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

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

bluejoe created SPARK-22045:
-------------------------------

             Summary: 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


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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