<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<html>
<head>
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>JUnitLauncher Task</title>
</head>
<body>
<h2 id="junitlauncher">JUnitLauncher</h2>
<h3>Description</h3>
<p>
This task allows tests to be launched and run using the JUnit 5 framework.
</p>
<p>
JUnit 5 introduced a newer set of APIs to write and launch tests. It also introduced the concept
of test engines. Test engines decide which classes are considered as testcases and how they are
executed. JUnit 5 supports running tests that have been written using JUnit 4 constructs as well
as tests that have been written using JUnit 5 constructs. For more details about JUnit 5
itself, please refer to the JUnit 5 project's documentation
at <a href="https://junit.org/junit5/">https://junit.org/junit5/</a>.
</p>
<p>
The goal of this <code>junitlauncher</code> task is to allow launching the JUnit 5 test launcher
and building the test requests so that the selected tests can then be parsed and executed by the
test engine(s) supported by JUnit 5. This task in itself does <i>not</i> understand what a test
case is nor does it execute the tests itself.
</p>
<p>
<strong>Note</strong>: This task depends on external libraries not included in the Apache Ant
distribution. See <a href="../install.html#librarydependencies">Library Dependencies</a> for
more information.
</p>
<p>
<strong>Note</strong>: You must have the necessary JUnit 5 libraries in the classpath of the
tests. At the time of writing this documentation, the list of JUnit 5 platform libraries that
are necessary to run the tests are:
</p>
<ul id="junit-platform-libraries">
<li>
<samp>junit-platform-commons.jar</samp>
</li>
<li>
<samp>junit-platform-engine.jar</samp>
</li>
<li>
<samp>junit-platform-launcher.jar</samp>
</li>
<li>
<samp>opentest4j.jar</samp>
</li>
</ul>
<p>
Depending on the test engine(s) that you want to use in your tests, you will further need the
following libraries in the classpath
</p>
<p id="junit-vintage-engine-libraries">
For <q>junit-vintage</q> engine:
</p>
<ul>
<li>
<samp>junit-vintage-engine.jar</samp>
</li>
<li>
<samp>junit.jar</samp> (JUnit 4.x version)
</li>
</ul>
<p id="junit-jupiter-engine-libraries">
For <q>junit-jupiter</q> engine:
</p>
<ul>
<li>
<samp>junit-jupiter-api.jar</samp>
</li>
<li>
<samp>junit-jupiter-engine.jar</samp>
</li>
</ul>
<p>
To have these in the test classpath, you can follow <em>either</em> of the following approaches:
</p>
<ul>
<li>Put all these relevant jars along with the <samp>ant-junitlauncher.jar</samp>
in <samp>ANT_HOME/lib</samp> directory</li>
<li>OR Leave <samp>ant-junitlauncher.jar</samp> in the <samp>ANT_HOME/lib</samp> directory and
include all other relevant jars in the classpath by passing them as a <kbd>-lib</kbd>
option, while invoking Ant</li>
<li>OR Use the nested <code><classpath></code> element to specify the location of the
test engines. For more details about this approach, please read the
<a href=#test-engine-in-classpath>using classpath element to include test engines</a> section.
</ul>
<p>
Tests are defined by nested elements like <code>test</code>, <code>testclasses</code> tags
(see <a href="#nested">nested elements</a>).
</p>
<h3>Parameters</h3>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>haltOnFailure</td>
<td>A value of <q>true</q> implies that build has to stop if any failure occurs in any of
the tests. JUnit 4+ classifies failures as both assertion failures as well as exceptions
that get thrown during test execution. As such, this task too considers both these cases
as failures and doesn't distinguish one from another.
</td>
<td>No; default is <q>false</q></td>
</tr>
<tr>
<td>failureProperty</td>
<td>The name of a property to set in the event of a failure
(exceptions in tests are considered failures as well).
</td>
<td>No</td>
</tr>
<tr>
<td>printSummary</td>
<td>If the value is set to <code>true</code> then this task, upon completion of the test execution,
prints the summary of the execution to <code>System.out</code>. The summary itself is generated
by the JUnit 5 platform and not by this task.
</td>
<td>No; defaults to <code>false</code></td>
</tr>
</table>
<h3 id="nested">Nested Elements</h3>
<h4>classpath</h4>
<p>
The nested <code><classpath></code> element that represents
a <a href="../using.html#path">PATH like structure</a> can be used to configure the task to use
this classpath for finding and running the tests. This classpath will be used for:
</p>
<ul>
<li>Finding the test classes to execute</li>
<li>Finding test engines that run the tests</li>
</ul>
<p>
If the <code>classpath</code> element isn't configured for the task, then the classpath of Ant
itself will be used for finding the test classes.
