SonarQube Karma JUnit Reporting

Purpose

This is the SonarQube Karma JUnit Reporting plugin. It was created to facilitate publishing unit test (typescript) reports created using the karma-junit-reporter to SonarQube.

Why Was This Plugin Created?

When using the karma-junit-reporter for a JavaScript project, you end up with a unit test report named something like "TESTS-PhantomJS_1.9.8_(Mac_OS_X_0.0.0).xml".

Looking inside that file, you will see content like:

<?xml version="1.0"?>
<testsuite name="PhantomJS 1.9.8 (Mac OS X 0.0.0)" package="" timestamp="2015-10-05T04:56:44" id="0" hostname="myComputer" tests="58" errors="0" failures="0" time="0.475">
    <properties>
        <property name="browser.fullName" value="Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit/534.34 (KHTML, like Gecko) PhantomJS/1.9.8 Safari/534.34"/>
    </properties>
    <testcase name="should do something cool" time="0.028" classname="PhantomJS_1_9_8_(Mac_OS_X_0_0_0).service.myservice"/>
    ...
    <system-out>
    <![CDATA[
    ]]>
    </system-out>
    <system-err/>
</testsuite>

So, What's The Problem?

The problem lies in the classname that the karma-junit-reporter plugin sets for your testcase. Notice above that the plugin has set the classname to PhantomJS_1_9_8_(Mac_OS_X_0_0_0).service.myservice. The PhantomJS part of the classname is the browser that ran the tests and the rest comes from the name of your test suite. In this example, imagine that we have a unit test file located at service/myservice.spec.ts and that it defines the top-level test suite with describe('service.myservice', function() {. The karma-junit-reporter is basically concatenating the browser name and the test suite name to come up with the classname. Unfortunately, SonarQube cannot use this classname. SonarQube needs that name of the actual unit test file.

Instead of:

<testcase name="should do something cool" time="0.028" classname="PhantomJS_1_9_8_(Mac_OS_X_0_0_0).service.myservice"/>

SonarQube needs something like:

<testcase name="should do something cool" time="0.028" classname="src/app/service/myservice.spec.ts"/>

Basically, we need a way to map the test suite name to the actual unit test file name so that we can report the unit test file report to SonarQube. That is what this plugin does.

How Does This Plugin Work?

The SonarQube Karma JUnit Reporting plugin reads the xml report that was created by the karma-junit-reporter and determines what the real unit test file names are (based off of the testcase classname attribute) and reports them to SonarQube.

Log Output

To troubleshoot or better understand what the SonarQube Karma JUnit Reporting plugin is doing, run Sonar with the debug flag turned on. You will see some debug logging done by the KarmaJunitReporterTsTestDriverSensor.

What Parameters Can Be Set For This Plugin?

• sonar.typescript.karmajstestdriver.reportsPath must be set to a valid value in order for this plugin to take effect.
  • set this configuration instead of sonar.javascript.jstestdriver.reportsPath
• sonar.karma.tests must be set to a valid value in order for this plugin to take effect.
  • set this configuration as addition to sonar.tests