Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/5193#discussion_r159154132
--- Diff:
flink-streaming-java/src/test/java/org/apache/flink/streaming/util/AbstractStreamOperatorTestHarness.java
---
@@ -492,6 +503,10 @@ public void close() throws Exception {
processingTimeService.shutdownService();
}
setupCalled = false;
+
+ if (internalEnvironment.isPresent()) {
--- End diff --
I think to enable this `Environment` must implement `AutoCloseable` as
well. Maybe an empty default `close()` method?
If you decide to stick with `Optional`, maybe change this line to:
`internalEnvironment.ifPresent(MockEnvironment::close);`
---
