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Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/result_map_or_into_option.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/result_map_or_into_option.rs b/src/tools/clippy/tests/ui/result_map_or_into_option.rs new file mode 100644 index 000000000..3058480e2 --- /dev/null +++ b/src/tools/clippy/tests/ui/result_map_or_into_option.rs @@ -0,0 +1,19 @@ +// run-rustfix + +#![warn(clippy::result_map_or_into_option)] + +fn main() { + let opt: Result<u32, &str> = Ok(1); + let _ = opt.map_or(None, Some); + + let rewrap = |s: u32| -> Option<u32> { Some(s) }; + + // A non-Some `f` arg should not emit the lint + let opt: Result<u32, &str> = Ok(1); + let _ = opt.map_or(None, rewrap); + + // A non-Some `f` closure where the argument is not used as the + // return should not emit the lint + let opt: Result<u32, &str> = Ok(1); + opt.map_or(None, |_x| Some(1)); +} |