1 files changed, 10 insertions, 0 deletions
diff --git a/src/libcoretest/str.rs b/src/libcoretest/str.rs
index 9bd7cf9833e..acd8cc42c72 100644
--- a/src/libcoretest/str.rs
+++ b/src/libcoretest/str.rs
@@ -9,6 +9,16 @@
 // except according to those terms.
 
 #[test]
+fn test_pattern_deref_forward() {
+    let data = "aabcdaa";
+    assert!(data.contains("bcd"));
+    assert!(data.contains(&"bcd"));
+    assert!(data.contains(&&"bcd"));
+    assert!(data.contains(&"bcd".to_string()));
+    assert!(data.contains(&&"bcd".to_string()));
+}
+
+#[test]
 fn test_empty_match_indices() {
     let data = "aä中!";
     let vec: Vec<_> = data.match_indices("").collect();