1 Reply Latest reply on Aug 31, 2012 6:11 AM by aslak

Unit testing with Arquillian, Junit and JMockIt

massimo.manfredino Aug 27, 2012 12:40 PM

Hello to everyone,

we are trying to setup a unit testing scenario using Arquillian along with JMockIt for mocking the actual code of the method of the class under test.

The relevant part of our pom looks like this

...

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

<artifactId>shrinkwrap-resolver-bom</artifactId>

<version>2.0.0-alpha-1</version>

<scope>import</scope>

</dependency>

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

<artifactId>arquillian-bom</artifactId>

<version>1.0.2.Final</version>

<scope>import</scope>

</dependency>

</dependencies>

</dependencyManagement>

</dependency>

<groupId>javax</groupId>

<artifactId>javaee-api</artifactId>

<scope>provided</scope>

</dependency>

<groupId>org.jboss.spec</groupId>

<artifactId>jboss-javaee-6.0</artifactId>

<version>1.0.0.Final</version>

<scope>provided</scope>

</dependency>

<!-- PUT JMOCKIT DEPENDENCY BEFORE JUNIT OTHERWISE THE FOLLOWING ERROR

IS RAISED

WARNING: JMockit was initialized on demand, which may cause certain

tests to fail; please check the documentation for better ways to get

it initialized.

-->

<groupId>com.googlecode.jmockit</groupId>

<artifactId>jmockit</artifactId>

</dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

</dependency>

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

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

</dependency>

<!-- <dependency>

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

<artifactId>arquillian-container-test-api</artifactId>

</dependency> -->

<!-- And some additional ShrinkWrap descriptors that let us define or load

and modify beans.xml, persistence.xml, etc at test time -->

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

<artifactId>shrinkwrap-descriptors-impl-javaee</artifactId>

</dependency>

<!-- Add ShrinkWrap support for resolution of maven artifacts and addition

of dependencies into the test WAR archive using Maven. -->

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

<artifactId>shrinkwrap-resolver-impl-maven</artifactId>

</dependency>

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

<artifactId>arquillian-protocol-servlet</artifactId>

</dependency>

<groupId>org.jboss.as</groupId>

<artifactId>jboss-as-arquillian-container-remote</artifactId>

<version>7.1.1.Final</version>

</dependency>

...

while in out test class we create a jar to be deployed with

@Deployment

public static JavaArchive createDeployment() {

// create jar

JavaArchive greeterCDIJar = ShrinkWrap.create(JavaArchive.class, "greeter-cdi.jar");

greeterCDIJar.addClasses(Greeter.class, PhraseBuilder.class);

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

System.out.println("Composizione greeter-cdi.jar");

System.out.println(greeterCDIJar.toString(true));

return greeterCDIJar;

}

(the classes above are just the ones proposed by the Arquillian CDI tutorial)

and try to execute a test method (which involves some mocking) like this

@Test

public void dummyTest() {

new MockUp<PhraseBuilder>() {

@SuppressWarnings("unused")

@Mock

public String getFoo() {

return new String("bar");

}

};

.... (some assertion here)

}

please note how the actual method getFoo of the PhraseBuilder class gets mocked here!

Under these conditions we got the following exceptio

java.lang.ExceptionInInitializerError

at org.arquillian.example.GreeterTest2.dummyTest(GreeterTest2.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.jboss.arquillian.junit.Arquillian$6$1.invoke(Arquillian.java:270)

at org.jboss.arquillian.container.test.impl.execution.LocalTestExecuter.execute(LocalTestExecuter.java:60)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:115)

at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)

at org.jboss.arquillian.container.test.impl.execution.ContainerTestExecuter.execute(ContainerTestExecuter.java:38)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)

at org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:89)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)

at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:75)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)

at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:60)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)

at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.test(EventTestRunnerAdaptor.java:111)

at org.jboss.arquillian.junit.Arquillian$6.evaluate(Arquillian.java:263)

at org.jboss.arquillian.junit.Arquillian$4.evaluate(Arquillian.java:226)

at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)

at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)

at org.jboss.arquillian.junit.Arquillian$5.evaluate(Arquillian.java:240)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:185)

at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)

at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)

at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:199)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:147)

at org.junit.runner.JUnitCore.run(JUnitCore.java:157)

at org.junit.runner.JUnitCore.run(JUnitCore.java:136)

at org.jboss.arquillian.junit.container.JUnitTestRunner.execute(JUnitTestRunner.java:65)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.executeTest(ServletTestRunner.java:160)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.execute(ServletTestRunner.java:126)

at org.jboss.arquillian.protocol.servlet.runner.ServletTestRunner.doGet(ServletTestRunner.java:90)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)

at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)

at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)

at java.lang.Thread.run(Thread.java:722)

Caused by: java.lang.IllegalArgumentException: URI scheme is not "file"

at java.io.File.<init>(File.java:395)

at mockit.internal.startup.AgentInitialization.getPathToJarFileContainingThisClass(AgentInitialization.java:88)

at mockit.internal.startup.AgentInitialization.discoverPathToJarFile(AgentInitialization.java:39)

at mockit.internal.startup.AgentInitialization.initializeAccordingToJDKVersion(AgentInitialization.java:18)

at mockit.internal.startup.Startup.verifyInitialization(Startup.java:84)

at mockit.MockUp.<clinit>(MockUp.java:35)

... 94 more

The sample maven project we are playing with is attached.

Many thanks.

arquillian-jmockit.zip 5.4 KB

1. Re: Unit testing with Arquillian, Junit and JMockIt

aslak Aug 31, 2012 6:11 AM (in response to massimo.manfredino)

Looks like a fault in JMockit. Based on the stack trace it seems to assume it will be able to map 'the classloader itself is loaded in to a File on the file system'. That assumption is not correct in an AppServer.
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