#![allow(unused)]

use std::fmt::Display;

pub struct Thermometer {
    temperature: f32,
}

impl Thermometer {
    pub fn new(temperature: f32) -> Self {
        Self { temperature }
    }

    pub fn get_temperature(&self) -> f32 {
        self.temperature
    }

    pub fn display(&self) -> impl Display {
        format!("Thermometer[ {:02.1} ]", self.get_temperature())
    }
}

impl super::Device for Thermometer {
    fn print_status(&self) {
        println!("{}", self.display())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn smoke_test() {
        let thermometer = Thermometer::new(20.0);
        assert_eq!(thermometer.temperature, 20.0);
        assert_eq!(thermometer.get_temperature(), 20.0);
    }

    #[test]
    fn display_test() {
        assert_eq!(format!("{}", Thermometer::new(19.550).display()), "Thermometer[ 19.5 ]");
        assert_eq!(format!("{}", Thermometer::new(19.551).display()), "Thermometer[ 19.6 ]");
    }
}