62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
//@aux-build:proc_macro_derive.rs
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#![warn(clippy::ignored_unit_patterns)]
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#![allow(
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clippy::let_unit_value,
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clippy::redundant_pattern_matching,
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clippy::single_match,
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clippy::needless_borrow
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)]
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fn foo() -> Result<(), ()> {
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unimplemented!()
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}
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fn main() {
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match foo() {
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Ok(_) => {}, //~ ERROR: matching over `()` is more explicit
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Err(_) => {}, //~ ERROR: matching over `()` is more explicit
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}
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if let Ok(_) = foo() {}
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//~^ ERROR: matching over `()` is more explicit
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let _ = foo().map_err(|_| todo!());
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//~^ ERROR: matching over `()` is more explicit
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println!(
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"{:?}",
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match foo() {
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Ok(_) => {},
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//~^ ERROR: matching over `()` is more explicit
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Err(_) => {},
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//~^ ERROR: matching over `()` is more explicit
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}
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);
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}
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// ignored_unit_patterns in derive macro should be ok
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#[derive(proc_macro_derive::StructIgnoredUnitPattern)]
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pub struct B;
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#[allow(unused)]
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pub fn moo(_: ()) {
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let _ = foo().unwrap();
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//~^ ERROR: matching over `()` is more explicit
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let _: () = foo().unwrap();
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let _: () = ();
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}
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fn test_unit_ref_1() {
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let x: (usize, &&&&&()) = (1, &&&&&&());
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match x {
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(1, _) => unimplemented!(),
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//~^ ERROR: matching over `()` is more explicit
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_ => unimplemented!(),
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};
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}
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fn test_unit_ref_2(v: &[(usize, ())]) {
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for (x, _) in v {
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//~^ ERROR: matching over `()` is more explicit
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let _ = x;
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}
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}
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