Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/4937#discussion_r148572112 --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/instance/SlotPoolTest.java --- @@ -294,11 +296,11 @@ public void returnAllocatedSlot(Slot slot) { } } - private static ResourceManagerGateway createResourceManagerGatewayMock() { + static ResourceManagerGateway createResourceManagerGatewayMock() { ResourceManagerGateway resourceManagerGateway = mock(ResourceManagerGateway.class); --- End diff -- We could think about implementing a `SimpleAckingResourceManagerGateway` for testing purposes. That way we avoid mocking too much.
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