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Create test for wanted behavior

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This commit is contained in:
JarredAllen 2020-07-20 08:58:55 -07:00
parent 2e0f8b6cc6
commit 05bb6e6bdb
1 changed files with 7 additions and 0 deletions
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7
tests/ui/needless_collect.rs
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@ -8,6 +8,9 @@ use std::collections::{BTreeSet, HashMap, HashSet};
#[allow(unused_variables, clippy::iter_cloned_collect)]
fn main() {
let sample = [1; 5];
let indirect_with_into_iter = sample.iter().collect::<Vec<_>>();
let indirect_with_iter = sample.iter().collect::<Vec<_>>();;
let indirect_negative = sample.iter().collect::<Vec<_>>();;
let len = sample.iter().collect::<Vec<_>>().len();
if sample.iter().collect::<Vec<_>>().is_empty() {
// Empty
@ -18,4 +21,8 @@ fn main() {
sample.iter().collect::<HashSet<_>>().len();
// Neither should this
sample.iter().collect::<BTreeSet<_>>().len();
indirect_with_into_iter.into_iter().map(|x| (x, x+1)).collect::<HashMap<_, _>>();
indirect_with_iter.iter().map(|x| (x, x+1)).collect::<HashMap<_, _>>();
indirect_negative.iter().map(|x| (x, x+1)).collect::<HashMap<_, _>>();
indirect_negative.iter().map(|x| (x, x+1)).collect::<HashMap<_, _>>();
}