33 lines
1.1 KiB
Rust
33 lines
1.1 KiB
Rust
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// run-rustfix
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#![warn(clippy::iter_empty)]
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#![allow(clippy::iter_next_slice, clippy::redundant_clone)]
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fn array() {
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assert_eq!([].into_iter().next(), Option::<i32>::None);
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assert_eq!([].iter_mut().next(), Option::<&mut i32>::None);
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assert_eq!([].iter().next(), Option::<&i32>::None);
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assert_eq!(None.into_iter().next(), Option::<i32>::None);
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assert_eq!(None.iter_mut().next(), Option::<&mut i32>::None);
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assert_eq!(None.iter().next(), Option::<&i32>::None);
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// Don't trigger on non-iter methods
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let _: Option<String> = None.clone();
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let _: [String; 0] = [].clone();
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}
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macro_rules! in_macros {
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() => {
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assert_eq!([].into_iter().next(), Option::<i32>::None);
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assert_eq!([].iter_mut().next(), Option::<&mut i32>::None);
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assert_eq!([].iter().next(), Option::<&i32>::None);
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assert_eq!(None.into_iter().next(), Option::<i32>::None);
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assert_eq!(None.iter_mut().next(), Option::<&mut i32>::None);
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assert_eq!(None.iter().next(), Option::<&i32>::None);
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};
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}
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fn main() {
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array();
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in_macros!();
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}
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