1 files changed, 130 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/clear_with_drain.stderr b/src/tools/clippy/tests/ui/clear_with_drain.stderr
new file mode 100644
index 000000000..20158da11
--- /dev/null
+++ b/src/tools/clippy/tests/ui/clear_with_drain.stderr
@@ -0,0 +1,130 @@
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:23:7
+   |
+LL |     v.drain(0..v.len());
+   |       ^^^^^^^^^^^^^^^^^ help: try: `clear()`
+   |
+   = note: `-D clippy::clear-with-drain` implied by `-D warnings`
+
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:27:7
+   |
+LL |     v.drain(usize::MIN..v.len());
+   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:46:7
+   |
+LL |     v.drain(0..);
+   |       ^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:50:7
+   |
+LL |     v.drain(usize::MIN..);
+   |       ^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:66:7
+   |
+LL |     v.drain(..);
+   |       ^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `Vec`
+  --> $DIR/clear_with_drain.rs:83:7
+   |
+LL |     v.drain(..v.len());
+   |       ^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:121:11
+   |
+LL |     deque.drain(0..deque.len());
+   |           ^^^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:125:11
+   |
+LL |     deque.drain(usize::MIN..deque.len());
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:144:11
+   |
+LL |     deque.drain(0..);
+   |           ^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:148:11
+   |
+LL |     deque.drain(usize::MIN..);
+   |           ^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:164:11
+   |
+LL |     deque.drain(..);
+   |           ^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `VecDeque`
+  --> $DIR/clear_with_drain.rs:181:11
+   |
+LL |     deque.drain(..deque.len());
+   |           ^^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:219:7
+   |
+LL |     s.drain(0..s.len());
+   |       ^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:223:7
+   |
+LL |     s.drain(usize::MIN..s.len());
+   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:242:7
+   |
+LL |     s.drain(0..);
+   |       ^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:246:7
+   |
+LL |     s.drain(usize::MIN..);
+   |       ^^^^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:262:7
+   |
+LL |     s.drain(..);
+   |       ^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `String`
+  --> $DIR/clear_with_drain.rs:279:7
+   |
+LL |     s.drain(..s.len());
+   |       ^^^^^^^^^^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `HashSet`
+  --> $DIR/clear_with_drain.rs:317:9
+   |
+LL |     set.drain();
+   |         ^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `HashMap`
+  --> $DIR/clear_with_drain.rs:336:9
+   |
+LL |     map.drain();
+   |         ^^^^^^^ help: try: `clear()`
+
+error: `drain` used to clear a `BinaryHeap`
+  --> $DIR/clear_with_drain.rs:355:10
+   |
+LL |     heap.drain();
+   |          ^^^^^^^ help: try: `clear()`
+
+error: aborting due to 21 previous errors
+