src/test/run-make/coverage/closure_macro.rs

   1 // compile-flags: --edition=2018
   2 #![feature(no_coverage)]
   3
   4 macro_rules! bail {
   5     ($msg:literal $(,)?) => {
   6         if $msg.len() > 0 {
   7             println!("no msg");
   8         } else {
   9             println!($msg);
  10         }
  11         return Err(String::from($msg));
  12     };
  13 }
  14
  15 macro_rules! on_error {
  16     ($value:expr, $error_message:expr) => {
  17         $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
  18             let message = format!($error_message, e);
  19             if message.len() > 0 {
  20                 println!("{}", message);
  21                 Ok(String::from("ok"))
  22             } else {
  23                 bail!("error");
  24             }
  25         })
  26     };
  27 }
  28
  29 fn load_configuration_files() -> Result<String, String> {
  30     Ok(String::from("config"))
  31 }
  32
  33 pub fn main() -> Result<(), String> {
  34     println!("Starting service");
  35     let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
  36
  37     let startup_delay_duration = String::from("arg");
  38     let _ = (config, startup_delay_duration);
  39     Ok(())
  40 }