ResponseWriterMetadataTest.java

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package com.sun.jersey.impl.container.httpserver;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Path;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.core.DefaultResourceConfig;
import com.sun.jersey.api.core.ResourceConfig;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class ResponseWriterMetadataTest extends AbstractHttpServerTester {
    @Provider
    @Produces("text/plain")
    public static class StringWriter implements MessageBodyWriter<String> {

        public boolean isWriteable(Class<?> c, Type t, Annotation[] as, MediaType mt) {
            return String.class == c;
        }

        public long getSize(String s, Class<?> type, Type genericType, Annotation annotations[], MediaType mediaType) {
            return -1;
        }

        public void writeTo(String s, Class<?> c, Type t, Annotation[] as, 
                MediaType mt, MultivaluedMap<String, Object> headers, OutputStream out) 
                throws IOException, WebApplicationException {
            headers.add("X-BEFORE-WRITE", "x");
            out.write(s.getBytes());
            headers.add("X-AFTER-WRITE", "x");
        }
    }
    
    @Path("/")
    public static class Resource {
        @GET
        public String get() {
            return "one";
        }               
    }
        
    public ResponseWriterMetadataTest(String testName) {
        super(testName);
    }
    
    public void testResponse() {
        ResourceConfig rc = new DefaultResourceConfig(Resource.class,
                StringWriter.class);
        startServer(rc);

        WebResource r = Client.create().resource(getUri().path("/").build());
                
        ClientResponse cr = r.accept("text/plain").get(ClientResponse.class);
        assertEquals("x", cr.getMetadata().getFirst("X-BEFORE-WRITE"));
        assertNull(cr.getMetadata().getFirst("X-AFTER-WRITE"));
    }
}