diff --git a/crates/hir_def/src/macro_expansion_tests/mbe.rs b/crates/hir_def/src/macro_expansion_tests/mbe.rs
index cf62b4f588..609eac855b 100644
--- a/crates/hir_def/src/macro_expansion_tests/mbe.rs
+++ b/crates/hir_def/src/macro_expansion_tests/mbe.rs
@@ -1558,3 +1558,39 @@ impl Clone for D3DCONTENTPROTECTIONCAPS {
 "##]],
     );
 }
+
+#[test]
+fn test_int_base() {
+    check(
+        r#"
+macro_rules! int_base {
+    ($Trait:ident for $T:ident as $U:ident -> $Radix:ident) => {
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl fmt::$Trait for $T {
+            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                $Radix.fmt_int(*self as $U, f)
+            }
+        }
+    }
+}
+int_base!{Binary for isize as usize -> Binary}
+"#,
+        expect![[r##"
+macro_rules! int_base {
+    ($Trait:ident for $T:ident as $U:ident -> $Radix:ident) => {
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl fmt::$Trait for $T {
+            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+                $Radix.fmt_int(*self as $U, f)
+            }
+        }
+    }
+}
+#[stable(feature = "rust1", since = "1.0.0")] impl fmt::Binary for isize {
+    fn fmt(&self , f: &mut fmt::Formatter< '_>) -> fmt::Result {
+        Binary.fmt_int(*self as usize, f)
+    }
+}
+"##]],
+    );
+}
diff --git a/crates/mbe/src/tests/expand.rs b/crates/mbe/src/tests/expand.rs
index 7b6c5a8bdd..8c2e656a4c 100644
--- a/crates/mbe/src/tests/expand.rs
+++ b/crates/mbe/src/tests/expand.rs
@@ -98,26 +98,6 @@ fn test_attr_to_token_tree() {
     );
 }
 
-#[test]
-fn test_int_base() {
-    parse_macro(
-        r#"
-macro_rules! int_base {
-    ($Trait:ident for $T:ident as $U:ident -> $Radix:ident) => {
-        #[stable(feature = "rust1", since = "1.0.0")]
-        impl fmt::$Trait for $T {
-            fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-                $Radix.fmt_int(*self as $U, f)
-            }
-        }
-    }
-}
-"#,
-    ).assert_expand_items(r#" int_base!{Binary for isize as usize -> Binary}"#,
-        "# [stable (feature = \"rust1\" , since = \"1.0.0\")] impl fmt ::Binary for isize {fn fmt (& self , f : & mut fmt :: Formatter < \'_ >) -> fmt :: Result {Binary . fmt_int (* self as usize , f)}}"
-    );
-}
-
 #[test]
 fn test_generate_pattern_iterators() {
     // from https://github.com/rust-lang/rust/blob/316a391dcb7d66dc25f1f9a4ec9d368ef7615005/src/libcore/str/mod.rs