1 files changed, 19 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/ref_patterns.rs b/src/tools/clippy/tests/ui/ref_patterns.rs
new file mode 100644
index 00000000000..c51e0bc76ef
--- /dev/null
+++ b/src/tools/clippy/tests/ui/ref_patterns.rs
@@ -0,0 +1,19 @@
+#![allow(unused)]
+#![warn(clippy::ref_patterns)]
+
+fn use_in_pattern() {
+    let opt = Some(5);
+    match opt {
+        None => {},
+        Some(ref opt) => {},
+    }
+}
+
+fn use_in_binding() {
+    let x = 5;
+    let ref y = x;
+}
+
+fn use_in_parameter(ref x: i32) {}
+
+fn main() {}