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<html>
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<head>
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<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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<title>JUnitLauncher Task</title>
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</head>
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<body>
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<h2 id="junitlauncher">JUnitLauncher</h2>
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<h3>Description</h3>
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<p>
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This task allows tests to be launched and run using the JUnit 5 framework.
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</p>
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<p>
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JUnit 5 introduced a newer set of APIs to write and launch tests. It also introduced the concept
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of test engines. Test engines decide which classes are considered as testcases and how they are
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executed. JUnit 5 supports running tests that have been written using JUnit 4 constructs as well
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as tests that have been written using JUnit 5 constructs. For more details about JUnit 5
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itself, please refer to the JUnit 5 project's documentation
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at <a href="https://junit.org/junit5/">https://junit.org/junit5/</a>.
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</p>
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<p>
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The goal of this <code>junitlauncher</code> task is to allow launching the JUnit 5 test launcher
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and building the test requests so that the selected tests can then be parsed and executed by the
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test engine(s) supported by JUnit 5. This task in itself does <i>not</i> understand what a test
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case is nor does it execute the tests itself.
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</p>
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<p>
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<strong>Note</strong>: This task depends on external libraries not included in the Apache Ant
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distribution. See <a href="../install.html#librarydependencies">Library Dependencies</a> for
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more information.
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</p>
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<p>
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<strong>Note</strong>: You must have the necessary JUnit 5 libraries in the classpath of the
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tests. At the time of writing this documentation, the list of JUnit 5 platform libraries that
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are necessary to run the tests are:
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</p>
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<ul>
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<li>
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<samp>junit-platform-commons.jar</samp>
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</li>
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<li>
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<samp>junit-platform-engine.jar</samp>
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</li>
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<li>
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<samp>junit-platform-launcher.jar</samp>
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</li>
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</ul>
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<p>
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Depending on the test engine(s) that you want to use in your tests, you will further need the
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following libraries in the classpath
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</p>
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<p>
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For <q>junit-vintage</q> engine:
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</p>
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<ul>
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<li>
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<samp>junit-vintage-engine.jar</samp>
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</li>
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<li>
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<samp>junit.jar</samp> (JUnit 4.x version)
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</li>
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</ul>
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<p>
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For <q>junit-jupiter</q> engine:
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</p>
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<ul>
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<li>
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<samp>junit-jupiter-api.jar</samp>
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</li>
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<li>
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<samp>junit-jupiter-engine.jar</samp>
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</li>
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<li>
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<samp>opentest4j.jar</samp>
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</li>
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</ul>
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<p>
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To have these in the test classpath, you can follow <em>either</em> of the following approaches:
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</p>
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<ul>
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<li>Put all these relevant jars along with the <samp>ant-junitlauncher.jar</samp>
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in <samp>ANT_HOME/lib</samp> directory</li>
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<li>OR Leave <samp>ant-junitlauncher.jar</samp> in the <samp>ANT_HOME/lib</samp> directory and
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include all other relevant jars in the classpath by passing them as a <kbd>-lib</kbd>
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option, while invoking Ant</li>
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</ul>
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<p>
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Tests are defined by nested elements like <code>test</code>, <code>testclasses</code> tags
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(see <a href="#nested">nested elements</a>).
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</p>
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<h3>Parameters</h3>
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<table class="attr">
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<tr>
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<th>Attribute</th>
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<th>Description</th>
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<th>Required</th>
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</tr>
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<tr>
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<td>haltOnFailure</td>
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<td>A value of <q>true</q> implies that build has to stop if any failure occurs in any of
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the tests. JUnit 4+ classifies failures as both assertion failures as well as exceptions
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that get thrown during test execution. As such, this task too considers both these cases
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as failures and doesn't distinguish one from another.
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</td>
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<td>No; default is <q>false</q></td>
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</tr>
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<tr>
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<td>failureProperty</td>
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<td>The name of a property to set in the event of a failure
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(exceptions in tests are considered failures as well).
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</td>
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<td>No</td>
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</tr>
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</table>
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<h3 id="nested">Nested Elements</h3>
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<h4>classpath</h4>
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<p>
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The nested <code><classpath></code> element that represents
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a <a href="../using.html#path">PATH like structure</a> can be used to configure the task to use
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this classpath for finding and running the tests. This classpath will be used for:
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</p>
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<ul>
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<li>Finding the test classes to execute</li>
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</ul>
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<p>
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If the <code>classpath</code> element isn't configured for the task, then the classpath of Ant
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itself will be used for finding the test classes.
