[ http://issues.apache.org/jira/browse/LUCENE-721?page=all ]
Michael Busch updated LUCENE-721:
---------------------------------
Attachment: clover.patch
Here it is, Grant. This new patch uses Clover to generate code coverage
reports. Simply add clover.jar to the ant classpath, do a "clean" and run the
target "test". During compiling Clover will automatically instrument all
classes under src/java.
After the junit tests are done, execute the new target
"generate-clover-reports". Clover will generate the html report in
build/test/clover/reports.
Note: If clover.jar can not be found in the ant classpath then "test" will
simply print an info message, saying that code coverage reports are disabled,
and exeute the junit tests like it did before this patch.
> 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: Michael Busch
> 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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