1 files changed, 11 insertions, 1 deletions

diff --git a/crates/ra_assists/src/doc_tests.rs b/crates/ra_assists/src/doc_tests.rs
index 0ccf9d730..6e1e3de84 100644
--- a/crates/ra_assists/src/doc_tests.rs
+++ b/crates/ra_assists/src/doc_tests.rs
@@ -17,7 +17,17 @@ fn check(assist_id: &str, before: &str, after: &str) {
     let (_assist_id, action) = crate::assists(&db, frange)
         .into_iter()
         .find(|(id, _)| id.id.0 == assist_id)
-        .unwrap_or_else(|| panic!("Assist {:?} is not applicable", assist_id));
+        .unwrap_or_else(|| {
+            panic!(
+                "\n\nAssist is not applicable: {}\nAvailable assists: {}",
+                assist_id,
+                crate::assists(&db, frange)
+                    .into_iter()
+                    .map(|(id, _)| id.id.0)
+                    .collect::<Vec<_>>()
+                    .join(", ")
+            )
+        });
 
     let actual = action.edit.apply(&before);
     assert_eq_text!(after, &actual);