calc_vic 0.1.0

Simple lib for learn proposal
Documentation 
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pub mod calc_with_1 {
    /// # Essa funcao faz uma soma e adiciona 1 
    /// 
    /// # exemplo
    /// 
    /// ```rust
    ///     use calc_vic;
    /// 
    ///     assert_eq!(42, calc_vic::calc_with_1::sum_plus_one(41, 0));
    ///     assert_eq!(4, calc_vic::calc_with_1::sum_plus_one(1, 2));
    ///     assert_eq!(1, calc_vic::calc_with_1::sum_plus_one(0, 0));
    /// ```
    pub fn sum_plus_one(x: u8, y: u8) -> u8 {
        x + y + 1
    }

    /// # Essa funcao faz uma subtracao e subtrai 1 
    /// 
    ///  - Se o primeiro parametro for menor ou igual o segundo vai retornar 0
    /// 
    /// # exemplo
    /// 
    /// ```rust
    ///     use calc_vic;
    /// 
    ///     assert_eq!(40, calc_vic::calc_with_1::sub_less_one(41, 0));
    ///     assert_eq!(0, calc_vic::calc_with_1::sub_less_one(6, 6));
    ///     assert_eq!(0, calc_vic::calc_with_1::sub_less_one(5, 50));
    /// ```
    pub fn sub_less_one(x: u8, y: u8) -> u8 {
        if x <= y {
            return 0;
        }
        x - y - 1
    }
}

#[cfg(test)]
mod test {
    use super::calc_with_1;

    #[test]
    fn test_sum() {
        let result = calc_with_1::sum_plus_one(5, 6);
        let expected = 12;
        assert_eq!(result, expected);
    }

    #[test]
    fn test_sub_failed() {
        let result = calc_with_1::sub_less_one(5, 6);
        let expected = 0;
        assert_eq!(result, expected);
    }

    #[test]
    fn test_sub_failed2() {
        let result = calc_with_1::sub_less_one(5, 6);
        let expected = 0;
        assert_eq!(result, expected);
    }

    #[test]
    fn test_sub() {
        let result = calc_with_1::sub_less_one(6, 1);
        let expected = 4;
        assert_eq!(result, expected);
    }
}