fix(fed): bring in commit

apollo-federation/src/query_plan/fetch_dependency_graph.rs

@@ -3062,6 +3062,10 @@ fn compute_nodes_for_key_resolution<'a>(
     let dest = stack_item.tree.graph.node_weight(dest_id)?;
     // We shouldn't have a key on a non-composite type
     let source_type: CompositeTypeDefinitionPosition = source.type_.clone().try_into()?;
+    let source_schema: ValidFederationSchema = dependency_graph
+        .federated_query_graph
+        .schema_by_source(&source.source)?
+        .clone();
     let dest_type: CompositeTypeDefinitionPosition = dest.type_.clone().try_into()?;
     let dest_schema: ValidFederationSchema = dependency_graph
         .federated_query_graph
@@ -3153,7 +3157,7 @@ fn compute_nodes_for_key_resolution<'a>(
     let node =
         FetchDependencyGraph::node_weight_mut(&mut dependency_graph.graph, stack_item.node_id)?;
     let typename_field = Arc::new(OpPathElement::Field(Field::new_introspection_typename(
-        &dependency_graph.supergraph_schema,
+        &source_schema,
         &source_type,
         None,
     )));

apollo-federation/tests/query_plan/build_query_plan_tests/interface_object.rs

@@ -93,10 +93,6 @@ fn can_use_a_key_on_an_interface_object_type() {
 }
 
 #[test]
-#[should_panic(
-    expected = r#"Cannot add selection of field "I.__typename" to selection set of parent type "I" that is potentially an interface object type at runtime"#
-)]
-// TODO: investigate this failure
 fn can_use_a_key_on_an_interface_object_from_an_interface_object_type() {
     let planner = planner!(
         S1: SUBGRAPH1,
@@ -229,9 +225,10 @@ fn does_not_rely_on_an_interface_object_directly_for_typename() {
 
 #[test]
 #[should_panic(
-    expected = r#"Cannot add selection of field "I.__typename" to selection set of parent type "I" that is potentially an interface object type at runtime"#
+    expected = r#"Cannot add selection of field "I.id" to selection set of parent type "A""#
 )]
 // TODO: investigate this failure
+// - Fails to rebase on an interface object type in a subgraph.
 fn does_not_rely_on_an_interface_object_directly_if_a_specific_implementation_is_requested() {
     let planner = planner!(
         S1: SUBGRAPH1,
@@ -374,10 +371,6 @@ fn can_use_a_key_on_an_interface_object_type_even_for_a_concrete_implementation(
 }
 
 #[test]
-#[should_panic(
-    expected = r#"Cannot add selection of field "I.__typename" to selection set of parent type "I" that is potentially an interface object type at runtime"#
-)]
-// TODO: investigate this failure
 fn handles_query_of_an_interface_field_for_a_specific_implementation_when_query_starts_with_interface_object(
 ) {
     let planner = planner!(
@@ -434,9 +427,10 @@ fn handles_query_of_an_interface_field_for_a_specific_implementation_when_query_
 
 #[test]
 #[should_panic(
-    expected = r#"Cannot add selection of field "I.__typename" to selection set of parent type "I" that is potentially an interface object type at runtime"#
+    expected = r#"Cannot add selection of field "I.id" to selection set of parent type "A""#
 )]
 // TODO: investigate this failure
+// - Fails to rebase on an interface object type in a subgraph.
 fn it_avoids_buffering_interface_object_results_that_may_have_to_be_filtered_with_lists() {
     let planner = planner!(
         S1: r#"