embedded-unit-converter/src/lib.rs

fn convert_celsius_to_fahrenheit(celsius: f32) -> f32 {
    celsius * 1.8 + 32.0
}

#[cfg(test)]
mod tests {

    use super::convert_celsius_to_fahrenheit;

    #[test]
    fn conversion_celsius_to_fahrenheit() {
        assert_eq!(convert_celsius_to_fahrenheit(25.0), 77.0);
    }
}