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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/manual_ok_or.rs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/manual_ok_or.rs b/src/tools/clippy/tests/ui/manual_ok_or.rs new file mode 100644 index 000000000..3c99872f5 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_ok_or.rs @@ -0,0 +1,44 @@ +// run-rustfix +#![warn(clippy::manual_ok_or)] +#![allow(clippy::blacklisted_name)] +#![allow(clippy::redundant_closure)] +#![allow(dead_code)] +#![allow(unused_must_use)] + +fn main() { + // basic case + let foo: Option<i32> = None; + foo.map_or(Err("error"), |v| Ok(v)); + + // eta expansion case + foo.map_or(Err("error"), Ok); + + // turbo fish syntax + None::<i32>.map_or(Err("error"), |v| Ok(v)); + + // multiline case + #[rustfmt::skip] + foo.map_or(Err::<i32, &str>( + &format!( + "{}{}{}{}{}{}{}", + "Alice", "Bob", "Sarah", "Marc", "Sandra", "Eric", "Jenifer") + ), + |v| Ok(v), + ); + + // not applicable, closure isn't direct `Ok` wrapping + foo.map_or(Err("error"), |v| Ok(v + 1)); + + // not applicable, or side isn't `Result::Err` + foo.map_or(Ok::<i32, &str>(1), |v| Ok(v)); + + // not applicable, expr is not a `Result` value + foo.map_or(42, |v| v); + + // TODO patterns not covered yet + match foo { + Some(v) => Ok(v), + None => Err("error"), + }; + foo.map_or_else(|| Err("error"), |v| Ok(v)); +} |