[jira] [Commented] (SPARK-22045) creating and starting a NetCat in test case programmatically

["Sean Owen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-22045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16169298#comment-16169298 ] 

Sean Owen commented on SPARK-22045:
-----------------------------------

What is the use of this in Spark?

> creating and starting a NetCat in test case programmatically
> ------------------------------------------------------------
>
>                 Key: SPARK-22045
>                 URL: https://issues.apache.org/jira/browse/SPARK-22045
>             Project: Spark
>          Issue Type: New Feature
>          Components: Tests
>    Affects Versions: 2.2.0
>            Reporter: bluejoe
>              Labels: netcat
>
> hi, all
> I have written a MockNetCat class, which help developers start a netcat programmatically, instead of manually launching 
> {code:java}
> nc -lk 9999
> {code}
>  command for test
> also I completed a MockNetCatTest class, a JUnit 4 test case which test MockNetCat
> use of MockNetCat is very simple, like:
> {code:java}
> var nc: MockNetCat = MockNetCat.start(9999);
> {code}
> this starts a NetCat server, and data can be generated using following code:
> {code:java}
> nc.writeData("hello\r\nworld\r\nbye\r\nworld\r\n");
> {code}



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