from_lib() -> &'static str1pub fn from_lib() -> &'static str { 2 env!("USER_DEFINED_KEY") 3 } 4 5 #[cfg(test)] 6 mod tests { 7 #[test] verify_from_lib()8 fn verify_from_lib() { 9 assert_eq!(super::from_lib(), "USER_DEFINED_VALUE"); 10 } 11 12 #[test] verify_from_test()13 fn verify_from_test() { 14 assert_eq!(env!("USER_DEFINED_KEY"), "USER_DEFINED_VALUE"); 15 } 16 } 17