Arquillian is a powerful testing platform that allows you to write integration tests for Java applications. When working with a multi-module Maven project, setting up Arquillian can be a bit challenging. In this blog post, we’ll explore how to use Arquillian in a multi-module Maven project.

Step 1: Configure the parent POM

First, we need to configure the parent POM to include the Arquillian dependencies and plugins. Open the parent POM file (pom.xml) and add the following sections:

<dependencies>
    <!-- Add Arquillian dependencies required for testing -->
    <dependency>
        <groupId>org.jboss.arquillian.junit</groupId>
        <artifactId>arquillian-junit-container</artifactId>
        <version>1.5.0.Final</version>
        <scope>test</scope>
    </dependency>
    <!-- Add other dependencies required for testing -->
</dependencies>

<plugins>
    <!-- Configure the Arquillian Maven plugin -->
    <plugin>
        <groupId>org.jboss.arquillian</groupId>
        <artifactId>arquillian-bom</artifactId>
        <version>1.5.0.Final</version>
        <executions>
            <execution>
                <id>build</id>
                <phase>prepare-package</phase>
                <goals>
                    <goal>build</goal>
                </goals>
            </execution>
        </executions>
    </plugin>
    <!-- Add other Maven plugins required for testing -->
</plugins>

Make sure to update the versions to the latest stable releases.

Step 2: Configure the module POMs

Next, we need to configure the POM files for each module in your project. Open the pom.xml file for each module and add the following section:

<build>
    <plugins>
        <!-- Configure the Arquillian Maven plugin for each module -->
        <plugin>
            <groupId>org.jboss.arquillian</groupId>
            <artifactId>arquillian-maven-plugin</artifactId>
            <version>1.5.0.Final</version>
            <configuration>
                <deploymentExportPath>${project.build.directory}</deploymentExportPath>
            </configuration>
        </plugin>
        <!-- Add other Maven plugins required for each module -->
    </plugins>
</build>

Step 3: Write Arquillian tests

Now that the project is configured, you can start writing Arquillian tests. Create a new test class and annotate it with @RunWith(Arquillian.class).

@RunWith(Arquillian.class)
public class MyArquillianTest {

    @Deployment
    public static JavaArchive createDeployment() {
        return ShrinkWrap.create(JavaArchive.class)
                .addClass(MyService.class)
                .addClass(MyData.class)
                .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
    }

    @Inject
    private MyService myService;

    @Test
    public void testMyService() {
        // Test the functionality of MyService
    }
}

In this example, we’ve created a simple Arquillian test that deploys a Java archive containing the classes MyService and MyData. The @Inject annotation is used to inject an instance of MyService into the test.

Conclusion

Using Arquillian in a multi-module Maven project may require some additional configuration, but it is definitely worth the effort. Arquillian allows you to write effective integration tests that ensure the correct behavior of your application. By following the steps outlined in this blog post, you can successfully integrate Arquillian into your multi-module Maven project.

#Tech #Arquillian #Maven