3 #![allow(unused_mut, 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;
10 use std::iter::FromIterator;
12 struct GetFalsePositive {
16 impl GetFalsePositive {
17 fn get(&self, pos: usize) -> Option<&u32> {
20 fn get_mut(&mut self, pos: usize) -> Option<&mut u32> {
26 let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
27 let mut some_slice = &mut [0, 1, 2, 3];
28 let mut some_vec = vec![0, 1, 2, 3];
29 let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
30 let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
31 let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
32 let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };
35 // Test `get().unwrap()`
36 let _ = boxed_slice.get(1).unwrap();
37 let _ = some_slice.get(0).unwrap();
38 let _ = some_vec.get(0).unwrap();
39 let _ = some_vecdeque.get(0).unwrap();
40 let _ = some_hashmap.get(&1).unwrap();
41 let _ = some_btreemap.get(&1).unwrap();
42 #[allow(clippy::unwrap_used)]
43 let _ = false_positive.get(0).unwrap();
45 let _: u8 = *boxed_slice.get(1).unwrap();
49 // Test `get_mut().unwrap()`
50 *boxed_slice.get_mut(0).unwrap() = 1;
51 *some_slice.get_mut(0).unwrap() = 1;
52 *some_vec.get_mut(0).unwrap() = 1;
53 *some_vecdeque.get_mut(0).unwrap() = 1;
54 // Check false positives
55 #[allow(clippy::unwrap_used)]
57 *some_hashmap.get_mut(&1).unwrap() = 'b';
58 *some_btreemap.get_mut(&1).unwrap() = 'b';
59 *false_positive.get_mut(0).unwrap() = 1;
64 // Test `get().unwrap().foo()` and `get_mut().unwrap().bar()`
65 let _ = some_vec.get(0..1).unwrap().to_vec();
66 let _ = some_vec.get_mut(0..1).unwrap().to_vec();