Maboi Maboi - 1 month ago 41
reST (reStructuredText) Question

Why does JerseyTest throw ConstraintViolationException instead of returning 400 Bad Request?

I am using Jersey version 2.23.2 and I am unable to figure out how to use

JerseyTest
to test the responses for when validation fails. For some reason, the below test throws a
ConstraintViolationException
which is wrapped in a
ProcessingException
instead of returning
400
Bad Request. I could modify the test to check that the
ProcessingException
is thrown, but I really want to test the response. When I run
HelloResource
in Grizzly without
JerseyTest
, I get the appropriate
400
Bad Request response. Any ideas on how to fix the
badRequestResponse()
test below?

package example;

import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.ServerProperties;
import org.glassfish.jersey.test.JerseyTest;
import org.junit.Test;

import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.client.Entity;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;

import static org.junit.Assert.assertEquals;

public class BadRequestTest extends JerseyTest {
@XmlAccessorType(XmlAccessType.FIELD)
public static class Hello {
@NotNull(message = "Name is a required field.")
private final String name;

private Hello() {
this(null);
}

public Hello(String name) {
this.name = name;
}

public String getName() {
return name;
}
}

@Path("hello")
public static class HelloResource {
@POST
public String sayHelloToMe(@Valid Hello hello) {
return "Hello " + hello.getName() + "!";
}
}

@Override
protected Application configure() {
return new ResourceConfig(HelloResource.class).property(ServerProperties.BV_SEND_ERROR_IN_RESPONSE, true);
}

/** Test OK Response. This Works!*/
@Test
public void okResponse() {
Response response = target("hello")
.request(MediaType.TEXT_PLAIN)
.post(Entity.json(new Hello("Tiny Tim")));

assertEquals(Response.Status.OK.getStatusCode(), response.getStatus());
assertEquals("Hello Tiny Tim!", response.readEntity(String.class));
}

/** Test Bad Request Response. This Fails! */
@Test
public void badRequestResponse() {
Response response = target("hello")
.request(MediaType.TEXT_PLAIN)
.post(Entity.json(new Hello(null)));

assertEquals(Response.Status.BAD_REQUEST.getStatusCode(), response.getStatus());
}
}


Here's the exception I am getting:

javax.ws.rs.ProcessingException:
Exception Description: Constraints violated on marshalled bean:
example.BadRequestTest$Hello@456abb66
-->Violated constraint on property name: "Name is a required field.".
Internal Exception: javax.validation.ConstraintViolationException

at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:261)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:684)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:681)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:681)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:437)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:343)
at example.BadRequestTest.badRequestResponse(BadRequestTest.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: Exception [EclipseLink-7510] (Eclipse Persistence Services - 2.6.0.v20150309-bf26070): org.eclipse.persistence.exceptions.BeanValidationException
Exception Description: Constraints violated on marshalled bean:
example.BadRequestTest$Hello@456abb66
-->Violated constraint on property name: "Name is a required field.".
Internal Exception: javax.validation.ConstraintViolationException
at org.eclipse.persistence.exceptions.BeanValidationException.constraintViolation(BeanValidationException.java:53)
at org.eclipse.persistence.jaxb.JAXBBeanValidator.buildConstraintViolationException(JAXBBeanValidator.java:385)
at org.eclipse.persistence.jaxb.JAXBBeanValidator.validate(JAXBBeanValidator.java:273)
at org.eclipse.persistence.jaxb.JAXBMarshaller.validateAndTransformIfNeeded(JAXBMarshaller.java:588)
at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:481)
at org.eclipse.persistence.jaxb.rs.MOXyJsonProvider.writeTo(MOXyJsonProvider.java:949)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.client.ClientRequest.doWriteEntity(ClientRequest.java:517)
at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:499)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:388)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:252)
... 39 more
Caused by: javax.validation.ConstraintViolationException
at org.eclipse.persistence.jaxb.JAXBBeanValidator.buildConstraintViolationException(JAXBBeanValidator.java:383)
... 52 more

Answer

This is a client side problem. As you've discovered MOXy has bean validation on by default. So you are getting bean validation on the client. So the request is not even going through as the error is happening on the client. You could test this by just sending a string

Entity.json("{}")

That should get rid of the error. But if you want to use the bean, as you mentioned in the comment, you should disable the bean validation on the client with MOXy

@Override 
protected void configureClient(final ClientConfig config) {  
    super.configureClient(config);
    config.register(new MoxyJsonConfig() 
            .property(MarshallerProperties.BEAN_VALIDATION_MODE,
                      BeanValidationMode.NONE).resolver());
}