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https://issues.apache.org/jira/browse/FLINK-10828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16681072#comment-16681072
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Stefan Richter commented on FLINK-10828:
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When I was talking to [[email protected]], he said that we have already a
similar test, checking that all implementations of a certain interface are
tested, but I don't remember which test that was. So my assumption is we can do
something similar here. For the second part, I think there is no alternative to
manually checking this. But it also only applies to some serializers. We could
simplify this by creating a wrapper that can make any serializer artifiacially
stateful, e.g. by buffering the reads and writes etc., so that we can still use
simple stuff like {{IntSerializer}} and just wrap if we use it as an inner
serializer.
> Enforce that all TypeSerializers are tested through SerializerTestBase
> ----------------------------------------------------------------------
>
> Key: FLINK-10828
> URL: https://issues.apache.org/jira/browse/FLINK-10828
> Project: Flink
> Issue Type: Test
> Components: Tests
> Reporter: Stefan Richter
> Priority: Major
>
> As pointed out in FLINK-10827, type serializers are a common source of bugs
> and we should try to enforce that every type serializer (that is not
> exclusive to tests) is tested at least through a test that extends the
> {{SerializerTestBase}}. We should also check that the tests of composite
> serializers use inner serializers that are stateful and require proper
> duplication, or else the tests can pass even if inner serializers are not
> properly duplicated.
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