[jira] Commented: (MAPREDUCE-1050) Introduce a mock object testing framework

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

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12761261#action_12761261 ] 

Konstantin Boudnik commented on MAPREDUCE-1050:
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I'm wondering if mock objects would benefit from (or might be expressed by means of) the injection framework we currently have in HDFS (HDFS-435) and will have in big Hadoop (HADOOP-6204) soon?

> Introduce a mock object testing framework
> -----------------------------------------
>
>                 Key: MAPREDUCE-1050
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1050
>             Project: Hadoop Map/Reduce
>          Issue Type: Test
>          Components: test
>            Reporter: Tom White
>            Assignee: Tom White
>
> Using mock objects in unit tests can improve code quality (see e.g. http://www.mockobjects.com/). Hadoop would benefit from having a mock object framework for developers to write unit tests with. Doing so will allow a wider range of failure conditions to be tested and the tests will run faster.

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