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Posted to issues@spark.apache.org by "bluejoe (JIRA)" <ji...@apache.org> on 2017/09/17 13:45:00 UTC
[jira] [Comment Edited] (SPARK-22045) creating and starting a
NetCat in test case programmatically
[ https://issues.apache.org/jira/browse/SPARK-22045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16169302#comment-16169302 ]
bluejoe edited comment on SPARK-22045 at 9/17/17 1:44 PM:
----------------------------------------------------------
when testing spark streaming like:
{code:java}
val lines = spark.readStream
.format("socket")
.option("host", "localhost")
.option("port", 9999)
.load()
{code}
we have to start netcat in command line first:
{code:java}
$ nc -lk 9999
{code}
also our test program can not get what users imput in the nc shell
so I wrote this MockNetCat class
developers can start a mock NetCat server in test cases and send data to the server (simulating user input text in the nc shell)
was (Author: bluejoe2008):
when testing spark streaming like:
{code:java}
val lines = spark.readStream
.format("socket")
.option("host", "localhost")
.option("port", 9999)
.load()
{code}
we have to start netcat in command line first:
{code:java}
$ nc -lk 9999
{code}
also our test program can not get what users imput in the nc shell
so I wrote this MockNetCat class
developers can start a mock NetCat server and send data to the server (simulating user input text in the nc shell)
> 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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