| #[macro_use] |
| extern crate failure; |
| |
| // NOTE: |
| // |
| // This test is in a separate file due to the fact that ensure! cannot be used |
| // from within failure. |
| // |
| // (you get: 'macro-expanded `macro_export` macros from the current crate cannot |
| // be referred to by absolute paths') |
| |
| // Encloses an early-returning macro in an IIFE so that we |
| // can treat it as a Result-returning function. |
| macro_rules! wrap_early_return { |
| ($expr:expr) => {{ |
| fn func() -> Result<(), failure::Error> { |
| let _ = $expr; |
| |
| #[allow(unreachable_code)] |
| Ok(()) |
| } |
| func().map_err(|e| e.to_string()) |
| }}; |
| } |
| |
| #[test] |
| fn bail() { |
| assert_eq!( |
| wrap_early_return!(bail!("test")), |
| wrap_early_return!(bail!("test",))); |
| assert_eq!( |
| wrap_early_return!(bail!("test {}", 4)), |
| wrap_early_return!(bail!("test {}", 4,))); |
| } |
| |
| #[test] |
| fn ensure() { |
| assert_eq!( |
| wrap_early_return!(ensure!(false, "test")), |
| wrap_early_return!(ensure!(false, "test",))); |
| assert_eq!( |
| wrap_early_return!(ensure!(false, "test {}", 4)), |
| wrap_early_return!(ensure!(false, "test {}", 4,))); |
| } |
| |
| #[test] |
| fn format_err() { |
| assert_eq!( |
| format_err!("test").to_string(), |
| format_err!("test",).to_string()); |
| assert_eq!( |
| format_err!("test {}", 4).to_string(), |
| format_err!("test {}", 4,).to_string()); |
| } |
