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//! TBD. fn main() { // TODO: Write a binary. println!("2 + 3 = {}", add(2, 3)); } fn add(a: i32, b: i32) -> i32 { a + b } #[cfg(test)] mod tests { use super::*; #[test] fn test_add() { assert_eq!(add(2, 3), 5); } }