</p>
<h5 id="test-engine-in-classpath">Using the classpath element to include test engines</h5>
<p>
The <code><classpath></code> can be used to include the test engines that you want to be
considered for execution of the tests.
</p>
<p>
<strong>NOTE:</strong> An important aspect to remember is that
whether or not you use this approach, the JUnit 5 platform libraries
<a href="#junit-platform-libraries">listed earlier in this
document</a> and the <code>ant-junitlauncher.jar</code>, <i>shouldn't</i> be part of this classpath
and instead they must be included in Ant runtime's classpath either by placing them
in <code>ANT_HOME/lib</code> or by passing the <code>-lib</code> option.
</p>
<p>
Below is an example of setting up the classpath to include the Jupiter test engine during the
execution of the tests. We assume that the JUnit 5 platform libraries and the
<code>ant-junitlauncher.jar</code> have been setup as explained previously.
<br/>
<pre>
<project>
<property name="output.dir" value="${basedir}/build"/>
<property name="src.test.dir" value="${basedir}/src/test"/>
<property name="build.classes.dir" value="${output.dir}/classes"/>
<target name="init">
<mkdir dir="${output.dir}"/>
</target>
<path id="junit.engine.jupiter.classpath">
<fileset dir="${basedir}/src/lib/jupiter/"/>
</path>
<target name="compile-test" depends="init">
<mkdir dir="${build.classes.dir}"/>
<javac srcdir="${src.test.dir}"
destdir="${build.classes.dir}">
<classpath refid="junit.engine.jupiter.classpath"/>
</javac>
</target>
<target name="test" depends="compile-test">
<junitlauncher>
<classpath refid="junit.engine.jupiter.classpath"/>
<classpath>
<pathelement location="${build.classes.dir}"/>
</classpath>
<testclasses outputdir="${output.dir}">
<fileset dir="${build.classes.dir}"/>
<listener type="legacy-brief" sendSysOut="true"/>
<listener type="legacy-xml" sendSysErr="true" sendSysOut="true"/>
</testclasses>
</junitlauncher>
</target>
</project>
</pre>
In the example above, the <code>src/lib/jupiter</code> directory is expected to contain
the Jupiter test engine related jars (which have been
<a href="#junit-jupiter-engine-libraries">listed in an earlier section of this
document</a>). In the <code>test</code> target we use the <code>classpath</code> nested element
to point to the <code>junit.engine.jupiter.classpath</code> containing those jars. In this
<code>test</code> target we also use another <code>classpath</code> element to point to
the location containing our test classes. If required, both these classpath can be combined
into one.
</p>
<h4>listener</h4>
<p>
The <code>junitlauncher</code> task can be configured with <code>listener</code>(s) to listen to
test execution events (such as a test execution starting, completing etc...). The listener is
expected to be a class which implements
the <code class="code">org.junit.platform.launcher.TestExecutionListener</code>.
This <code class="code">TestExecutionListener</code> interface is an API exposed by the JUnit 5
platform APIs and isn't specific to Ant. As such, you can use any existing implementation
of <code class="code">TestExecutionListener</code> in this task.
</p>
<h5>Test result formatter</h5>
<p>
<code>junitlauncher</code> provides a way where the test execution results can be formatted and
presented in a way that's customizable. The task allows for configuring test result formatters,
through the use of <code>listener</code> element. As noted previously, the <code>listener</code>
element expects the listener to implement
the <code class="code">org.junit.platform.launcher.TestExecutionListener</code>
interface. Typically, result formatters need a bit more configuration details to be fed to them,
during the test execution—details like where to write out the formatted result. Any such
listener can optionally implement
the <code class="code">org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
interface. This interface is specific to Ant <code>junitlauncher</code> task and it extends
the <code class="code">org.junit.platform.launcher.TestExecutionListener</code> interface
</p>
<p>
The <code>junitlauncher</code> task comes with the following pre-defined test result formatter
types:
</p>
<ul>
<li>
<q>legacy-plain</q> : This formatter prints a short statistics line for all test
cases.
</li>
<li>
<q>legacy-brief</q> : This formatter prints information for tests that failed or were
skipped.
</li>
<li>
<q>legacy-xml</q> : This formatter prints statistics for the tests in XML format.
</li>
</ul>
<p>
<strong>Note</strong>: Each of these formatters named <q>legacy</q> try to format the results
similar to what the <code>junit</code> task's formatters used to do. Furthermore,
the <q>legacy-xml</q> formatter generates the XML to comply with the same schema that
the <code>junit</code> task's XML formatter used to follow. As a result, the XML generated by
this formatter, can be used as-is by the <code>junitreport</code> task.
