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junit4OSGi tests can also be executed automatically during the integration-test phase of a maven build process. This page describes the maven-junit4osgi-plugin allowing a seamless maven integration.

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What does the maven-junit4osgi-plugin provide?

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The plug-in sources are available in the iPOJO trunk.
However the junit4osgi and iPOJO runtime are also required. So, download the source of iPOJO:
svn co http://svn.apache.org/repos/asf/felix/trunk/ipojo/^{Image Removed}
To compile it, run the following commands:

Code Block

	xml
	xml

cd ipojo
mvn clean install -Pexamples

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So, first the project using the plug-in is not the project under test. It's another project containing either only integration-test packaged in a bundle, or is empty (and so depends on other bundles containing integration tests).
Tests contained in the project are developed with junit4osgi, and are packaged in a bundle with the maven-bundle-plugin.
In the pom file, add the following plugin configuration to use the maven-junit4osgi-plugin:

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	xml
	xml

<plugin>
<groupid>org.apache.felix</groupid>
<artifactid>maven-junit4osgi-plugin</artifactid>
<executions>
<execution>
<goals>
      <goal>test</goal>
</goals>
<configuration>
<deployprojectartifact>true</deployprojectartifact>
</configuration>
</execution>
</executions>
</plugin>

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The plug-in has only one parameter. The 'deployProjectArtifact' parameter enables or disables the current artifact deployment. If the current project contains tests, the plug-in can deploy the built artifact (as illustrated in this pom). Otherwise, the current project artifact is not deployed. This can be useful if the project just depends on other test bundles and sets the test configuration (as this pom).

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There is two different ways to configure the plug-in to deploy other bundles. If the bundle to deploy is a maven artifact, just add this artifact as a maven project dependency. Here is an example:

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	xml
	xml

<dependency>  
    <artifactid>tests.manipulation.metadata</artifactid>  
    <groupid>ipojo.tests</groupid>  
    <version>1.1.0-SNAPSHOT</version>  
</dependency>

If your bundle is not a maven artifact, you can configure the plugin with the bundle URL (from where the bundle will be deployed)

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	xml
	xml

<configuration>
<deployprojectartifact>true</deployprojectartifact>
<bundles>
<param>file:/Users/clement/bundles/test-metadata.jar</param>
</bundles>
</configuration>

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It is also possible to set Felix properties in the configuration:

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	xml
	xml

<configuration>
    <configuration>
	<org.osgi.http.port>8083</org.osgi.http.port>
    </configuration>
</configuration>

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The plugin collects System.out, System.err and logged messages to write them in the test report. Moreover, the plugin allows hiding traces when tests are executed. To achieve this just add the hideOutputs parameter.

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	xml
	xml

<configuration>
    <hideOutputs>true</hideOutputs>
</configuration>

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The plugin exposed a LogService in the OSGi framework to collects logged messaged. This service enabled by default. You can diable it by launching the plugin with the logService property set to false

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	xml
	xml

mvn clean integration-test -DlogService=false

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Sometimes you want to skip tests . The plugin uses the maven.test.skip property to skip tests such as

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	xml
	xml

mvn clean install -Dmaven.test.skip=true

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If tests throws errors or have failures, the plugin breaks the Maven build. You can by-pass this behavior by ignoring errors and failures. This is useful during test generation.

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	xml
	xml

mvn clean install -Dmaven.test.failure.ignore=true

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To execute test, just launch the mvn clean integration-test command.

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	xml
	xml

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building iPOJO Primitive Manipulation Test Suite
[INFO]    task-segment: [integration-test]
[INFO] ------------------------------------------------------------------------
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] No sources to compile
[INFO] [surefire:test]
[INFO] No tests to run.
[INFO] [bundle:bundle]
[INFO] [ipojo:ipojo-bundle {execution: default}]
[INFO] Start bundle manipulation
[INFO] Metadata file : /Users/clement/Documents/workspaces/felix-trunk/ipojo/tests/manipulator/primitives/target/classes/metadata.xml
[INFO] Input Bundle File : /Users/clement/Documents/workspaces/felix-trunk/ipojo/tests/manipulator/primitives/target/tests.manipulation.primitives-1.1.0-SNAPSHOT.jar
[INFO] Bundle manipulation - SUCCESS
[INFO] [junit4osgi:test {execution: default}]
Analyzing org.apache.felix.ipojo - compile
Analyzing org.apache.felix.ipojo.metadata - compile
Analyzing org.osgi.core - compile
Analyzing junit - compile
Analyzing org.apache.felix.ipojo.junit4osgi - compile
Analyzing tests.manipulation.metadata - test

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Deploy : /Users/clement/Documents/workspaces/felix-trunk/ipojo/tests/manipulator/primitives/target/tests.manipulation.primitives-1.1.0-SNAPSHOT.jar
Loading org.apache.felix.ipojo.test.scenarios.manipulation.ManipulationTestSuite
Loading org.apache.felix.ipojo.test.scenarios.manipulation.ManipulationTestSuite
Junit Extender starting ...
Running Manipulation Metadata Test Suite
Tests run: 16, Failures: 0, Errors: 0, Time elapsed: 0 sec
Running Primitive Manipulation Test Suite
Tests run: 17, Failures: 0, Errors: 0, Time elapsed: 0 sec

Results :

Tests run: 33, Failures: 0, Errors:0

Unload test suites [class org.apache.felix.ipojo.test.scenarios.manipulation.ManipulationTestSuite]
Unload test suites [class org.apache.felix.ipojo.test.scenarios.manipulation.ManipulationTestSuite]
Cleaning test suites ...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6 seconds
[INFO] Finished at: Mon Nov 10 21:30:21 CET 2008
[INFO] Final Memory: 9M/18M
[INFO] ------------------------------------------------------------------------

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When test are executed, the plug-in generates XML reports (int the target/junit4osgi-reports directory) using the same convention as Surefire. So, it is possible to configure Surefire to generate the web page with test results.
To do this, add the following report configuration to the project executing tests:

Code Block

	xml
	xml

<reporting>
<plugins>
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-surefire-report-plugin</artifactid>
<version>2.4.3</version>
<configuration>
<showsuccess>true</showsuccess>
</configuration>
</plugin>
</plugins>
</reporting>

This snippet configures the maven-surefire-report-plugin to collect results from the 'target/surefire-reports' directory.
Then execute the plugin with the following command:

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	none
	none

mvn org.apache.maven.plugins:maven-surefire-report-plugin:2.4.3:report

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An easy integration in a Maven-based build process
A good flexibility allowing reproducing production execution environments to test the application
Test result output is the same as surefire
Is able to generate Surefire-like reports

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What does the maven-junit4osgi-plugin provide?