Add timer test

tracetools_test/test/test_timer.py

@@ -0,0 +1,35 @@
+import unittest
+from tracetools_test.utils import (
+    get_trace_event_names,
+    run_and_trace,
+    cleanup_trace,
+)
+
+PKG = 'tracetools_test'
+
+timer_events = [
+    'ros2:rcl_timer_init',
+    'ros2:rclcpp_timer_callback_added',
+    'ros2:rclcpp_timer_callback_start',
+    'ros2:rclcpp_timer_callback_end',
+]
+
+class TestTimer(unittest.TestCase):
+
+    def test_all(self):
+        session_name_prefix = 'session-test-timer-all'
+        base_path = '/tmp'
+        test_nodes = ['test_timer']
+
+        exit_code, full_path = run_and_trace(base_path, session_name_prefix, timer_events, None, PKG, test_nodes)
+        self.assertEqual(exit_code, 0)
+
+        trace_events = get_trace_event_names(full_path)
+        print(f'trace_events: {trace_events}')
+        self.assertSetEqual(set(timer_events), trace_events)
+
+        cleanup_trace(full_path)
+
+
+if __name__ == '__main__':
+    unittest.main()