1 Reply Latest reply on Feb 24, 2017 1:46 AM by mjobanek

NoClassDefFoundError: Failed to link

tnguyen90 Feb 24, 2017 10:35 AM

Hi All,

I'm new to Arquillian, I followed the "Getting Started" and it went very smoothly. But when I try to run a simple unit-test with arquillian on my current project, it is giving me an error that it cannot link to the class (AuthenticationCommand). The test is a simple assert true just to see if i'm able to run arquillian. The hystrix is in a jar and set as a maven dependency.

AuthenticationCommandTest.java

import javax.inject.Inject;

import org.jboss.arquillian.container.test.api.Deployment;

import org.jboss.arquillian.junit.Arquillian;

import org.jboss.shrinkwrap.api.ShrinkWrap;

import org.jboss.shrinkwrap.api.spec.JavaArchive;

import org.jboss.shrinkwrap.api.asset.EmptyAsset;

import org.junit.Assert;

import org.junit.Test;

import org.junit.runner.RunWith;

import static org.junit.Assert.*;

import static org.hamcrest.core.Is.*;

@RunWith(Arquillian.class)

public class AuthenticationCommandTest {

@Inject

private AuthenticationCommand authenticationCommand;

@Deployment

public static JavaArchive createDeployment() {

return ShrinkWrap.create(JavaArchive.class)

.addClass(AuthenticationCommand.class)

.addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");

}

@Test

public void should_be_deployed() {

Assert.assertNotNull(authenticationCommand);

Assert.assertTrue(true);

}

AuthenticationCommand.java

import java.nio.charset.Charset;

import java.security.AccessControlException;

import java.util.Base64;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.netflix.hystrix.HystrixCommand;

import com.netflix.hystrix.HystrixCommandGroupKey;

public class AuthenticationCommand extends HystrixCommand<String> {

private static Logger log = LoggerFactory.getLogger(AuthenticationCommand.class);

public static final String COMMAND_NAME = "GetToken";

private String userCredentials;

public AuthenticationCommand(String userCredentials){

super(HystrixCommandGroupKey.Factory.asKey(COMMAND_NAME));

this.userCredentials = userCredentials;

}

@Override

protected String run() throws Exception {

if (isValid(userCredentials)) {

return "";

}

throw new AccessControlException("Not Authorized");

}

@Override

protected String getFallback() {

return null;

}

public boolean isValid(String userCredentials) {

if (userCredentials != null && userCredentials.startsWith("Basic"))

return true; //TODO: implement logic to check if the credentials match the database and return a token

}

return false;

}

arquillian.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<property name="chameleonTarget">wildfly:10.1.0.Final:MANAGED</property>

</configuration>

</container>

</arquillian>

pom.xml

<id>arquillian-wildfly-managed</id>

</activation>

<build>

<artifactId>maven-surefire-plugin</artifactId>

<arquillian.launch>arquillian-wildfly-managed</arquillian.launch>

<chameleon.target>wildfly:10.1.0.Final:MANAGED</chameleon.target>

</systemPropertyVariables>

</configuration>

</plugin>

</plugins>

</build>

</profile>

</profiles>

<groupId>org.jboss.arquillian</groupId>

<artifactId>arquillian-bom</artifactId>

<version>${version.arquillian}</version>

<scope>import</scope>

</dependency>

<groupId>org.jboss.shrinkwrap</groupId>

<artifactId>shrinkwrap-bom</artifactId>

<scope>import</scope>

</dependency>

</dependencies>

</dependencyManagement>

<groupId>org.arquillian.universe</groupId>

<artifactId>arquillian-junit</artifactId>

</dependency>

<groupId>org.arquillian.universe</groupId>

<artifactId>arquillian-chameleon</artifactId>

</dependency>

<groupId>org.jboss.arquillian.junit</groupId>

<artifactId>arquillian-junit-container</artifactId>

</dependency>

<groupId>org.jboss.shrinkwrap</groupId>

<artifactId>shrinkwrap-depchain</artifactId>

</dependency>

</dependencies>

Failure Trace

java.lang.NoClassDefFoundError: Failed to link com/core/auth/AuthenticationCommand (Module "deployment.test.war:main" from Service Module Loader): com/netflix/hystrix/HystrixCommand

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:446)

at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:274)

at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:78)

at org.jboss.modules.Module.loadModuleClass(Module.java:606)

at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)

at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)

at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)

at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)

at java.lang.Class.getDeclaredFields0(Native Method)

at java.lang.Class.privateGetDeclaredFields(Class.java:2583)

at java.lang.Class.getDeclaredFields(Class.java:1916)

at org.junit.runners.model.TestClass.getSortedDeclaredFields(TestClass.java:77)

at org.junit.runners.model.TestClass.scanAnnotatedMembers(TestClass.java:70)

at org.junit.runners.model.TestClass.<init>(TestClass.java:57)

at org.junit.runners.ParentRunner.createTestClass(ParentRunner.java:88)

at org.junit.runners.ParentRunner.<init>(ParentRunner.java:83)

at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)

at org.jboss.arquillian.junit.Arquillian.<init>(Arquillian.java:61)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)

at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)

at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)

at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)

at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)

at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)

at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)

at org.junit.runner.JUnitCore.run(JUnitCore.java:115)

at org.jboss.arquillian.junit.container.JUnitTestRunner.execute(JUnitTestRunner.java:66)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.executeTest(ServletTestRunner.java:170)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.execute(ServletTestRunner.java:135)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.doGet(ServletTestRunner.java:98)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)

at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)

at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)

at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)

at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)

at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)

at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)

at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)

at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)

at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

Thank you in advance for your time!

1. Re: NoClassDefFoundError: Failed to link

mjobanek Feb 24, 2017 1:46 AM (in response to tnguyen90)

Hi,
looking at the stacktrace - not sure what the "PathToAuthenticationCommand" stands for...?
Anyway, the problem is probably because you are missing the class "com/netflix/hystrix/HystrixCommand" on the container side (where the test is run). To run the AuthenticationCommand.java class in a container you need to have all necessary libraries available there. This can be done by adding the libraries into the deployment.
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