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</p>
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<h4>listener</h4>
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<p>
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The <code>junitlauncher</code> task can be configured with <code>listener</code>(s) to listen to
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test execution events (such as a test execution starting, completing etc...). The listener is
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expected to be a class which implements
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the <code class="code">org.junit.platform.launcher.TestExecutionListener</code>.
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This <code class="code">TestExecutionListener</code> interface is an API exposed by the JUnit 5
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platform APIs and isn't specific to Ant. As such, you can use any existing implementation
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of <code class="code">TestExecutionListener</code> in this task.
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</p>
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<h5>Test result formatter</h5>
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<p>
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<code>junitlauncher</code> provides a way where the test execution results can be formatted and
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presented in a way that's customizable. The task allows for configuring test result formatters,
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through the use of <code>listener</code> element. As noted previously, the <code>listener</code>
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element expects the listener to implement
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the <code class="code">org.junit.platform.launcher.TestExecutionListener</code>
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interface. Typically, result formatters need a bit more configuration details to be fed to them,
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during the test execution—details like where to write out the formatted result. Any such
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listener can optionally implement
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the <code class="code">org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
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interface. This interface is specific to Ant <code>junitlauncher</code> task and it extends
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the <code class="code">org.junit.platform.launcher.TestExecutionListener</code> interface
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</p>
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<p>
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The <code>junitlauncher</code> task comes with the following pre-defined test result formatter
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types:
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</p>
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<ul>
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<li>
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<q>legacy-plain</q> : This formatter prints a short statistics line for all test
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cases.
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</li>
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<li>
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<q>legacy-brief</q> : This formatter prints information for tests that failed or were
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skipped.
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</li>
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<li>
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<q>legacy-xml</q> : This formatter prints statistics for the tests in XML format.
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</li>
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</ul>
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<p>
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<strong>Note</strong>: Each of these formatters named <q>legacy</q> try to format the results
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similar to what the <code>junit</code> task's formatters used to do. Furthermore,
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the <q>legacy-xml</q> formatter generates the XML to comply with the same schema that
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the <code>junit</code> task's XML formatter used to follow. As a result, the XML generated by
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this formatter, can be used as-is by the <code>junitreport</code> task.
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</p>
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<p>
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The <code>listener</code> element supports the following attributes:
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</p>
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<table class="attr">
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<tr>
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<th>Attribute</th>
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<th>Description</th>
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<th>Required</th>
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</tr>
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<tr>
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<td>type</td>
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<td>Use a predefined formatter (either <q>legacy-xml</q>, <q>legacy-plain</q>
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or <q>legacy-brief</q>).</td>
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<td rowspan="2">Exactly one of these</td>
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</tr>
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<tr>
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<td>classname</td>
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<td class="left">Name of a listener class which
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implements <code>org.junit.platform.launcher.TestExecutionListener</code> or
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the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
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interface
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</td>
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</tr>
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<tr>
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<td>resultFile</td>
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<td>
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The file name to which the formatted result needs to be written to. This attribute is
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only relevant when the listener class implements
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the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
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interface.
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<p>
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If no value is specified for this attribute and the listener implements
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the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
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then the file name will be defaulted to and will be of the
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form <code>TEST-<i>testname</i>.<i>formatter-specific-extension</i></code>
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(ex: <samp>TEST-org.myapp.SomeTest.xml</samp> for the <q>legacy-xml</q> type
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formatter)
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</p>
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</td>
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<td>No</td>
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</tr>
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<tr>
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<td>sendSysOut</td>
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<td>If set to <q>true</q> then the listener will be passed the <code>stdout</code> content
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generated by the test(s). This attribute is relevant only if the listener class
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implements
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the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
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interface.</td>
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<td>No; defaults to <q>false</q></td>
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</tr>
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<tr>
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<td>sendSysErr</td>
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<td>If set to <q>true</q> then the listener will be passed the <code>stderr</code> content
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generated by the test(s). This attribute is relevant only if the listener class
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implements
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the <code>org.apache.tools.ant.taskdefs.optional.junitlauncher.TestResultFormatter</code>
|
|
|
|
|
interface.</td>
|
|
|
|
|
<td>No; defaults to <q>false</q></td>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
|
|
|
|
|
<h4>test</h4>
|
|
|
|
|
|
|
|
|
|
<p>Defines a single test class.</p>
|
|
|
|
|
|
2018-03-17 14:41:00 +01:00
|
|
|
<table class="attr">
|
2017-12-13 19:07:41 +05:30
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<th>Attribute</th>
|
|
|
|
|
<th>Description</th>
|
|
|
|
|
<th>Required</th>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<td>name</td>
|
|
|
|
|
<td>Fully qualified name of the test class.</td>
|
|
|
|
|
<td>Yes</td>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<td>outputDir</td>
|
|
|
|
|
<td>Directory to write the reports to.</td>
|
|
|
|
|
<td>No; default is the base directory of the project.</td>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</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>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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.
