Fix tests by splitting them into two separate files

tracetools_test/test/test_subscription_callback.py

@@ -0,0 +1,33 @@
+import unittest
+from tracetools_test.utils import (
+    get_trace_event_names,
+    run_and_trace,
+    cleanup_trace,
+)
+
+PKG = 'tracetools_test'
+
+subscription_callback_events = [
+    'ros2:rclcpp_subscription_callback_start',
+    'ros2:rclcpp_subscription_callback_end',
+]
+
+class TestSubscriptionCallback(unittest.TestCase):
+
+    def test_callback(self):
+        session_name_prefix = 'session-test-subscription-callback'
+        base_path = '/tmp'
+        test_nodes = ['test_ping', 'test_pong']
+
+        exit_code, full_path = run_and_trace(base_path, session_name_prefix, subscription_callback_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(subscription_callback_events), trace_events)
+
+        cleanup_trace(full_path)
+
+
+if __name__ == '__main__':
+    unittest.main()