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https://issues.apache.org/jira/browse/FLINK-7554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16508141#comment-16508141
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ASF GitHub Bot commented on FLINK-7554:
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GitHub user buptljy opened a pull request:
https://github.com/apache/flink/pull/6148
[FLINK-7554][Tests] Add a testing RuntimeContext to test utilities
## What is the purpose of the change
This pull request adds a TestingRuntimeContext to help developers test
their own user-defined functions like CoprocessFunction instead of testing the
whole pipeline.
## Brief change log
- TestingRuntimeContext can be directly used in unit testing of both
dataset functions and datastream functions, including the support of
broadcastVariable, state, accumulator and so on.
- Documents are written in udf_test, including examples of Java and Scala.
## Verifying this change
- This change has already been verified in new unit testing files in test
directory,
org.apache.flink.streaming.api.functions.test.TestingRuntimeContextTest and
org.apache.flink.streaming.api.functions.test.TestingRuntimeContextTest.
## Documentation
- This pull request is a new feature.
- Related documents are written in docs directory.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/buptljy/flink 7554
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/6148.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6148
----
commit 8535b22a7cf1545381bcd7b5febc0d4763f925aa
Author: wind <bupt_ljy@...>
Date: 2018-06-11T12:40:19Z
add TestingRuntimeContext
----
> Add a testing RuntimeContext to test utilities
> ----------------------------------------------
>
> Key: FLINK-7554
> URL: https://issues.apache.org/jira/browse/FLINK-7554
> Project: Flink
> Issue Type: New Feature
> Components: Tests
> Reporter: Timo Walther
> Assignee: buptljy
> Priority: Major
> Labels: starter
>
> When unit testing user-defined functions it would be useful to have an
> official testing {{RuntimeContext}} that uses Java collections for storing
> state, metrics, etc.
> After executing the business logic, the user could then verify how the state
> of the UDF changed or which metrics have been collected.
> This issue includes documentation for the "Testing" section.
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