1 // compile-flags: --test
3 #![allow(unused_mut, clippy::get_first, clippy::from_iter_instead_of_collect)]
4 #![warn(clippy::unwrap_used)]
5 #![deny(clippy::get_unwrap)]
7 use std::collections::BTreeMap;
8 use std::collections::HashMap;
9 use std::collections::VecDeque;
11 struct GetFalsePositive {
15 impl GetFalsePositive {
16 fn get(&self, pos: usize) -> Option<&u32> {
19 fn get_mut(&mut self, pos: usize) -> Option<&mut u32> {
25 let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
26 let mut some_slice = &mut [0, 1, 2, 3];
27 let mut some_vec = vec![0, 1, 2, 3];
28 let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
29 let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
30 let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
31 let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };
34 // Test `get().unwrap()`
35 let _ = boxed_slice.get(1).unwrap();
36 let _ = some_slice.get(0).unwrap();
37 let _ = some_vec.get(0).unwrap();
38 let _ = some_vecdeque.get(0).unwrap();
39 let _ = some_hashmap.get(&1).unwrap();
40 let _ = some_btreemap.get(&1).unwrap();
41 #[allow(clippy::unwrap_used)]
42 let _ = false_positive.get(0).unwrap();
44 let _: u8 = *boxed_slice.get(1).unwrap();
48 // Test `get_mut().unwrap()`
49 *boxed_slice.get_mut(0).unwrap() = 1;
50 *some_slice.get_mut(0).unwrap() = 1;
51 *some_vec.get_mut(0).unwrap() = 1;
52 *some_vecdeque.get_mut(0).unwrap() = 1;
53 // Check false positives
54 #[allow(clippy::unwrap_used)]
56 *some_hashmap.get_mut(&1).unwrap() = 'b';
57 *some_btreemap.get_mut(&1).unwrap() = 'b';
58 *false_positive.get_mut(0).unwrap() = 1;
63 // Test `get().unwrap().foo()` and `get_mut().unwrap().bar()`
64 let _ = some_vec.get(0..1).unwrap().to_vec();
65 let _ = some_vec.get_mut(0..1).unwrap().to_vec();
71 let boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
72 let _ = boxed_slice.get(1).unwrap();