pub mod math {
/// Add two numbers
pub fn add(a: f64, b: f64) -> f64 {
a + b
}
/// Subtract two numbers
pub fn subtract(a: f64, b: f64) -> f64 {
a - b
}
/// Multiply two numbers
pub fn multiply(a: f64, b: f64) -> f64 {
a * b
}
/// Divide two numbers
pub fn divide(a: f64, b: f64) -> f64 {
if b == 0.0 {
panic!("Division by zero");
}
a / b
}
}
#[cfg(test)]
mod tests {
use super::math;
#[test]
fn test_add() {
assert_eq!(math::add(2.0, 3.0), 5.0);
assert_eq!(math::add(-1.0, 1.0), 0.0);
assert_eq!(math::add(0.0, 0.0), 0.0);
}
#[test]
fn test_subtract() {
assert_eq!(math::subtract(5.0, 3.0), 2.0);
assert_eq!(math::subtract(0.0, 5.0), -5.0);
assert_eq!(math::subtract(3.0, 3.0), 0.0);
}
#[test]
fn test_multiply() {
assert_eq!(math::multiply(2.0, 3.0), 6.0);
assert_eq!(math::multiply(-2.0, 3.0), -6.0);
assert_eq!(math::multiply(0.0, 5.0), 0.0);
}
#[test]
fn test_divide() {
assert_eq!(math::divide(6.0, 2.0), 3.0);
assert_eq!(math::divide(5.0, 2.0), 2.5);
assert_eq!(math::divide(-6.0, 2.0), -3.0);
}
#[test]
#[should_panic]
fn test_divide_by_zero() {
math::divide(5.0, 0.0);
}
}
