mod get {    use crate::file::{cow_str, mutable::multi_value::init_config};     #[test]    fn single_lines() -> crate::Result {        let mut config = init_config();         let value = config.raw_values_mut("core", None, "a")?;        assert_eq!(&*value.get()?, vec![cow_str("b100"), cow_str("d"), cow_str("f"),]);        Ok(())    }     #[test]    fn multi_line() -> crate::Result {        let mut config: git_config::File = r#"[core]            a=b\"100"        [core]            a=d\"b  "\c            a=f\   a"#        .parse()?;         let mut values = config.raw_values_mut("core", None, "a")?;        assert_eq!(            &*values.get()?,            vec![cow_str("b100"), cow_str("db  c"), cow_str("f   a"),]        );         values.delete_all();        assert!(values.get().is_err());         Ok(())    }} mod access {    use crate::file::mutable::multi_value::init_config;     #[test]    fn non_empty_sizes() -> crate::Result {        let mut config = init_config();        assert_eq!(config.raw_values_mut("core", None, "a")?.len(), 3);        assert!(!config.raw_values_mut("core", None, "a")?.is_empty());        Ok(())    }} mod set {    use crate::file::{cow_str, mutable::multi_value::init_config};     #[test]    fn values_are_escaped() -> crate::Result {        for value in ["a b", " a b", "a b\t", ";c", "#c", "a\nb\n\tc"] {            let mut config = init_config();            let mut values = config.raw_values_mut("core", None, "a")?;            values.set_all(value);             let config_str = config.to_string();            let config: git_config::File = config_str.parse()?;            assert_eq!(                config.raw_values("core", None, "a")?,                vec![cow_str(value), cow_str(value), cow_str(value)],                "{config_str:?}"            );        }        Ok(())    }     #[test]    fn single_at_start() -> crate::Result {        let mut config = init_config();        let mut values = config.raw_values_mut("core", None, "a")?;        values.set_string_at(0, "Hello");        assert_eq!(            config.to_string(),            "[core]\n    a = Hello\n    [core]\n        a =d\n        a= f\n"        );        Ok(())    }     #[test]    fn single_at_end() -> crate::Result {        let mut config = init_config();        let mut values = config.raw_values_mut("core", None, "a")?;        values.set_string_at(2, "Hello");        assert_eq!(            config.to_string(),            "[core]\n    a = b\"100\"\n    [core]\n        a =d\n        a= Hello\n"        );        Ok(())    }     #[test]    fn all() -> crate::Result {        let mut config = init_config();        let mut values = config.raw_values_mut("core", None, "a")?;        values.set_all("Hello");        assert_eq!(            config.to_string(),            "[core]\n    a = Hello\n    [core]\n        a= Hello\n        a =Hello\n"        );        Ok(())    }     #[test]    fn all_empty() -> crate::Result {        let mut config = init_config();        let mut values = config.raw_values_mut("core", None, "a")?;        values.set_all("");        assert_eq!(            config.to_string(),            "[core]\n    a = \n    [core]\n        a= \n        a =\n"        );        Ok(())    }} mod delete {    use crate::file::mutable::multi_value::init_config;     #[test]    fn single_at_start_and_end() -> crate::Result {        let mut config = init_config();        {            let mut values = config.raw_values_mut("core", None, "a")?;            values.delete(0);            assert_eq!(                config.to_string(),                "[core]\n    \n    [core]\n        a =d\n        a= f\n",            );        }         let mut values = config.raw_values_mut("core", None, "a")?;        values.delete(1);        assert_eq!(config.to_string(), "[core]\n    \n    [core]\n        a =d\n        ");        Ok(())    }     #[test]    fn all() -> crate::Result {        let mut config = init_config();        let mut values = config.raw_values_mut("core", None, "a")?;        values.delete_all();        values.delete_all();        assert!(values.get().is_err());        assert_eq!(config.to_string(), "[core]\n    \n    [core]\n        \n        ");        Ok(())    }} fn init_config() -> git_config::File<'static> {    r#"[core]    a = b"100"    [core]        a =d        a= f"#        .parse()        .unwrap()}