Dropwizard / Jersey returns 204 for a resource

service_pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.hypem.recommender</groupId>
    <artifactId>service</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.9.5</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.yammer.dropwizard</groupId>
            <artifactId>dropwizard-testing</artifactId>
            <version>0.6.2</version>
        </dependency>
        <dependency>
            <groupId>com.hypem.recommender</groupId>
            <artifactId>api</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>
    
</project>

service_service.iml

<?xml version="1.0" encoding="UTF-8"?>
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    <output-test url="file://$MODULE_DIR$/target/test-classes" />
    <exclude-output />
    <content url="file://$MODULE_DIR$">
      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" isTestSource="false" />
      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
      <excludeFolder url="file://$MODULE_DIR$/target" />
    </content>
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
    <orderEntry type="module-library" scope="TEST">
      <library>
        <CLASSES>
          <root url="jar://$APPLICATION_HOME_DIR$/lib/junit-4.10.jar!/" />
        </CLASSES>
        <JAVADOC />
        <SOURCES />
      </library>
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  </component>
</module>

service_src_main_java_HypemRecommenderConfiguration.java

import com.yammer.dropwizard.config.Configuration;

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 04/09/2013
 * Time: 22:51
 */
public class HypemRecommenderConfiguration extends Configuration {


}

service_src_main_java_HypemRecommenderService.java

import com.yammer.dropwizard.Service;
import com.yammer.dropwizard.config.Bootstrap;
import com.yammer.dropwizard.config.Environment;

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 04/09/2013
 * Time: 22:51
 */
public class HypemRecommenderService extends Service<HypemRecommenderConfiguration> {

    public static void main(String[] args) throws Exception {
        new HypemRecommenderService().run(args);
    }

    @Override
    public void initialize(Bootstrap<HypemRecommenderConfiguration> bootstrap) {
        bootstrap.setName("hypem-recommender");
    }

    @Override
    public void run(HypemRecommenderConfiguration hypemRecommenderConfiguration, Environment environment) throws Exception {
        environment.addResource(new RatingResource(new MongoRatingDao()));
    }
}

service_src_main_java_MongoRatingDao.java

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 04/09/2013
 * Time: 23:01
 */
public class MongoRatingDao implements RatingDAO {
    @Override
    public Rating getRating(String username) {
        return null;  //To change body of implemented methods use File | Settings | File Templates.
    }
}

service_src_main_java_RatingDAO.java

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 03/09/2013
 * Time: 23:25
 */
public interface RatingDAO {
    public Rating getRating(String username);
}

service_src_main_java_RatingResource.java

import com.yammer.metrics.annotation.Timed;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 04/09/2013
 * Time: 22:35
 */
@Path("/ratings")
@Produces(MediaType.APPLICATION_JSON)
public class RatingResource {
    private RatingDAO ratingDao;

    public RatingResource(RatingDAO ratingDao) {
        this.ratingDao = ratingDao;
    }

    @GET
    @Timed
    public Rating getRating(@QueryParam("username") String username)  {
        return ratingDao.getRating(username);
    }
}

service_src_test_java_RatingResourceTest.java

import com.sun.jersey.api.client.Client;
import com.yammer.dropwizard.testing.ResourceTest;
import org.junit.Test;
import org.junit.Before;

import java.util.ArrayList;
import java.util.List;

import static org.fest.assertions.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

/**
 * Created with IntelliJ IDEA.
 * User: @karangb
 * Date: 03/09/2013
 * Time: 23:19
 */
public class RatingResourceTest extends ResourceTest {
    private final Track track1 = new Track("track1", "artist1");
    private final Track track2 = new Track("track2", "artist2");
    private final RatingDAO ratingDao = mock(RatingDAO.class);
    
    private List<Track> tracks;
    private Rating rating;


    @Before
    public void setUp()
    {
        tracks = new ArrayList<Track>();
        tracks.add(track1);
        tracks.add(track2);
        rating = new Rating(tracks);
    }

    @Override
    protected void setUpResources() throws Exception {
        when(ratingDao.getRating("karan")).thenReturn(rating);
        addResource(new RatingResource(ratingDao));
    }

    @Test
    public void testRatingsGetsTracks() throws Exception{
        assertThat(client().resource("/ratings").queryParam("username", "karan").get(Rating.class)).isEqualTo(rating);
        verify(ratingDao).getRating("karan");
    }

}

service_target_classes_HypemRecommenderConfiguration.class

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service_target_classes_HypemRecommenderService.class

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(Lcom/yammer/dropwizard/config/Bootstrap;
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run
L(LHypemRecommenderConfiguration;Lcom/yammer/dropwizard/config/Environment;)V
hypemRecommenderConfiguration
LHypemRecommenderConfiguration;
environment
*Lcom/yammer/dropwizard/config/Environment;
Y(Lcom/yammer/dropwizard/config/Configuration;Lcom/yammer/dropwizard/config/Environment;)V
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,Lcom/yammer/dropwizard/config/Configuration;
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HypemRecommenderService.java
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service_target_classes_MongoRatingDao.class

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LineNumberTable
LocalVariableTable
this
LMongoRatingDao;
	getRating
(Ljava/lang/String;)LRating;
username
Ljava/lang/String;

SourceFile
MongoRatingDao.java
MongoRatingDao
java/lang/Object
	RatingDAO!


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service_target_classes_RatingDAO.class

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	getRating
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RatingDAO.java
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service_target_classes_RatingResource.class

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(Ljava/lang/String;)LRating;
username
Ljava/lang/String;
RuntimeVisibleAnnotations
Ljavax/ws/rs/GET;
%Lcom/yammer/metrics/annotation/Timed;
"RuntimeVisibleParameterAnnotations
Ljavax/ws/rs/QueryParam;
value

SourceFile
RatingResource.java
Ljavax/ws/rs/Path;
/ratings
Ljavax/ws/rs/Produces;
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java/lang/Object
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service_target_test-classes_RatingResourceTest.class

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testRatingsGetsTracks
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