Fail to deploy ArquillianTest for a SpringBoot embeded Camunda engine

[paulbors]

I’m using Community Edition v7.10 embedded the engine inside spring-boot-starter-jersey with camunda-bpm-spring-boot-starter, camunda-bpm-spring-boot-starter-rest, camunda-bpm-spring-boot-starter-webapp and would like to write integration tests at Test Scope 2:

Testing process definitions | Camunda 8 Docs

Thus I packaged my app in the test jar as a WAR and shipped it over to the Wildfly container. I see the example invoice app deploying, then my test war is trying to deploy but keep failing with:

ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool – 108) MSC000001: Failed to start service jboss.deployment.unit.“trust-profile-integra
tion-test.war”.undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit.“trust-profile-integration-test.war”.undertow-deployment
: java.lang.RuntimeException: java.lang.ClassCastException: org.apache.tomcat.websocket.server.WsServerContainer cannot be cast to io.undertow.websockets.jsr.Serv
erWebSocketContainer

My test context setup for Arquillian is:

<profile>
            <id>wildfly-managed</id>
            <dependencies>
                <dependency>
                    <!-- CDI integration, needs to be included in WAR, otherwise CDI can not work correctly -->
                    <groupId>org.camunda.bpm</groupId>
                    <artifactId>camunda-engine-cdi</artifactId>
                    <scope>test</scope>
                </dependency>
                <dependency>
                    <!-- Exclude Tomcat -->
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                    <scope>provided</scope>
                </dependency>
                <dependency>
                    <!-- Exclude Tomcat -->
                    <groupId>org.apache.tomcat.embed</groupId>
                    <artifactId>tomcat-embed-websocket</artifactId>
                    <scope>provided</scope>
                </dependency>
                <!-- dependency>
                    <groupId>org.camunda.commons</groupId>
                    <artifactId>camunda-commons-typed-values</artifactId>
                    <version>7.13.0-SNAPSHOT</version>
                    <scope>test</scope>
                </dependency -->
                <!-- Needed for ArquillianTest -->
                <dependency>
                    <groupId>org.wildfly.arquillian</groupId>
                    <artifactId>wildfly-arquillian-container-managed</artifactId>
                    <version>${wildfly.container.adapter.version}</version>
                    <scope>test</scope>
                </dependency>
                <dependency>
                    <groupId>org.jboss.arquillian.junit</groupId>
                    <artifactId>arquillian-junit-container</artifactId>
                    <scope>test</scope>
                </dependency>
                <dependency>
                    <groupId>org.jboss.arquillian.protocol</groupId>
                    <artifactId>arquillian-protocol-servlet</artifactId>
                    <scope>test</scope>
                </dependency>
                <dependency>
                    <groupId>org.jboss.shrinkwrap.resolver</groupId>
                    <artifactId>shrinkwrap-resolver-impl-maven</artifactId>
                    <scope>test</scope>
                </dependency>
            </dependencies>
            <build>
                <testResources>
                    <testResource>
                        <directory>src/test/resources</directory>
                        <filtering>true</filtering>
                    </testResource>
                </testResources>
                <plugins>
                    <!-- clean h2 database from camunda-bpm-wildfly -->
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-clean-plugin</artifactId>
                        <version>2.6</version>
                        <configuration>
                            <filesets>
                                <fileset>
                                    <directory>camunda-h2-dbs</directory>
                                    <includes>
                                        <include>**/*</include>
                                    </includes>
                                    <followSymlinks>false</followSymlinks>
                                </fileset>
                            </filesets>
                            <failOnError>false</failOnError>
                        </configuration>
                    </plugin>
                    <!-- unpack camunda bpm wildfly distro -->
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-dependency-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>unpack-server</id>
                                <phase>generate-resources</phase>
                                <goals>
                                    <goal>unpack</goal>
                                </goals>
                                <inherited>false</inherited>
                                <configuration>
                                    <artifactItems>
                                        <artifactItem>
                                            <groupId>org.camunda.bpm.wildfly</groupId>
                                            <artifactId>camunda-bpm-wildfly</artifactId>
                                            <version>7.13.0-SNAPSHOT</version>
                                            <type>tar.gz</type>
                                            <overWrite>true</overWrite>
                                            <outputDirectory>${project.build.directory}/wildfly</outputDirectory>
                                        </artifactItem>
                                    </artifactItems>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>

Would someone please provide a hint?

[paulbors]

I think my mistake here is trying to get a stand-alone process engine app over to a shared one by packaging it as a WAR for the test context.

Could we in turn run Aquillian tests for a spring boot stand-alone embedded process engine?
Is there such an example somewhere on Camunda’s GitHub repos?