InstantiatedWithDestroyTest.java

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package com.sun.jersey.impl.lifecycle;

import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProviderFactory;
import com.sun.jersey.impl.AbstractResourceTester;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ioc.IoCDestroyable;
import com.sun.jersey.core.spi.component.ioc.IoCInstantiatedComponentProvider;
import com.sun.jersey.spi.resource.Singleton;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
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
 */
@SuppressWarnings("unchecked")
public class InstantiatedWithDestroyTest extends AbstractResourceTester {
    
    public InstantiatedWithDestroyTest(String testName) {
        super(testName);
    }
    
    @Target({ElementType.TYPE})
    @Retention(RetentionPolicy.RUNTIME)
    public static @interface ManagedResource {}

    @ManagedResource
    @Path("/")
    public static class PerRequestResource {
        @GET
        public String get() {
            return "GET";
        }
    }

    @ManagedResource
    @Singleton
    @Path("/")
    public static class SingletonResource {
        @GET
        public String get() {
            return "GET";
        }
    }

    @ManagedResource
    @Provider
    public static class StringWriter implements MessageBodyWriter<String> {

        public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return type == String.class;
        }

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

        public void writeTo(String t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
                MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
            entityStream.write(t.getBytes());
        }
    }

    static class InstantiatedIoCComponentProviderFactory implements IoCComponentProviderFactory {
        private Set<Class> destroyedClasses = new HashSet<Class>();

        private boolean hasGetInjectableInstanceBeenCalled = false;
        
        public Set<Class> getDestroyedClasses() {
            return destroyedClasses;
        }

        public boolean hasGetInjectableInstanceBeenCalled() {
            return hasGetInjectableInstanceBeenCalled;
        }
        
        public IoCComponentProvider getComponentProvider(Class c) {
            if (!c.isAnnotationPresent(ManagedResource.class))
                return null;

            return new InstantiatedIoCComponentProvider(c);
        }

        public IoCComponentProvider getComponentProvider(ComponentContext cc, Class c) {
            return getComponentProvider(c);
        }

        private class InstantiatedIoCComponentProvider implements IoCInstantiatedComponentProvider, IoCDestroyable {
            private final Class c;

            InstantiatedIoCComponentProvider(Class c) {
                this.c = c;
            }

            public Object getInjectableInstance(Object o) {
                hasGetInjectableInstanceBeenCalled = true;
                return o;
            }

            public Object getInstance() {
                try {
                    return c.newInstance();
                } catch (Exception ex) {
                    throw new ContainerException(ex);
                }
            }

            public void destroy(Object o) {
                destroyedClasses.add(o.getClass());
            }

        }
    }

    public void testPerRequest() {
        InstantiatedIoCComponentProviderFactory f = new InstantiatedIoCComponentProviderFactory();
        initiateWebApplication(f, PerRequestResource.class);
        
        String s = resource("/").get(String.class);

        assertTrue(f.getDestroyedClasses().contains(PerRequestResource.class));
        assertFalse(f.hasGetInjectableInstanceBeenCalled());
    }

    public void testSingleton() {
        InstantiatedIoCComponentProviderFactory f = new InstantiatedIoCComponentProviderFactory();
        initiateWebApplication(f, SingletonResource.class, StringWriter.class);

        String s = resource("/").get(String.class);

        w.destroy();
        
        assertTrue(f.getDestroyedClasses().contains(SingletonResource.class));
        assertTrue(f.getDestroyedClasses().contains(StringWriter.class));
        assertFalse(f.hasGetInjectableInstanceBeenCalled());
    }
}