Misleading error when using Assertions.assertInstanceOf, or possibly a bug in the servlet protocol

[jamezp]

Issue Overview

When attempting to use Assertions.assertInstanceOf() I received a very cryptic error. This was for an in-container test.

Assertions.assertInstanceOf(ResteasyClient.class, client);

Error from Arqullian:

[ERROR] org.jboss.resteasy.test.client.other.ClientHttpEngineTest.testInjectedClient -- Time elapsed: 188.3 s <<< ERROR!
org.jboss.arquillian.test.spi.ArquillianProxyException: org.jboss.arquillian.junit5.IdentifiedTestException : null [Proxied because : Original exception caused: class java.lang.ClassNotFoundException: org.jboss.weld.generated.proxies.ws.rs.client.Client$Configurable$AutoCloseable$2078960113$Proxy$_$$_WeldClientProxy]
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.junit5.container.JUnitJupiterTestRunner$ArquillianTestMethodExecutionListener.getTestResult(JUnitJupiterTestRunner.java:101)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.junit5.container.JUnitJupiterTestRunner$ArquillianTestMethodExecutionListener.access$100(JUnitJupiterTestRunner.java:69)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.junit5.container.JUnitJupiterTestRunner.execute(JUnitJupiterTestRunner.java:58)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.protocol.servlet5.runner.ServletTestRunner.executeTest(ServletTestRunner.java:139)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.protocol.servlet5.runner.ServletTestRunner.execute(ServletTestRunner.java:117)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.protocol.servlet5.runner.ServletTestRunner.doGet(ServletTestRunner.java:86)
    at [email protected]//jakarta.servlet.http.HttpServlet.service(HttpServlet.java:633)
    at [email protected]//jakarta.servlet.http.HttpServlet.service(HttpServlet.java:723)
    at [email protected]//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
    at [email protected]//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
    at [email protected]//io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
    at [email protected]//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
    at [email protected]//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.lambda$handleRequest$1(ElytronRunAsHandler.java:68)
    at [email protected]//org.wildfly.security.auth.server.FlexibleIdentityAssociation.runAsFunctionEx(FlexibleIdentityAssociation.java:103)
    at [email protected]//org.wildfly.security.auth.server.Scoped.runAsFunctionEx(Scoped.java:161)
    at [email protected]//org.wildfly.security.auth.server.Scoped.runAs(Scoped.java:73)
    at [email protected]//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.handleRequest(ElytronRunAsHandler.java:67)
    at [email protected]//io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
    at [email protected]//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117)
    at [email protected]//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
    at [email protected]//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at [email protected]//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
    at [email protected]//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
    at [email protected]//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
    at org.wildfly.security.elytron-web.undertow-server-servlet@4.1.0.Final//org.wildfly.elytron.web.undertow.server.servlet.CleanUpHandler.handleRequest(CleanUpHandler.java:38)
    at [email protected]//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at [email protected]//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:44)
    at [email protected]//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at [email protected]//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:51)
    at [email protected]//io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
    at [email protected]//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at [email protected]//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276)
    at [email protected]//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
    at [email protected]//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132)
    at [email protected]//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
    at [email protected]//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at [email protected]//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
    at [email protected]//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
    at [email protected]//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
    at [email protected]//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1421)
    at [email protected]//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256)
    at [email protected]//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:101)
    at [email protected]//io.undertow.server.Connectors.executeRootHandler(Connectors.java:395)
    at [email protected]//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:861)
    at [email protected]//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at [email protected]//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
    at [email protected]//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at [email protected]//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1348)
    at [email protected]//org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282)
    at java.base/java.lang.Thread.run(Thread.java:840)

Expected Behaviour

The true assertion should have been printed which I found in debugging was:

org.opentest4j.AssertionFailedError: Unexpected type, expected: <org.jboss.resteasy.client.jaxrs.ResteasyClient> but was: <org.jboss.weld.generated.proxies.ws.rs.client.Client$Configurable$AutoCloseable$2078960113$Proxy$_$$_WeldClientProxy>
    at deployment.ClientHttpEngineTest.war//org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
    at deployment.ClientHttpEngineTest.war//org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
    at deployment.ClientHttpEngineTest.war//org.junit.jupiter.api.AssertInstanceOf.assertInstanceOf(AssertInstanceOf.java:49)
    at deployment.ClientHttpEngineTest.war//org.junit.jupiter.api.AssertInstanceOf.assertInstanceOf(AssertInstanceOf.java:31)
    at deployment.ClientHttpEngineTest.war//org.junit.jupiter.api.Assertions.assertInstanceOf(Assertions.java:3614)
    at deployment.ClientHttpEngineTest.war//org.jboss.resteasy.test.client.other.ClientHttpEngineTest.testInjectedClient(ClientHttpEngineTest.java:68)
    at java.base/java.lang.reflect.Method.invoke(Method.java:569)
    at deployment.ClientHttpEngineTest.war//org.jboss.arquillian.junit5.ArquillianExtension.interceptTestMethod(ArquillianExtension.java:87)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)

Current Behaviour

The error above is printed which doesn't really explain what is happening.

Steps To Reproduce

I've not attempted to create a reproducer, but something simple like this would work with WildFly Arquillian.

package org.jboss.resteasy.test.client.other;

import jakarta.enterprise.context.ApplicationScoped;
import jakarta.inject.Inject;
import jakarta.ws.rs.client.Client;

import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.junit5.ArquillianExtension;
import org.jboss.resteasy.client.jaxrs.ResteasyClient;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.asset.EmptyAsset;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

@ExtendWith(ArquillianExtension.class)
@ApplicationScoped
public class ClientHttpEngineTest {

    @Inject
    private Client client;

    @Deployment
    public static WebArchive deployment() {
        return ShrinkWrap.create(WebArchive.class, ClientHttpEngineTest.class.getSimpleName() + ".war")
                .addClass(ClientHttpEngineTest.class)
                .addAsWebInfResource(EmptyAsset.INSTANCE, "beans.xml");
    }

    @Test
    public void testInjectedClient() throws Exception {
        Assertions.assertInstanceOf(ResteasyClient.class, client);
    }
}

Note the test will fail because the injected jakarta.ws.rs.client.Client is a Weld proxy and not an instance of org.jboss.resteasy.client.jaxrs.ResteasyClient. However, I had to debug Arquillian to figure that out.

Additional Information

Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Maven home: /home/jperkins/apps/maven
Java version: 17.0.13, vendor: Red Hat, Inc., runtime: /usr/lib/jvm/java-17-openjdk-17.0.13.0.11-1.fc41.x86_64
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "6.11.5-300.fc41.x86_64", arch: "amd64", family: "unix"