Auto merge of #8374 - Alexendoo:bless-revisions, r=camsteffen

[rust.git] / tests / ui / needless_collect.rs

diff --git a/tests/ui/needless_collect.rs b/tests/ui/needless_collect.rs
index 5da77755d3919d254f865f16417eeca368f3e47a..8dc69bcf5b38df30295e0539b1a038916613861e 100644 (file)
--- a/tests/ui/needless_collect.rs
+++ b/tests/ui/needless_collect.rs
@@ -1,5 +1,11 @@
-#[warn(clippy, needless_collect)]
-#[allow(unused_variables, iter_cloned_collect)]
+// run-rustfix
+
+#![allow(unused, clippy::suspicious_map, clippy::iter_count)]
+
+use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, LinkedList};
+
+#[warn(clippy::needless_collect)]
+#[allow(unused_variables, clippy::iter_cloned_collect, clippy::iter_next_slice)]
 fn main() {
     let sample = [1; 5];
     let len = sample.iter().collect::<Vec<_>>().len();
@@ -7,4 +13,24 @@ fn main() {
         // Empty
     }
     sample.iter().cloned().collect::<Vec<_>>().contains(&1);
+    // #7164 HashMap's and BTreeMap's `len` usage should not be linted
+    sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
+    sample.iter().map(|x| (x, x)).collect::<BTreeMap<_, _>>().len();
+
+    sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().is_empty();
+    sample.iter().map(|x| (x, x)).collect::<BTreeMap<_, _>>().is_empty();
+
+    // Notice the `HashSet`--this should not be linted
+    sample.iter().collect::<HashSet<_>>().len();
+    // Neither should this
+    sample.iter().collect::<BTreeSet<_>>().len();
+
+    sample.iter().collect::<LinkedList<_>>().len();
+    sample.iter().collect::<LinkedList<_>>().is_empty();
+    sample.iter().cloned().collect::<LinkedList<_>>().contains(&1);
+    sample.iter().collect::<LinkedList<_>>().contains(&&1);
+
+    // `BinaryHeap` doesn't have `contains` method
+    sample.iter().collect::<BinaryHeap<_>>().len();
+    sample.iter().collect::<BinaryHeap<_>>().is_empty();
 }