Accepting &str and String

#[cfg(test)]
mod tests {

    struct Inmate {
        name: String,
        infraction: String,
        incarceration_years: u16
    }

    impl Inmate {

        fn new<IntoString: Into<String>>(
            name: IntoString,
            infraction: IntoString,
            incarceration_years: u16,
        ) -> Self {
            Self {
                name: name.into(),
                infraction: infraction.into(),
                incarceration_years,
            }
        }
    }

    #[test]
    fn incarcerates() {

        let inmates = vec![
            Inmate::new("LonghornAR", "maga", 20),
            Inmate::new("wswartzendruber", "maga", 20),
        ];

        assert_eq!(2, inmates.len());
    }
}