SingletonLifecycleTest.java

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package com.sun.jersey.impl.lifecycle;

import com.sun.jersey.impl.AbstractResourceTester;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.core.ResourceContext;
import com.sun.jersey.spi.resource.Singleton;
import java.io.File;
import java.io.IOException;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.ws.rs.core.Context;

/**
 *
 * @author Marc Hadley
 */
public class SingletonLifecycleTest extends AbstractResourceTester {
            
    public SingletonLifecycleTest(String testName) {
        super(testName);
    }
        
    @Path("/")
    @Singleton
    public static class PostConstructResource {
        private int count;

        @Context HttpContext hc;

        public PostConstructResource() {
            this.count = 0;
        }

        @PostConstruct
        public void postConstruct() {
            count++;
            assertNotNull(hc);
        }

        @GET
        public String doGet() {
            return Integer.toString(count);
        }
    }
    
    public void testPostConstructResource() {
        initiateWebApplication(PostConstructResource.class);
        WebResource r = resource("/");
        assertEquals("1", r.get(String.class));
        assertEquals("1", r.get(String.class));
        assertEquals("1", r.get(String.class));
    }

    @Path("/")
    @Singleton
    public static class PreDestroyResource {
        File f;

        public PreDestroyResource() throws IOException {
            f = File.createTempFile("jersey", null);
        }

        @GET
        public String getFileName() {
            return f.getAbsolutePath();
        }

        @PreDestroy
        public void preDestroy() {
            assertTrue(f.exists());
            f.delete();
        }
    }
    
    public void testPreDestroyResource() {
        initiateWebApplication(PreDestroyResource.class);
        WebResource r = resource("/");
        String s = r.get(String.class);
        w.destroy();
        
        File f = new File(s);
        assertFalse(f.exists());
    }

    @Path("/")
    @Singleton
    public static class ReferredToResource {
        @Path("sub")
        public ReferencingOfResource get() {
            return new ReferencingOfResource();
        }
    }

    public static class ReferencingOfResource {
        @GET
        public String get(@Context ResourceContext rc) {
            ReferredToResource r1 = rc.getResource(ReferredToResource.class);
            ReferredToResource r2 = rc.getResource(ReferredToResource.class);
            assertEquals(r1, r2);
            return "GET";
        }
    }
    
    public void testReferredToResource() {
        initiateWebApplication(ReferredToResource.class);
        WebResource r = resource("/sub");
        assertEquals("GET", r.get(String.class));
    }
}