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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/unwrap_expect_used.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unwrap_expect_used.rs b/src/tools/clippy/tests/ui/unwrap_expect_used.rs new file mode 100644 index 000000000..9f27fef82 --- /dev/null +++ b/src/tools/clippy/tests/ui/unwrap_expect_used.rs @@ -0,0 +1,35 @@ +#![warn(clippy::unwrap_used, clippy::expect_used)] + +trait OptionExt { + type Item; + + fn unwrap_err(self) -> Self::Item; + + fn expect_err(self, msg: &str) -> Self::Item; +} + +impl<T> OptionExt for Option<T> { + type Item = T; + fn unwrap_err(self) -> T { + panic!(); + } + + fn expect_err(self, msg: &str) -> T { + panic!(); + } +} + +fn main() { + Some(3).unwrap(); + Some(3).expect("Hello world!"); + + // Don't trigger on unwrap_err on an option + Some(3).unwrap_err(); + Some(3).expect_err("Hellow none!"); + + let a: Result<i32, i32> = Ok(3); + a.unwrap(); + a.expect("Hello world!"); + a.unwrap_err(); + a.expect_err("Hello error!"); +} |