[GitHub] [beam] rohdesamuel commented on a change in pull request #10994: [BEAM-8335] TeststreamService integration with DirectRunner

[GitBox <gi...@apache.org>]

rohdesamuel commented on a change in pull request #10994: [BEAM-8335] TeststreamService integration with DirectRunner
URL: https://github.com/apache/beam/pull/10994#discussion_r387973912
 
 

 ##########
 File path: sdks/python/apache_beam/runners/direct/transform_evaluator.py
 ##########
 @@ -527,9 +548,21 @@ def process_element(self, element):
       for event in self.test_stream._set_up(self.test_stream.output_tags):
         events.append(event)
 
-    events += [e for e in self.test_stream.events(self.current_index)]
+    # Index into the global state of all the different TestStream event streams.
+    # Retrieve this TestStream's event stream and read from it.
+    try:
+      events = [next(self.test_stream_events[self.event_index])]
 
 Review comment:
   This should be `events +=` instead of `events =`

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