Fix #10988: Validate manifest has group_map during group_lookup init

.changes/unreleased/Fixes-20241113-171516.yaml

@@ -0,0 +1,6 @@
+kind: Fixes
+body: Validate manifest has group_map during group_lookup init
+time: 2024-11-13T17:15:16.176082Z
+custom:
+    Author: aranke
+    Issue: "10988"

core/dbt/task/group_lookup.py

@@ -11,6 +11,9 @@
     if not manifest:
         return
 
+    if not manifest.groups:
+        return
+
     _every_group_name_to_group_map = {v.name: v for v in manifest.groups.values()}
 
     for group_name, node_ids in manifest.group_map.items():

tests/functional/logging/test_logging.py

@@ -277,3 +277,15 @@ def test_node_info_on_results(self, project, logs_dir):
                 run_result_warning_count += 1
 
         assert run_result_warning_count == 1
+
+
+class TestRunResultNoGroup:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "my_model.sql": "select 1 as id",
+        }
+
+    def test_node_info_on_results(self, project, logs_dir):
+        results = run_dbt(["--no-write-json", "run"])
+        assert len(results) == 1