[jira] [Updated] (KAFKA-10200) MockProcessorContext doesn't work with WindowStores

["John Roesler (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-10200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Roesler updated KAFKA-10200:
---------------------------------
    Fix Version/s: 2.7.0

> MockProcessorContext doesn't work with WindowStores
> ---------------------------------------------------
>
>                 Key: KAFKA-10200
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10200
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams, streams-test-utils
>            Reporter: John Roesler
>            Assignee: John Roesler
>            Priority: Major
>             Fix For: 2.7.0
>
>
> The recommended pattern for testing custom Processor implementations is to use the test-utils MockProcessorContext. If a Processor implementation needs a store, the store also has to be initialized with the same context. However, the existing (in-memory and persistent) Windowed store implementations perform internal casts that result in class cast exceptions if you attempt to initialize them with the MockProcessorContext.
> A workaround is to instead embed the processor in an application and use the TopologyTestDriver instead.



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