use std::convert::TryFrom; use git_config::File; fn init_config() -> File<'static> {    File::try_from(        r#"[core]            a=b"100"        [core]            c=d            e=f"#,    )    .unwrap()} #[test]fn value_is_correct() {    let mut git_config = init_config();     let value = git_config.raw_value_mut("core", None, "a").unwrap();    assert_eq!(&*value.get().unwrap(), b"b100");} #[test]fn set_string_cleanly_updates() {    let mut git_config = init_config();     let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    value.set_string("hello world".to_string());    assert_eq!(        git_config.to_string(),        r#"[core]            a=hello world        [core]            c=d            e=f"#,    );     let mut value = git_config.raw_value_mut("core", None, "e").unwrap();    value.set_string(String::new());    assert_eq!(        git_config.to_string(),        r#"[core]            a=hello world        [core]            c=d            e="#,    );} #[test]fn delete_value() {    let mut git_config = init_config();     let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    value.delete();    assert_eq!(        git_config.to_string(),        "[core]\n            \n        [core]\n            c=d\n            e=f",    );     let mut value = git_config.raw_value_mut("core", None, "c").unwrap();    value.delete();    assert_eq!(        git_config.to_string(),        "[core]\n            \n        [core]\n            \n            e=f",    );} #[test]fn get_value_after_deleted() {    let mut git_config = init_config();     let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    value.delete();    assert!(value.get().is_err());} #[test]fn set_string_after_deleted() {    let mut git_config = init_config();     let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    value.delete();    value.set_string("hello world".to_string());    assert_eq!(        git_config.to_string(),        r#"[core]            a=hello world        [core]            c=d            e=f"#,    );} #[test]fn subsequent_delete_calls_are_noop() {    let mut git_config = init_config();     let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    for _ in 0..10 {        value.delete();    }    assert_eq!(        git_config.to_string(),        "[core]\n            \n        [core]\n            c=d\n            e=f"    );} #[test]fn partial_values_are_supported() {    let mut git_config = File::try_from(        r#"[core]            a=b"100"\b        [core]            c=d            e=f"#,    )    .unwrap();    let mut value = git_config.raw_value_mut("core", None, "a").unwrap();    assert_eq!(&*value.get().unwrap(), b"b100b");    value.delete();    assert_eq!(        git_config.to_string(),        "[core]\n            \n        [core]\n            c=d\n            e=f"    );}