diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/match_single_binding2.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/match_single_binding2.rs | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/match_single_binding2.rs b/src/tools/clippy/tests/ui/match_single_binding2.rs new file mode 100644 index 000000000..476386eba --- /dev/null +++ b/src/tools/clippy/tests/ui/match_single_binding2.rs @@ -0,0 +1,55 @@ +// run-rustfix + +#![warn(clippy::match_single_binding)] +#![allow(unused_variables)] + +fn main() { + // Lint (additional curly braces needed, see #6572) + struct AppendIter<I> + where + I: Iterator, + { + inner: Option<(I, <I as Iterator>::Item)>, + } + + #[allow(dead_code)] + fn size_hint<I: Iterator>(iter: &AppendIter<I>) -> (usize, Option<usize>) { + match &iter.inner { + Some((iter, _item)) => match iter.size_hint() { + (min, max) => (min.saturating_add(1), max.and_then(|max| max.checked_add(1))), + }, + None => (0, Some(0)), + } + } + + // Lint (no additional curly braces needed) + let opt = Some((5, 2)); + let get_tup = || -> (i32, i32) { (1, 2) }; + match opt { + #[rustfmt::skip] + Some((first, _second)) => { + match get_tup() { + (a, b) => println!("a {:?} and b {:?}", a, b), + } + }, + None => println!("nothing"), + } + + fn side_effects() {} + + // Lint (scrutinee has side effects) + // issue #7094 + match side_effects() { + _ => println!("Side effects"), + } + + // Lint (scrutinee has side effects) + // issue #7094 + let x = 1; + match match x { + 0 => 1, + _ => 2, + } { + _ => println!("Single branch"), + } +} |