JUnit XML format specification that Hudson supports
I have Hudson as continuous integration server and I want to use option 'Publish JUnit test result report'. But I don't use xUnit tools for testing, instead of that i have shell scripts which run tests and return results in simple format. I am thinking to make a script which transforms these results to the JUnit format. So i'm interesting how the JUnit file must look?
I did a similar thing a few months ago, and it turned out this simple format was enough for Hudson to accept it as a test protocol:
<testsuite tests="3">
<testcase classname="foo1" name="ASuccessfulTest"/>
<testcase classname="foo2" name="AnotherSuccessfulTest"/>
<testcase classname="foo3" name="AFailingTest">
<failure type="NotEnoughFoo"> details about failure </failure>
</testcase>
</testsuite>
This question has answers with more details: Spec. for JUnit XML Output
I just grabbed the junit-4.xsd that others have linked to and used a tool named XMLSpear to convert the schema to a blank XML file with the options shown below. This is the (slightly cleaned up) result:
<?xml version="1.0" encoding="UTF-8"?>
<testsuites disabled="" errors="" failures="" name="" tests="" time="">
<testsuite disabled="" errors="" failures="" hostname="" id=""
name="" package="" skipped="" tests="" time="" timestamp="">
<properties>
<property name="" value=""/>
</properties>
<testcase assertions="" classname="" name="" status="" time="">
<skipped/>
<error message="" type=""/>
<failure message="" type=""/>
<system-out/>
<system-err/>
</testcase>
<system-out/>
<system-err/>
</testsuite>
</testsuites>
Some of these items can occur multiple times:
testsuites element, since that's how XML works, but there can be multiple testsuite elements within the testsuites element. properties element can have multiple property children. testsuite element can have multiple testcase children. testcase element can have multiple error , failure , system-out , or system-err children. 
The top answer of the question Anders Lindahl refers to an xsd file.
Personally I found this xsd file also very useful (I don't remember how I found that one). It looks a bit less intimidating, and as far as I used it, all the elements and attributes seem to be recognized by Jenkins (v1.451)
One thing though: when adding multiple <failure ... elements, only one was retained in Jenkins. When creating the xml file, I now concatenate all the failures in one.
Update 2016-11 The link is broken now. A better alternative is this page from cubic.org: JUnit XML reporting file format, where a nice effort has been taken to provide a sensible documented example. Example and xsd are copied below, but their page looks waay nicer.
sample JUnit XML file
<?xml version="1.0" encoding="UTF-8"?>
<!-- a description of the JUnit XML format and how Jenkins parses it. See also junit.xsd -->
<!-- if only a single testsuite element is present, the testsuites
element can be omitted. All attributes are optional. -->
<testsuites disabled="" <!-- total number of disabled tests from all testsuites. -->
errors="" <!-- total number of tests with error result from all testsuites. -->
failures="" <!-- total number of failed tests from all testsuites. -->
name=""
tests="" <!-- total number of successful tests from all testsuites. -->
time="" <!-- time in seconds to execute all test suites. -->
>
<!-- testsuite can appear multiple times, if contained in a testsuites element.
It can also be the root element. -->
<testsuite name="" <!-- Full (class) name of the test for non-aggregated testsuite documents.
Class name without the package for aggregated testsuites documents. Required -->
tests="" <!-- The total number of tests in the suite, required. -->
disabled="" <!-- the total number of disabled tests in the suite. optional -->
errors="" <!-- The total number of tests in the suite that errored. An errored test is one that had an unanticipated problem,
for example an unchecked throwable; or a problem with the implementation of the test. optional -->
failures="" <!-- The total number of tests in the suite that failed. A failure is a test which the code has explicitly failed
by using the mechanisms for that purpose. e.g., via an assertEquals. optional -->
hostname="" <!-- Host on which the tests were executed. 'localhost' should be used if the hostname cannot be determined. optional -->
id="" <!-- Starts at 0 for the first testsuite and is incremented by 1 for each following testsuite -->
package="" <!-- Derived from testsuite/@name in the non-aggregated documents. optional -->
skipped="" <!-- The total number of skipped tests. optional -->
time="" <!-- Time taken (in seconds) to execute the tests in the suite. optional -->
timestamp="" <!-- when the test was executed in ISO 8601 format (2014-01-21T16:17:18). Timezone may not be specified. optional -->
>
<!-- Properties (e.g., environment settings) set during test
execution. The properties element can appear 0 or once. -->
<properties>
<!-- property can appear multiple times. The name and value attributres are required. -->
<property name="" value=""/>
</properties>
<!-- testcase can appear multiple times, see /testsuites/testsuite@tests -->
<testcase name="" <!-- Name of the test method, required. -->
