use dim::si;

pub type Watt = si::Watt<f32>;

/*
 * TODO: these should be si::Meter<f32>
 */
#[derive(Debug, Copy, Clone)]
pub struct BeamPosition {
    pub x: f32,
    pub y: f32
}

impl BeamPosition {
    pub fn new(x: f32, y: f32) -> BeamPosition {
        BeamPosition {x: x, y: y}
    }
}

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

    #[test]
    fn create_watt() {
        let w = Watt::new(1.0);
    }

    #[test]
    fn compare_watt() {
        let w1 = Watt::new(1.0);
        let w2 = Watt::new(2.0);

        assert!(w2 > w1)
    }

    #[test]
    fn equal_watt() {
        let w1 = Watt::new(1.0);
        let w2 = Watt::new(1.0);

        assert!(w1 == w2)
    }

    #[test]
    fn add_watt() {
        let w1 = Watt::new(1.0);
        let w2 = Watt::new(2.0);

        assert_eq!(w1 + w2, Watt::new(3.0));
    }
}