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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/try-block/try-block.rs | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/test/ui/try-block/try-block.rs b/src/test/ui/try-block/try-block.rs new file mode 100644 index 000000000..c29ccc704 --- /dev/null +++ b/src/test/ui/try-block/try-block.rs @@ -0,0 +1,75 @@ +// run-pass + +#![allow(non_camel_case_types)] +#![allow(dead_code)] +// compile-flags: --edition 2018 + +#![feature(try_blocks)] + +struct catch {} + +pub fn main() { + let catch_result: Option<_> = try { + let x = 5; + x + }; + assert_eq!(catch_result, Some(5)); + + let mut catch = true; + while catch { catch = false; } + assert_eq!(catch, false); + + catch = if catch { false } else { true }; + assert_eq!(catch, true); + + match catch { + _ => {} + }; + + let catch_err: Result<_, i32> = try { + Err(22)?; + 1 + }; + assert_eq!(catch_err, Err(22)); + + let catch_okay: Result<i32, i32> = try { + if false { Err(25)?; } + Ok::<(), i32>(())?; + 28 + }; + assert_eq!(catch_okay, Ok(28)); + + let catch_from_loop: Result<i32, i32> = try { + for i in 0..10 { + if i < 5 { Ok::<i32, i32>(i)?; } else { Err(i)?; } + } + 22 + }; + assert_eq!(catch_from_loop, Err(5)); + + let cfg_init; + let _res: Result<(), ()> = try { + cfg_init = 5; + }; + assert_eq!(cfg_init, 5); + + let cfg_init_2; + let _res: Result<(), ()> = try { + cfg_init_2 = 6; + Err(())?; + }; + assert_eq!(cfg_init_2, 6); + + let my_string = "test".to_string(); + let res: Result<&str, ()> = try { + // Unfortunately, deref doesn't fire here (#49356) + &my_string[..] + }; + assert_eq!(res, Ok("test")); + + let my_opt: Option<_> = try { () }; + assert_eq!(my_opt, Some(())); + + let my_opt: Option<_> = try { }; + assert_eq!(my_opt, Some(())); +} |