mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-30 06:53:27 +00:00
92 lines
2.6 KiB
Rust
92 lines
2.6 KiB
Rust
//@compile-flags: --test
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#![allow(unused_mut, clippy::get_first, clippy::from_iter_instead_of_collect)]
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#![warn(clippy::unwrap_used)]
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#![deny(clippy::get_unwrap)]
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use std::collections::BTreeMap;
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use std::collections::HashMap;
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use std::collections::VecDeque;
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struct GetFalsePositive {
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arr: [u32; 3],
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}
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impl GetFalsePositive {
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fn get(&self, pos: usize) -> Option<&u32> {
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self.arr.get(pos)
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}
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fn get_mut(&mut self, pos: usize) -> Option<&mut u32> {
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self.arr.get_mut(pos)
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}
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}
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fn main() {
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let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
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let mut some_slice = &mut [0, 1, 2, 3];
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let mut some_vec = vec![0, 1, 2, 3];
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let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
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let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
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let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
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let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };
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{
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// Test `get().unwrap()`
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let _ = boxed_slice.get(1).unwrap();
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let _ = some_slice.get(0).unwrap();
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let _ = some_vec.get(0).unwrap();
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let _ = some_vecdeque.get(0).unwrap();
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let _ = some_hashmap.get(&1).unwrap();
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let _ = some_btreemap.get(&1).unwrap();
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#[allow(clippy::unwrap_used)]
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let _ = false_positive.get(0).unwrap();
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// Test with deref
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let _: u8 = *boxed_slice.get(1).unwrap();
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}
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{
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// Test `get_mut().unwrap()`
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*boxed_slice.get_mut(0).unwrap() = 1;
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*some_slice.get_mut(0).unwrap() = 1;
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*some_vec.get_mut(0).unwrap() = 1;
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*some_vecdeque.get_mut(0).unwrap() = 1;
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// Check false positives
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#[allow(clippy::unwrap_used)]
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{
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*some_hashmap.get_mut(&1).unwrap() = 'b';
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*some_btreemap.get_mut(&1).unwrap() = 'b';
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*false_positive.get_mut(0).unwrap() = 1;
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}
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}
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{
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// Test `get().unwrap().foo()` and `get_mut().unwrap().bar()`
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let _ = some_vec.get(0..1).unwrap().to_vec();
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let _ = some_vec.get_mut(0..1).unwrap().to_vec();
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}
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}
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#[test]
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fn test() {
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let boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
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let _ = boxed_slice.get(1).unwrap();
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}
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#[cfg(test)]
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mod issue9612 {
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// should not lint in `#[cfg(test)]` modules
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#[test]
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fn test_fn() {
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let _a: u8 = 2.try_into().unwrap();
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let _a: u8 = 3.try_into().expect("");
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util();
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}
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fn util() {
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let _a: u8 = 4.try_into().unwrap();
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let _a: u8 = 5.try_into().expect("");
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// should still warn
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let _ = Box::new([0]).get(1).unwrap();
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}
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}
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