#[cfg(test)]
mod acquire {
    use git_lock::acquire::Fail;
    use std::time::{Duration, Instant};

    #[test]
    fn fail_mode_immediately_produces_a_descriptive_error() -> crate::Result {
        let dir = tempfile::tempdir()?;
        let resource = dir.path().join("the-resource");
        let guard = git_lock::Marker::acquire_to_hold_resource(&resource, Fail::Immediately, None)?;
        assert!(guard.lock_path().ends_with("the-resource.lock"));
        assert!(guard.resource_path().ends_with("the-resource"));
        let err_str = git_lock::Marker::acquire_to_hold_resource(resource, Fail::Immediately, None)
            .expect_err("the lock is taken and there is a failure obtaining it again")
            .to_string();

        assert!(err_str.contains("the-resource could not be obtained immediately"));
        assert!(err_str.contains("the-resource.lock"), "it mentions the lockfile itself");
        Ok(())
    }

    #[test]
    fn fail_mode_after_duration_fails_after_a_given_duration_or_more() -> crate::Result {
        let dir = tempfile::tempdir()?;
        let resource = dir.path().join("the-resource");
        let _guard = git_lock::Marker::acquire_to_hold_resource(&resource, Fail::Immediately, None)?;
        let start = Instant::now();
        let time_to_wait = Duration::from_millis(50);
        let err_str =
            git_lock::Marker::acquire_to_hold_resource(resource, Fail::AfterDurationWithBackoff(time_to_wait), None)
                .expect_err("the lock is taken and there is a failure obtaining it again after some delay")
                .to_string();
        assert!(
            start.elapsed() >= time_to_wait,
            "it should never wait less than the given wait time"
        );
        assert!(
            err_str.contains("could not be obtained after 0.05s"),
            "it lets us know that we were waiting for some time"
        );
        assert!(err_str.contains("the-resource.lock"), "it mentions the lockfile itself");
        Ok(())
    }
}
mod commit {
    use git_lock::acquire::Fail;

    #[test]
    fn failure_to_commit_does_return_a_registered_marker() {
        let dir = tempfile::tempdir().unwrap();
        let resource = dir.path().join("the-resource");
        let file = git_lock::File::acquire_to_update_resource(&resource, Fail::Immediately, None).unwrap();
        let mark = file.close().unwrap();
        let resource_lock_path = mark.lock_path().to_owned();

        std::fs::create_dir(&resource).unwrap();
        let err = mark.commit().expect_err("it fails as the resource path is a directory");
        assert!(
            resource_lock_path.is_file(),
            "the underlying lock wasn't consumed after all"
        );
        drop(err);
        assert!(
            !resource_lock_path.is_file(),
            "and is linked to the err which makes the lock recoverable"
        );
    }

    #[test]
    fn fails_for_ordinary_marker_that_was_never_writable() -> crate::Result {
        let dir = tempfile::tempdir()?;
        let resource = dir.path().join("the-resource");
        let mark = git_lock::Marker::acquire_to_hold_resource(&resource, Fail::Immediately, None)?;
        let err = mark.commit().expect_err("should always fail");
        assert_eq!(err.error.kind(), std::io::ErrorKind::Other);
        assert_eq!(
            err.error.get_ref().expect("custom error").to_string(),
            "refusing to commit marker that was never opened"
        );
        Ok(())
    }
}