</p>
<p>
The <code>listener</code> element supports the following attributes:
</p>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>type</td>
<td>Use a predefined formatter (either <q>legacy-xml</q>, <q>legacy-plain</q>
or <q>legacy-brief</q>).</td>
<td rowspan="2">Exactly one of these</td>
</tr>
<tr>
<td>classname</td>
<td class="left">Name of a listener class which
implements <code>org.junit.platform.launcher.TestExecutionListener</code> or
the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
interface
</td>
</tr>
<tr>
<td>resultFile</td>
<td>
The file name to which the formatted result needs to be written to. This attribute is
only relevant when the listener class implements
the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
interface.
<p>
If no value is specified for this attribute and the listener implements
the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
then the file name will be defaulted to and will be of the
form <code>TEST-<i>testname</i>.<i>formatter-specific-extension</i></code>
(ex: <samp>TEST-org.myapp.SomeTest.xml</samp> for the <q>legacy-xml</q> type
formatter)
</p>
</td>
<td>No</td>
</tr>
<tr>
<td>sendSysOut</td>
<td>If set to <q>true</q> then the listener will be passed the <code>stdout</code> content
generated by the test(s). This attribute is relevant only if the listener class
implements
the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
interface.</td>
<td>No; defaults to <q>false</q></td>
</tr>
<tr>
<td>sendSysErr</td>
<td>If set to <q>true</q> then the listener will be passed the <code>stderr</code> content
generated by the test(s). This attribute is relevant only if the listener class
implements
the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
interface.</td>
<td>No; defaults to <q>false</q></td>
</tr>
<tr>
<td>if</td>
<td>Only use this listener <a href="../properties.html#if+unless">if the named property is
set</a>.</td>
<td>No</td>
</tr>
<tr>
<td>unless</td>
<td>Only use this listener <a href="../properties.html#if+unless">if the named property
is <strong>not</strong> set</a>.</td>
<td>No</td>
</tr>
</table>
<h4>test</h4>
<p>Defines a single test class.</p>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>name</td>
<td>Fully qualified name of the test class.</td>
<td>Yes</td>
</tr>
<tr>
<td>methods</td>
<td>Comma-separated list of names of test case methods to execute. If this is specified,
then only these test methods from the test class will be executed.</td>
<td>No</td>
</tr>
<tr>
<td>haltOnFailure</td>
<td>Stop the build process if a failure occurs during the test run (exceptions are
considered as failures too). Overrides value set on <code>junitlauncher</code>
element.</td>
<td>No</td>
</tr>
<tr>
<td>failureProperty</td>
<td>The name of a property to set in the event of a failure (exceptions are considered
failures as well). Overrides value set on <code>junitlauncher</code> element.</td>
<td>No</td>
</tr>
<tr>
<td>outputDir</td>
<td>Directory to write the reports to.</td>
<td>No; default is the base directory of the project.</td>
</tr>
<tr>
<td>if</td>
<td>Only run this test <a href="../properties.html#if+unless">if the named property is
set</a>.</td>
<td>No</td>
</tr>
<tr>
<td>unless</td>
<td>Only run this test <a href="../properties.html#if+unless">if the named property
is <strong>not</strong> set</a>.</td>
<td>No</td>
</tr>
<tr>
<td>includeEngines</td>
<td>A comma separated set of test engine ids. If specified, only these test engine(s)
will be used for running the tests.
<br/>
For example: <code>includeEngines="junit-jupiter"</code> will only use the Jupiter
test engine for execution of the tests and will ignore any other engines that might
have been found in the classpath.
</td>
<td>No</td>
</tr>
<tr>
<td>excludeEngines</td>
<td>A comma separated set of test engine ids. If specified, these test engine(s)
will be excluded when running the tests.
<br/>
For example: <code>excludeEngines="junit-vintage"</code> will exclude the vintage
test engine during execution of the tests and will use any other engines that might
have been found in the classpath.
</td>
<td>No</td>
</tr>
</table>
<p>
Tests can define their own listeners via nested <code>listener</code> elements.
</p>
<h4>testclasses</h4>
<p>Define a number of tests based on pattern matching.</p>
<p>
<code>testclasses</code> collects the included <a href="../Types/resources.html">resources</a>
from any number of nested <a href="../Types/resources.html#collection">Resource
Collection</a>s. It then selects each resource whose name ends in <code>.class</code>. These
classes are then passed on to the JUnit 5 platform for it to decide and run them as tests.
