ContextResolverTest.java

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package com.sun.jersey.impl.inject;

import com.sun.jersey.impl.AbstractResourceTester;
import com.sun.jersey.api.client.WebResource;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.Providers;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class ContextResolverTest extends AbstractResourceTester {
    
    public ContextResolverTest(String testName) {
        super(testName);
    }

    @Provider
    public static class IntegerContextResolver implements ContextResolver<String> {
        public String getContext(Class<?> objectType) {
            if (Integer.class == objectType)
                return objectType.getName();
            else
                return null;
        }
    }

    @Provider
    public static class BigIntegerContextResolver implements ContextResolver<String> {
        public String getContext(Class<?> objectType) {
            if (BigInteger.class == objectType)
                return objectType.getName();
            else
                return null;
        }
    }

    @Path("/")
    public static class NullContextResource {
        @Context ContextResolver<String> cr;

        @GET
        public String get() {
            return (cr == null) ? "null" : "value";
        }
    }

    @Path("/")
    public static class ContextResource {
        @Context Providers p;

        @Context ContextResolver<String> cr;

        @GET
        public String get() {
            ContextResolver<String> _cr = p.getContextResolver(String.class, null);
            assertEquals(_cr, cr);
            return cr.getContext(Integer.class);
        }

        @GET @Path("big")
        public String getBig() {
            return cr.getContext(BigInteger.class);
        }

        @GET @Path("null")
        public String getNull() {
            String s = cr.getContext(Float.class);
            return (s != null) ? s : "null";
        }
    }

    public void testZero() throws IOException {
        initiateWebApplication(NullContextResource.class);
        WebResource r = resource("/");

        assertEquals("null", resource("/").get(String.class));
    }

    public void testOne() throws IOException {
        initiateWebApplication(ContextResource.class, IntegerContextResolver.class);

        assertEquals("java.lang.Integer", resource("/").get(String.class));

        assertEquals("null", resource("/null").get(String.class));
    }

    public void testTwo() throws IOException {
        initiateWebApplication(ContextResource.class, IntegerContextResolver.class,
                BigIntegerContextResolver.class);

        assertEquals("java.lang.Integer", resource("/").get(String.class));

        assertEquals("java.math.BigInteger", resource("/big").get(String.class));

        assertEquals("null", resource("/null").get(String.class));
    }


    @Provider
    @Produces("application/one")
    public static class IntegerContextResolverMediaOne implements ContextResolver<String> {
        public String getContext(Class<?> objectType) {
            if (Integer.class == objectType)
                return objectType.getName();
            else
                return null;
        }
    }

    @Provider
    @Produces("application/one")
    public static class ByteContextResolverMediaOne implements ContextResolver<String> {
        public String getContext(Class<?> objectType) {
            if (Byte.class == objectType)
                return objectType.getName();
            else
                return null;
        }
    }

    @Provider
    @Produces("application/two")
    public static class BigIntegerContextResolverMediaTwo implements ContextResolver<String> {
        public String getContext(Class<?> objectType) {
            if (BigInteger.class == objectType)
                return objectType.getName();
            else
                return null;
        }
    }

    @Path("/")
    public static class ContextMediaResource {
        ContextResolver<String> crOne;
        ContextResolver<String> crTwo;

        public ContextMediaResource(@Context Providers p) {
            crOne = p.getContextResolver(String.class, MediaType.valueOf("application/one"));
            assertNotNull(crOne);
            crTwo = p.getContextResolver(String.class, MediaType.valueOf("application/two"));
            assertNotNull(crTwo);
        }

        @GET
        public String get() {
            assertNull(crOne.getContext(BigInteger.class));
            return crOne.getContext(Integer.class);
        }

        @GET @Path("byte")
        public String getByte() {
            assertNull(crOne.getContext(BigInteger.class));
            return crOne.getContext(Byte.class);
        }

        @GET @Path("big")
        public String getBig() {
            assertNull(crTwo.getContext(Integer.class));
            assertNull(crTwo.getContext(Byte.class));
            return crTwo.getContext(BigInteger.class);
        }
    }

    public void testMedia() throws IOException {
        initiateWebApplication(ContextMediaResource.class,
                ByteContextResolverMediaOne.class,
                IntegerContextResolverMediaOne.class,
                BigIntegerContextResolverMediaTwo.class);

        assertEquals("java.lang.Integer", resource("/").get(String.class));

        assertEquals("java.lang.Byte", resource("/byte").get(String.class));

        assertEquals("java.math.BigInteger", resource("/big").get(String.class));
    }


    public static class GenericResolver<T> implements ContextResolver<T> {
        private T t;

        GenericResolver(T t) {
            this.t = t;
        }

        public T getContext(Class<?> objectType) {
            if (t.getClass() == objectType)
                return t;
            else
                return null;
        }
    }

    @Provider
    public static class IntegerGeneticContextResolver extends GenericResolver<Integer> {

        public IntegerGeneticContextResolver() {
            super(1);
        }
    }

    @Path("/")
    public static class GenericContextResource {
        @Context Providers p;

        @Context ContextResolver<Integer> cr;

        @GET
        public String get() {
            ContextResolver<Integer> _cr = p.getContextResolver(Integer.class, null);
            assertEquals(_cr, cr);
            return cr.getContext(Integer.class).toString();
        }
    }

    public void testGenericContextResource() throws IOException {
        initiateWebApplication(GenericContextResource.class, IntegerGeneticContextResolver.class);
        WebResource r = resource("/");

        assertEquals("1", resource("/").get(String.class));
    }

    public static class ListStringResolver implements ContextResolver<List<String>> {
        public List<String> getContext(Class<?> objectType) {
            if (Integer.class == objectType)
                return Arrays.asList("1", "2", "3");
            else
                return null;
        }
    }

    @Path("/")
    public static class ListStringContextResource {
        @Context Providers p;

        @Context ContextResolver<List<String>> cr;

        @GET
        public String get() {
            List<String> l = cr.getContext(Integer.class);
            return l.get(0) + l.get(1) + l.get(2);
        }
    }

    public void testListStringContextResource() {
        initiateWebApplication(ListStringContextResource.class, ListStringResolver.class);
        WebResource r = resource("/");

        assertEquals("123", resource("/").get(String.class));
    }

}