1 files changed, 21 insertions, 0 deletions
diff --git a/tests/rustdoc-js/impl-trait.rs b/tests/rustdoc-js/impl-trait.rs
new file mode 100644
index 00000000000..fb8869b46f3
--- /dev/null
+++ b/tests/rustdoc-js/impl-trait.rs
@@ -0,0 +1,21 @@
+pub trait Aaaaaaa {}
+
+impl Aaaaaaa for () {}
+
+pub fn bbbbbbb() -> impl Aaaaaaa {
+    ()
+}
+
+pub struct Ccccccc {}
+
+impl Ccccccc {
+    pub fn ddddddd(&self) -> impl Aaaaaaa {
+        ()
+    }
+    pub fn eeeeeee(&self, _x: impl Aaaaaaa) -> i32 {
+        0
+    }
+    pub fn fffffff(&self, x: impl Aaaaaaa) -> impl Aaaaaaa {
+        x
+    }
+}