chore: Tweak error message for $ref resolution failures

Author: edgarrmondragon

singer_sdk/schema/source.py

@@ -229,7 +229,7 @@ def fetch_schema(self, key: str) -> dict[str, t.Any]:
             resolved_schema = resolve_schema_references(schema)
             return resolved_schema.get("components", {}).get("schemas", {}).get(key, {})  # type: ignore[no-any-return]
         except PointerToNowhere as e:
-            msg = f"Schema component '{key}' not found"
+            msg = f"Failed to resolve schema references for '{key}'"
             raise SchemaNotFoundError(msg) from e
 
 

tests/core/schema/test_source.py

@@ -288,7 +288,7 @@ def test_openapi_invalid_component(
         source = OpenAPISchema(openapi_file)
         with pytest.raises(
             SchemaNotFoundError,
-            match="Schema component 'InvalidComponent' not found",
+            match="Failed to resolve schema references for 'InvalidComponent'",
         ):
             source.get_schema("InvalidComponent")