Test Runner MCP

#[cfg(test)] mod tests { #[test] fn test_addition() { assert_eq!(2 + 2, 4); } #[test] fn test_string() { let s = "hello"; assert_eq!(s.to_uppercase(), "HELLO"); } #[test] fn test_vector() { let v = vec![1, 2, 3]; assert_eq!(v.len(), 3); } #[test] fn test_with_output() { println!("some test output"); assert!(true); } }