GitHub user wangyum opened a pull request:
https://github.com/apache/spark/pull/20001
[SPARK-22762][TEST] Basic tests for PromoteStrings and InConversion
## What changes were proposed in this pull request?
Test Coverage for `PromoteStrings` and `InConversion`, this is a Sub-tasks
for [SPARK-22722](https://issues.apache.org/jira/browse/SPARK-22722).
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangyum/spark SPARK-22816
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20001.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 #20001
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commit 604f16f872f1cf3e008435577d4a4768711c63ed
Author: Yuming Wang <wgy...@gmail.com>
Date: 2017-12-16T12:48:44Z
Basic tests for PromoteStrings and InConversion
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