assertions="" <!-- number of assertions in the test case. optional -->
classname="" <!-- Full class name for the class the test method is in. required -->
status=""
time="" <!-- Time taken (in seconds) to execute the test. optional -->
>
<!-- If the test was not executed or failed, you can specify one
the skipped, error or failure elements. -->
<!-- skipped can appear 0 or once. optional -->
<skipped/>
<!-- Indicates that the test errored. An errored test is one
that had an unanticipated problem. For example an unchecked
throwable or a problem with the implementation of the
test. Contains as a text node relevant data for the error,
for example a stack trace. optional -->
<error message="" <!-- The error message. e.g., if a java exception is thrown, the return value of getMessage() -->
type="" <!-- The type of error that occured. e.g., if a java execption is thrown the full class name of the exception. -->
></error>
<!-- Indicates that the test failed. A failure is a test which
the code has explicitly failed by using the mechanisms for
that purpose. For example via an assertEquals. Contains as
a text node relevant data for the failure, e.g., a stack
trace. optional -->
<failure message="" <!-- The message specified in the assert. -->
type="" <!-- The type of the assert. -->
></failure>
<!-- Data that was written to standard out while the test was executed. optional -->
<system-out></system-out>
<!-- Data that was written to standard error while the test was executed. optional -->
<system-err></system-err>
</testcase>
<!-- Data that was written to standard out while the test suite was executed. optional -->
<system-out></system-out>
<!-- Data that was written to standard error while the test suite was executed. optional -->
<system-err></system-err>
</testsuite>
</testsuites>
JUnit XSD file
<?xml version="1.0" encoding="UTF-8" ?>
<!-- from https://svn.jenkins-ci.org/trunk/hudson/dtkit/dtkit-format/dtkit-junit-model/src/main/resources/com/thalesgroup/dtkit/junit/model/xsd/junit-4.xsd -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="failure">
<xs:complexType mixed="true">
<xs:attribute name="type" type="xs:string" use="optional"/>
<xs:attribute name="message" type="xs:string" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="error">
<xs:complexType mixed="true">
<xs:attribute name="type" type="xs:string" use="optional"/>
<xs:attribute name="message" type="xs:string" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="properties">
<xs:complexType>
<xs:sequence>
<xs:element ref="property" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="property">
<xs:complexType>
<xs:attribute name="name" type="xs:string" use="required"/>
<xs:attribute name="value" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="skipped" type="xs:string"/>
<xs:element name="system-err" type="xs:string"/>
<xs:element name="system-out" type="xs:string"/>
<xs:element name="testcase">
<xs:complexType>
<xs:sequence>
<xs:element ref="skipped" minOccurs="0" maxOccurs="1"/>
<xs:element ref="error" minOccurs="0" maxOccurs="unbounded"/>
<xs:element ref="failure" minOccurs="0" maxOccurs="unbounded"/>
<xs:element ref="system-out" minOccurs="0" maxOccurs="unbounded"/>
<xs:element ref="system-err" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="name" type="xs:string" use="required"/>
<xs:attribute name="assertions" type="xs:string" use="optional"/>
<xs:attribute name="time" type="xs:string" use="optional"/>
<xs:attribute name="classname" type="xs:string" use="optional"/>
<xs:attribute name="status" type="xs:string" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="testsuite">
<xs:complexType>
<xs:sequence>
<xs:element ref="properties" minOccurs="0" maxOccurs="1"/>
<xs:element ref="testcase" minOccurs="0" maxOccurs="unbounded"/>
<xs:element ref="system-out" minOccurs="0" maxOccurs="1"/>
<xs:element ref="system-err" minOccurs="0" maxOccurs="1"/>
</xs:sequence>
<xs:attribute name="name" type="xs:string" use="required"/>
<xs:attribute name="tests" type="xs:string" use="required"/>
<xs:attribute name="failures" type="xs:string" use="optional"/>
<xs:attribute name="errors" type="xs:string" use="optional"/>
<xs:attribute name="time" type="xs:string" use="optional"/>
<xs:attribute name="disabled" type="xs:string" use="optional"/>
<xs:attribute name="skipped" type="xs:string" use="optional"/>
<xs:attribute name="timestamp" type="xs:string" use="optional"/>
<xs:attribute name="hostname" type="xs:string" use="optional"/>
<xs:attribute name="id" type="xs:string" use="optional"/>
<xs:attribute name="package" type="xs:string" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="testsuites">
<xs:complexType>
<xs:sequence>
<xs:element ref="testsuite" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="name" type="xs:string" use="optional"/>
<xs:attribute name="time" type="xs:string" use="optional"/>
<xs:attribute name="tests" type="xs:string" use="optional"/>
<xs:attribute name="failures" type="xs:string" use="optional"/>
<xs:attribute name="disabled" type="xs:string" use="optional"/>
<xs:attribute name="errors" type="xs:string" use="optional"/>
</xs:complexType>
</xs:element>
</xs:schema>
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