("should not be removed".into()))        }        remote.save_as_to(remote_name, &mut config)?;        assert_eq!(            uniformize(config.to_string()),            "[remote \"origin\"]\n\tfree = should not be removed\n\turl = https://example.com/path\n\tpushurl = https://ein.hub/path\n\ttagOpt = --tags\n\tfetch = +refs/heads/*:refs/remotes/any/*\n\tfetch = refs/heads/special:refs/heads/special-upstream\n\tpush = refs/heads/main:refs/heads/main\n\tpush = :\n[unrelated]\n\ta = value\n[initially-empty-not-removed \"name\"]\n",            "unrelated keys are kept, and so are keys in the sections we edit"        );        Ok(())    }} fn uniformize(input: String) -> String {    input.replace("\r\n", "\n")}