| /** |
| * Copyright (C) 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.inject.servlet; |
| |
| import com.google.inject.Guice; |
| import com.google.inject.Inject; |
| import com.google.inject.Injector; |
| import com.google.inject.Key; |
| import com.google.inject.OutOfScopeException; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.Singleton; |
| import com.google.inject.internal.util.ImmutableMap; |
| import com.google.inject.internal.util.Maps; |
| import com.google.inject.name.Named; |
| import com.google.inject.name.Names; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import javax.servlet.ServletException; |
| import junit.framework.TestCase; |
| |
| /** |
| * Tests continuation of requests |
| */ |
| public class ScopeRequestIntegrationTest extends TestCase { |
| private static final String A_VALUE = "thereaoskdao"; |
| private static final String A_DIFFERENT_VALUE = "hiaoskd"; |
| |
| private static final String SHOULDNEVERBESEEN = "Shouldneverbeseen!"; |
| |
| public final void testNonHttpRequestScopedCallable() |
| throws ServletException, IOException, InterruptedException, ExecutionException { |
| ExecutorService executor = Executors.newSingleThreadExecutor(); |
| |
| // We use servlet module here because we want to test that @RequestScoped |
| // behaves properly with the non-HTTP request scope logic. |
| Injector injector = Guice.createInjector(new ServletModule() { |
| @Override protected void configureServlets() { |
| bindConstant().annotatedWith(Names.named(SomeObject.INVALID)).to(SHOULDNEVERBESEEN); |
| bind(SomeObject.class).in(RequestScoped.class); |
| } |
| }); |
| |
| SomeObject someObject = new SomeObject(A_VALUE); |
| OffRequestCallable offRequestCallable = injector.getInstance(OffRequestCallable.class); |
| executor.submit(ServletScopes.scopeRequest(offRequestCallable, |
| ImmutableMap.<Key<?>, Object>of(Key.get(SomeObject.class), someObject))).get(); |
| |
| assertSame(injector.getInstance(OffRequestCallable.class), offRequestCallable); |
| |
| // Make sure the value was passed on. |
| assertEquals(someObject.value, offRequestCallable.value); |
| assertFalse(SHOULDNEVERBESEEN.equals(someObject.value)); |
| |
| // Now create a new request and assert that the scopes don't cross. |
| someObject = new SomeObject(A_DIFFERENT_VALUE); |
| executor.submit(ServletScopes.scopeRequest(offRequestCallable, |
| ImmutableMap.<Key<?>, Object>of(Key.get(SomeObject.class), someObject))).get(); |
| |
| assertSame(injector.getInstance(OffRequestCallable.class), offRequestCallable); |
| |
| // Make sure the value was passed on. |
| assertEquals(someObject.value, offRequestCallable.value); |
| assertFalse(SHOULDNEVERBESEEN.equals(someObject.value)); |
| executor.shutdown(); |
| executor.awaitTermination(2, TimeUnit.SECONDS); |
| } |
| |
| public final void testWrongValueClasses() throws Exception { |
| Injector injector = Guice.createInjector(new ServletModule() { |
| @Override protected void configureServlets() { |
| bindConstant().annotatedWith(Names.named(SomeObject.INVALID)).to(SHOULDNEVERBESEEN); |
| bind(SomeObject.class).in(RequestScoped.class); |
| } |
| }); |
| |
| OffRequestCallable offRequestCallable = injector.getInstance(OffRequestCallable.class); |
| try { |
| ServletScopes.scopeRequest(offRequestCallable, |
| ImmutableMap.<Key<?>, Object>of(Key.get(SomeObject.class), "Boo!")); |
| fail(); |
| } catch(IllegalArgumentException iae) { |
| assertEquals("Value[Boo!] of type[java.lang.String] is not compatible with key[" + Key.get(SomeObject.class) + "]", iae.getMessage()); |
| } |
| } |
| |
| public final void testNullReplacement() throws Exception { |
| Injector injector = Guice.createInjector(new ServletModule() { |
| @Override protected void configureServlets() { |
| bindConstant().annotatedWith(Names.named(SomeObject.INVALID)).to(SHOULDNEVERBESEEN); |
| bind(SomeObject.class).in(RequestScoped.class); |
| } |
| }); |
| |
| Callable<SomeObject> callable = injector.getInstance(Caller.class); |
| try { |
| assertNotNull(callable.call()); |
| fail(); |
| } catch(ProvisionException pe) { |
| assertTrue(pe.getCause() instanceof OutOfScopeException); |
| } |
| |
| // Validate that an actual null entry in the map results in a null injected object. |
| Map<Key<?>, Object> map = Maps.newHashMap(); |
| map.put(Key.get(SomeObject.class), null); |
| callable = ServletScopes.scopeRequest(injector.getInstance(Caller.class), map); |
| assertNull(callable.call()); |
| } |
| |
| @RequestScoped |
| public static class SomeObject { |
| private static final String INVALID = "invalid"; |
| |
| @Inject |
| public SomeObject(@Named(INVALID) String value) { |
| this.value = value; |
| } |
| private final String value; |
| } |
| |
| @Singleton |
| public static class OffRequestCallable implements Callable<String> { |
| @Inject Provider<SomeObject> someObject; |
| |
| public String value; |
| |
| public String call() throws Exception { |
| // Inside this request, we should always get the same instance. |
| assertSame(someObject.get(), someObject.get()); |
| |
| value = someObject.get().value; |
| assertFalse(SHOULDNEVERBESEEN.equals(value)); |
| |
| return value; |
| } |
| } |
| |
| private static class Caller implements Callable<SomeObject> { |
| @Inject Provider<SomeObject> someObject; |
| |
| public SomeObject call() throws Exception { |
| return someObject.get(); |
| } |
| } |
| } |