1 files changed, 20 insertions, 0 deletions
diff --git a/src/tools/rustfmt/config_proc_macro/tests/smoke.rs b/src/tools/rustfmt/config_proc_macro/tests/smoke.rs
new file mode 100644
index 000000000..940a8a0c2
--- /dev/null
+++ b/src/tools/rustfmt/config_proc_macro/tests/smoke.rs
@@ -0,0 +1,20 @@
+pub mod config {
+    pub trait ConfigType: Sized {
+        fn doc_hint() -> String;
+    }
+}
+
+#[allow(dead_code)]
+#[allow(unused_imports)]
+mod tests {
+    use rustfmt_config_proc_macro::config_type;
+
+    #[config_type]
+    enum Bar {
+        Foo,
+        Bar,
+        #[doc_hint = "foo_bar"]
+        FooBar,
+        FooFoo(i32),
+    }
+}