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use std::fmt::{Display, Formatter};

use crate::Actual;

impl<T> Actual<T> {
    pub fn new(value: T, description_func: fn(&T) -> String) -> Actual<T> {
        Actual {
            value,
            description_func,
        }
    }
}

impl<T> Actual<T>
where
    T: Display,
{
    pub fn create_for(value: T) -> Actual<T> {
        Actual {
            value,
            description_func: |v| v.to_string(),
        }
    }
}

impl<T> Display for Actual<T> {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", (self.description_func)(&self.value))
    }
}

impl<T> PartialEq for Actual<T>
where
    T: PartialEq,
{
    fn eq(&self, other: &Self) -> bool {
        self.value.eq(&other.value)
    }

    fn ne(&self, other: &Self) -> bool {
        self.value.ne(&other.value)
    }
}