Add more tests and more test utils

tracetools_test/test/test_service_callback.py

@@ -30,8 +30,32 @@ class TestServiceCallback(TraceTestCase):
             nodes=['test_service_ping', 'test_service_pong']
         )
 
-    def test_callback(self):
-        pass
+    def test_all(self):
+        # Check events order as set (e.g. start before end)
+        self.assertEventsOrderSet(self._events_ros)
+
+        # Check fields
+        start_events = self.get_events_with_name('ros2:callback_start')
+        for event in start_events:
+            self.assertValidHandle(event, 'callback')
+            is_intra_process_value = self.get_field(event, 'is_intra_process')
+            self.assertIsInstance(is_intra_process_value, int, 'is_intra_process not int')
+            # Should not be 1 for services (yet)
+            self.assertEqual(
+                is_intra_process_value,
+                0,
+                f'invalid value for is_intra_process: {is_intra_process_value}')
+
+        end_events = self.get_events_with_name('ros2:callback_end')
+        for event in end_events:
+            self.assertValidHandle(event, 'callback')
+
+        # Check that there is at least a start/end pair for each node
+        for node in self._nodes:
+            test_start_events = self.get_events_with_procname(node, start_events)
+            test_end_events = self.get_events_with_procname(node, end_events)
+            self.assertGreater(len(test_start_events), 0, f'no start_callback events for node: {node}')
+            self.assertGreater(len(test_end_events), 0, f'no end_callback events for node: {node}')
 
 
 if __name__ == '__main__':