Converting test reports to JUnit format

Dealing with custom test report format

Launchable uses the so-called JUnit report format in the launchable record tests command. This is the de facto test report format that is supported by many build/test/CI tools. However, if yours does not, we need you to write a little program to convert your formats into the JUnit report format.

This page and this page are probably the best annotated examples of the JUnit report format. Launchable only looks at the following information:

Must have

  • <testsuites>, <testsuite>, <testcase> are the structural elements that matter. Their name, classname attributes are used to identify test names

  • For a failed/errored/skipped test case, <testcase> element must have nested <failure>, <error>, or <skipped> child element

  • While not documented in the referenced pages, file or filepath attributes on structural elements that point to the test source file path are a must for file-based test runner support, most notably the file mode, which is most likely what you will use

  • time attribute on structural elements that indicates how long a test took to run (in seconds)

Nice to have

  • <system-out>, <system-err> that captures output from tests, preferably at the level of <testcase>

  • timestamp attribute on structural elements that indicate when a test has run, preferrably on <testcase>


Here's bare-bone example of a test report that works with Launchable:

<?xml version="1.0" encoding="UTF-8"?>
<testsuite time='0.050425' name="UserTest" timestamp="2020-11-18T19:22:24+09:00">
<testcase time='0.025175' file="test/models/user_test.rb" name="test_should_save_user_with_name">
<testcase time='0.025250' file="test/models/user_test.rb" name="test_should_not_save_user_without_name">

Another one from Maven+Java+JUnit. This is not a file based test runner, so :

<?xml version="1.0" encoding="UTF-8"?>
<testsuite name="foo.FooTest" time="0">
<testcase name="foo.FooTest.test3" classname="foo.FooTest" time="0.001">
<failure type="java.lang.RuntimeException">java.lang.RuntimeException
at foo.FooTest.test3(
<testcase name="foo.FooTest.test1" classname="foo.FooTest" time="0.001"/>
<testcase name="foo.FooTest.test2" classname="foo.FooTest" time="0.003"/>