[ http://issues.apache.org/jira/browse/LUCENE-721?page=all ]
Grant Ingersoll reassigned LUCENE-721:
--------------------------------------
Assignee: Grant Ingersoll (was: Michael Busch)
> Code coverage reports
> ---------------------
>
> Key: LUCENE-721
> URL: http://issues.apache.org/jira/browse/LUCENE-721
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Other
> Reporter: Michael Busch
> Assigned To: Grant Ingersoll
> Priority: Minor
> Attachments: clover.patch, code_coverage.patch, emma_report.zip
>
>
> Hi all,
> We should be able to measure the code coverage of our unit testcases. I
> believe it would be very helpful for the committers, if they could verify
> before committing a patch if it does not reduce the coverage.
> Furthermore people could take a look in the code coverage reports to figure
> out where work needs to be done, i. e. where additional testcases are
> neccessary. It would be nice if we could add a page to the Lucene website
> showing the report, generated by the nightly build. Maybe you could add that
> to your preview page (LUCENE-707), Grant?
> I attach a patch here that uses the tool EMMA to generate the code coverage
> reports. EMMA is a very nice open-source tool released under the CPL (same
> license as junit). The patch adds three targets to common-build.xml:
> - emma-check: verifys if both emma.jar and emma_ant.jar are in the ant
> classpath
> - emma-instrument: instruments the compiled code
> - generate-emma-report: generates an html code coverage report
> The following steps are neccessary in order to generate a code coverage
> report:
> - add emma.jar and emma_ant.jar to your ant classpath (download emma from
> http://emma.sourceforge.net/)
> - execute ant target 'emma-instrument' (depends on compile-test, so it will
> compile all core and test classes)
> - execute ant target 'test' to run the unit tests
> - execute ant target 'generate-emma-report'
> To view the emma report open build/test/emma/index.html
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