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
2018-03-17 14:41:00 +01:00
|
|
|
<table class="attr">
|
2017-12-13 19:07:41 +05:30
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<th>Attribute</th>
|
|
|
|
|
<th>Description</th>
|
|
|
|
|
<th>Required</th>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<td>outputDir</td>
|
|
|
|
|
<td>Directory to write the reports to.</td>
|
|
|
|
|
<td>No; default is the base directory of the project.</td>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
<tr>
|
2018-03-17 14:41:00 +01:00
|
|
|
<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>
|
2017-12-13 19:07:41 +05:30
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
|
|
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
<code>testclasses</code> can define their own listeners via nested <code>listener</code>
|
|
|
|
|
elements.
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<h3>Examples</h3>
|
|
|
|
|
|
|
|
|
|
<pre>
|
|
|
|
|
<path id="test.classpath">
|
|
|
|
|
...
|
|
|
|
|
</path>
|
|
|
|
|
|
|
|
|
|
<junitlauncher>
|
|
|
|
|
<classpath refid="test.classpath"/>
|
|
|
|
|
<test name="org.myapp.SimpleTest"/>
|
2018-03-17 14:41:00 +01:00
|
|
|
</junitlauncher></pre>
|
2017-12-13 19:07:41 +05:30
|
|
|
|
|
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
Launches the JUnit 5 platform to run the <samp>org.myapp.SimpleTest</samp> test
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre>
|
|
|
|
|
<junitlauncher>
|
|
|
|
|
<classpath refid="test.classpath"/>
|
|
|
|
|
<test name="org.myapp.SimpleTest" haltOnFailure="true"/>
|
|
|
|
|
<test name="org.myapp.AnotherTest"/>
|
|
|
|
|
</junitlauncher>
|
|
|
|
|
</pre>
|
|
|
|
|
|
|
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
Launches 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.
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre>
|
|
|
|
|
<junitlauncher>
|
|
|
|
|
<classpath refid="test.classpath"/>
|
|
|
|
|
<test name="org.myapp.SimpleTest" methods="testFoo, testBar"/>
|
2018-03-17 14:41:00 +01:00
|
|
|
</junitlauncher></pre>
|
|
|
|
|
|
2017-12-13 19:07:41 +05:30
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
Launches 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.
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre>
|
|
|
|
|
<junitlauncher>
|
|
|
|
|
<classpath refid="test.classpath"/>
|
|
|
|
|
|
|
|
|
|
<testclasses outputdir="${output.dir}">
|
|
|
|
|
<fileset dir="${build.classes.dir}">
|
|
|
|
|
<include name="org/example/**/tests/**/"/>
|
|
|
|
|
</fileset>
|
|
|
|
|
</testclasses>
|
2018-03-17 14:41:00 +01:00
|
|
|
</junitlauncher></pre>
|
2017-12-13 19:07:41 +05:30
|
|
|
|
|
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
Selects any <samp>.class</samp> files that match
|
|
|
|
|
the <samp>org/example/**/tests/**/</samp> <code>fileset</code> filter, under
|
|
|
|
|
the <samp>${build.classes.dir}</samp> and passes those classes to the JUnit 5 platform for
|
2017-12-13 19:07:41 +05:30
|
|
|
execution as tests.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre>
|
|
|
|
|
<junitlauncher>
|
|
|
|
|
<classpath refid="test.classpath"/>
|
|
|
|
|
|
|
|
|
|
<testclasses outputdir="${output.dir}">
|
|
|
|
|
<fileset dir="${build.classes.dir}">
|
|
|
|
|
<include name="org/example/**/tests/**/"/>
|
|
|
|
|
</fileset>
|
|
|
|
|
<listener type="legacy-xml" sendSysOut="true" sendSysErr="true"/>
|
|
|
|
|
<listener type="legacy-plain" sendSysOut="true" />
|
|
|
|
|
</testclasses>
|
2018-03-17 14:41:00 +01:00
|
|
|
</junitlauncher></pre>
|
2017-12-13 19:07:41 +05:30
|
|
|
<p>
|
2018-03-17 14:41:00 +01:00
|
|
|
Selects any <samp>.class</samp> files that match
|
|
|
|
|
the <samp>org/example/**/tests/**/</samp> <code>fileset</code> filter, under
|
|
|
|
|
the <samp>${build.classes.dir}</samp> and passes those classes to the JUnit 5 platform for
|
|
|
|
|
execution as tests. 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.
|
2017-12-13 19:07:41 +05:30
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
