diff --git a/crates/hir_def/src/macro_expansion_tests/mbe/regression.rs b/crates/hir_def/src/macro_expansion_tests/mbe/regression.rs
index 527395992b..5f650d458a 100644
--- a/crates/hir_def/src/macro_expansion_tests/mbe/regression.rs
+++ b/crates/hir_def/src/macro_expansion_tests/mbe/regression.rs
@@ -640,3 +640,91 @@ quick_error!(ENUMINITION[enum Wrapped#[derive(Debug)]]body[]queue[ = > One: UNIT
 "##]],
     )
 }
+
+#[test]
+fn test_empty_repeat_vars_in_empty_repeat_vars() {
+    check(
+        r#"
+macro_rules! delegate_impl {
+    ([$self_type:ident, $self_wrap:ty, $self_map:ident]
+     pub trait $name:ident $(: $sup:ident)* $(+ $more_sup:ident)* {
+
+        $(
+        @escape [type $assoc_name_ext:ident]
+        )*
+        $(
+        @section type
+        $(
+            $(#[$_assoc_attr:meta])*
+            type $assoc_name:ident $(: $assoc_bound:ty)*;
+        )+
+        )*
+        $(
+        @section self
+        $(
+            $(#[$_method_attr:meta])*
+            fn $method_name:ident(self $(: $self_selftype:ty)* $(,$marg:ident : $marg_ty:ty)*) -> $mret:ty;
+        )+
+        )*
+        $(
+        @section nodelegate
+        $($tail:tt)*
+        )*
+    }) => {
+        impl<> $name for $self_wrap where $self_type: $name {
+            $(
+            $(
+                fn $method_name(self $(: $self_selftype)* $(,$marg: $marg_ty)*) -> $mret {
+                    $self_map!(self).$method_name($($marg),*)
+                }
+            )*
+            )*
+        }
+    }
+}
+delegate_impl ! {
+    [G, &'a mut G, deref] pub trait Data: GraphBase {@section type type NodeWeight;}
+}
+"#,
+        expect![[r##"
+macro_rules! delegate_impl {
+    ([$self_type:ident, $self_wrap:ty, $self_map:ident]
+     pub trait $name:ident $(: $sup:ident)* $(+ $more_sup:ident)* {
+
+        $(
+        @escape [type $assoc_name_ext:ident]
+        )*
+        $(
+        @section type
+        $(
+            $(#[$_assoc_attr:meta])*
+            type $assoc_name:ident $(: $assoc_bound:ty)*;
+        )+
+        )*
+        $(
+        @section self
+        $(
+            $(#[$_method_attr:meta])*
+            fn $method_name:ident(self $(: $self_selftype:ty)* $(,$marg:ident : $marg_ty:ty)*) -> $mret:ty;
+        )+
+        )*
+        $(
+        @section nodelegate
+        $($tail:tt)*
+        )*
+    }) => {
+        impl<> $name for $self_wrap where $self_type: $name {
+            $(
+            $(
+                fn $method_name(self $(: $self_selftype)* $(,$marg: $marg_ty)*) -> $mret {
+                    $self_map!(self).$method_name($($marg),*)
+                }
+            )*
+            )*
+        }
+    }
+}
+impl <> Data for & 'amut G where G: Data {}
+"##]],
+    );
+}
diff --git a/crates/mbe/src/tests/expand.rs b/crates/mbe/src/tests/expand.rs
index c3c753cf55..6c2e91668e 100644
--- a/crates/mbe/src/tests/expand.rs
+++ b/crates/mbe/src/tests/expand.rs
@@ -98,54 +98,6 @@ fn test_attr_to_token_tree() {
     );
 }
 
-#[test]
-fn test_empty_repeat_vars_in_empty_repeat_vars() {
-    parse_macro(
-        r#"
-macro_rules! delegate_impl {
-    ([$self_type:ident, $self_wrap:ty, $self_map:ident]
-     pub trait $name:ident $(: $sup:ident)* $(+ $more_sup:ident)* {
-
-        $(
-        @escape [type $assoc_name_ext:ident]
-        )*
-        $(
-        @section type
-        $(
-            $(#[$_assoc_attr:meta])*
-            type $assoc_name:ident $(: $assoc_bound:ty)*;
-        )+
-        )*
-        $(
-        @section self
-        $(
-            $(#[$_method_attr:meta])*
-            fn $method_name:ident(self $(: $self_selftype:ty)* $(,$marg:ident : $marg_ty:ty)*) -> $mret:ty;
-        )+
-        )*
-        $(
-        @section nodelegate
-        $($tail:tt)*
-        )*
-    }) => {
-        impl<> $name for $self_wrap where $self_type: $name {
-            $(
-            $(
-                fn $method_name(self $(: $self_selftype)* $(,$marg: $marg_ty)*) -> $mret {
-                    $self_map!(self).$method_name($($marg),*)
-                }
-            )*
-            )*
-        }
-    }
-}
-"#,
-    ).assert_expand_items(
-        r#"delegate_impl ! {[G , & 'a mut G , deref] pub trait Data : GraphBase {@ section type type NodeWeight ;}}"#,
-        "impl <> Data for & \'a mut G where G : Data {}",
-    );
-}
-
 #[test]
 fn expr_interpolation() {
     let expanded = parse_macro(