move registration of event handlers before including test file

Signed-off-by: William Woodall <[email protected]>

Author: wjwwood

launch_testing/launch_testing/test_runner.py

@@ -122,10 +122,6 @@ def run(self):
         # the test and add our own event handlers for process IO and process exit:
         launch_description = LaunchDescription([
             *self._test_run_preamble,
-            launch.actions.IncludeLaunchDescription(
-                launch.LaunchDescriptionSource(launch_description=test_ld),
-                launch_arguments=parsed_launch_arguments
-            ),
             RegisterEventHandler(
                 OnProcessExit(on_exit=lambda info, unused: proc_info.append(info))
             ),
@@ -135,6 +131,10 @@ def run(self):
                     on_stderr=proc_output.append,
                 )
             ),
+            launch.actions.IncludeLaunchDescription(
+                launch.LaunchDescriptionSource(launch_description=test_ld),
+                launch_arguments=parsed_launch_arguments
+            ),
         ])
 
         self._launch_service.include_launch_description(