</p>
<table class="attr">
<tr>
<th scope="col">Attribute</th>
<th scope="col">Description</th>
<th scope="col">Required</th>
</tr>
<tr>
<td>haltOnFailure</td>
<td>Stop the build process if a failure occurs during the test run (exceptions are
considered as failures too). Overrides value set on <code>junitlauncher</code>
element.</td>
<td>No</td>
</tr>
<tr>
<td>failureProperty</td>
<td>The name of a property to set in the event of a failure (exceptions are considered
failures as well). Overrides value set on <code>junitlauncher</code> element.</td>
<td>No</td>
</tr>
<tr>
<td>outputDir</td>
<td>Directory to write the reports to.</td>
<td>No; default is the base directory of the project.</td>
</tr>
<tr>
<td>if</td>
<td>Only run the tests <a href="../properties.html#if+unless">if the named property is
set</a>.</td>
<td>No</td>
</tr>
<tr>
<td>unless</td>
<td>Only run the tests <a href="../properties.html#if+unless">if the named property
is <strong>not</strong> set</a>.</td>
<td>No</td>
</tr>
<tr>
<td>includeEngines</td>
<td>A comma separated set of test engine ids. If specified, only these test engine(s)
will be used for running the tests.
<br/>
For example: <code>includeEngines="junit-jupiter"</code> will only use the Jupiter
test engine for execution of the tests and will ignore any other engines that might
have been found in the classpath.
</td>
<td>No</td>
</tr>
<tr>
<td>excludeEngines</td>
<td>A comma separated set of test engine ids. If specified, these test engine(s)
will be excluded when running the tests.
<br/>
For example: <code>excludeEngines="junit-vintage"</code> will exclude the vintage
test engine during execution of the tests and will use any other engines that might
have been found in the classpath.
</td>
<td>No</td>
</tr>
</table>
<p>
<code>testclasses</code> can define their own listeners via nested <code>listener</code>
elements.
</p>
<h3>Examples</h3>
<p>
Launch the JUnit 5 platform to run the <samp>org.myapp.SimpleTest</samp> test
</p>
<pre>
<path id="test.classpath">
...
</path>
<junitlauncher>
<classpath refid="test.classpath"/>
<test name="org.myapp.SimpleTest"/>
</junitlauncher></pre>
<p>
Launch the JUnit 5 platform to run the <samp>org.myapp.SimpleTest</samp> and
the <samp>org.myapp.AnotherTest</samp> tests. The build process will be stopped if any test, in
the <samp>org.myapp.SimpleTest</samp>, fails.
</p>
<pre>
<junitlauncher>
<classpath refid="test.classpath"/>
<test name="org.myapp.SimpleTest" haltOnFailure="true"/>
<test name="org.myapp.AnotherTest"/>
</junitlauncher>
</pre>
<p>
Launch the JUnit 5 platform to run only the <samp>testFoo</samp> and <samp>testBar</samp>
methods of the <samp>org.myapp.SimpleTest</samp> test class.
</p>
<pre>
<junitlauncher>
<classpath refid="test.classpath"/>
<test name="org.myapp.SimpleTest" methods="testFoo, testBar"/>
</junitlauncher></pre>
<p>
Select any <samp>.class</samp> files that match
the <samp>org/example/**/tests/**/</samp> <code>fileset</code> filter, under
the <samp>${build.classes.dir}</samp> and passes those classes to the JUnit 5 platform for
execution as tests.
</p>
<pre>
<junitlauncher>
<classpath refid="test.classpath"/>
<testclasses outputdir="${output.dir}">
<fileset dir="${build.classes.dir}">
<include name="org/example/**/tests/**/"/>
</fileset>
</testclasses>
</junitlauncher></pre>
<p>
Select any <samp>.class</samp> files that match
the <samp>org/example/**/tests/**/</samp> <code>fileset</code> filter, under
the <samp>${build.classes.dir}</samp> and pass those classes to the JUnit 5 platform for
execution as tests. Test results will be written out to the <samp>${output.dir}</samp> by
the <q>legacy-xml</q> and <q>legacy-plain</q> formatters, in separate files. Furthermore, both
the <q>legacy-xml</q> and the <q>legacy-plain</q> listeners, above, are configured to receive
the standard output content generated by the tests. The <q>legacy-xml</q> listener is configured
to receive standard error content as well.
</p>
<pre>
<junitlauncher>
<classpath refid="test.classpath"/>
<testclasses outputdir="${output.dir}">
<fileset dir="${build.classes.dir}">
<include name="org/example/**/tests/**/"/>
</fileset>
<listener type="legacy-xml" sendSysOut="true" sendSysErr="true"/>
<listener type="legacy-plain" sendSysOut="true" />
</testclasses>
</junitlauncher></pre>
</body>
</html>
distrib
>
Mageia
>
7
>
i586
>
media
>
core-release
>
by-pkgid
>
11cecbe09b895512c1d683b8366fd862
>
files
>
86
