| /** |
| * 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; |
| |
| import java.io.IOException; |
| |
| import junit.framework.TestCase; |
| |
| import com.google.inject.internal.Errors; |
| import com.google.inject.name.Named; |
| import com.google.inject.name.Names; |
| |
| /** |
| * Tests that ProvisionExceptions are readable and clearly indicate to the user what went wrong with |
| * their code. |
| * |
| * @author sameb@google.com (Sam Berlin) |
| */ |
| public class ProvisionExceptionsTest extends TestCase { |
| |
| public void testConstructorRuntimeException() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| @Override |
| protected void configure() { |
| bindConstant().annotatedWith(Names.named("runtime")).to(true); |
| bind(Exploder.class).to(Explosion.class); |
| bind(Tracer.class).to(TracerImpl.class); |
| } |
| }); |
| try { |
| injector.getInstance(Tracer.class); |
| fail(); |
| } catch(ProvisionException pe) { |
| // Make sure our initial error message gives the user exception. |
| Asserts.assertContains(pe.getMessage(), |
| "1) Error injecting constructor", "java.lang.IllegalStateException: boom!"); |
| assertEquals(1, pe.getErrorMessages().size()); |
| assertEquals(IllegalStateException.class, pe.getCause().getClass()); |
| assertEquals(IllegalStateException.class, Errors.getOnlyCause(pe.getErrorMessages()).getClass()); |
| } |
| } |
| |
| public void testConstructorCheckedException() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| @Override |
| protected void configure() { |
| bindConstant().annotatedWith(Names.named("runtime")).to(false); |
| bind(Exploder.class).to(Explosion.class); |
| bind(Tracer.class).to(TracerImpl.class); |
| } |
| }); |
| try { |
| injector.getInstance(Tracer.class); |
| fail(); |
| } catch(ProvisionException pe) { |
| // Make sure our initial error message gives the user exception. |
| Asserts.assertContains(pe.getMessage(), |
| "1) Error injecting constructor", "java.io.IOException: boom!"); |
| assertEquals(1, pe.getErrorMessages().size()); |
| assertEquals(IOException.class, pe.getCause().getClass()); |
| assertEquals(IOException.class, Errors.getOnlyCause(pe.getErrorMessages()).getClass()); |
| } |
| } |
| |
| public void testCustomProvidersRuntimeException() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| @Override |
| protected void configure() { |
| bind(Exploder.class).toProvider(new Provider<Exploder>() { |
| public Exploder get() { |
| return Explosion.createRuntime(); |
| } |
| }); |
| bind(Tracer.class).to(TracerImpl.class); |
| } |
| }); |
| try { |
| injector.getInstance(Tracer.class); |
| fail(); |
| } catch(ProvisionException pe) { |
| // Make sure our initial error message gives the user exception. |
| Asserts.assertContains(pe.getMessage(), |
| "1) Error in custom provider", "java.lang.IllegalStateException: boom!"); |
| assertEquals(1, pe.getErrorMessages().size()); |
| assertEquals(IllegalStateException.class, pe.getCause().getClass()); |
| assertEquals(IllegalStateException.class, Errors.getOnlyCause(pe.getErrorMessages()).getClass()); |
| } |
| } |
| |
| public void testProviderMethodRuntimeException() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| @Override |
| protected void configure() { |
| bind(Tracer.class).to(TracerImpl.class); |
| } |
| @Provides Exploder exploder() { |
| return Explosion.createRuntime(); |
| } |
| }); |
| try { |
| injector.getInstance(Tracer.class); |
| fail(); |
| } catch(ProvisionException pe) { |
| // Make sure our initial error message gives the user exception. |
| Asserts.assertContains(pe.getMessage(), |
| "1) Error in custom provider", "java.lang.IllegalStateException: boom!"); |
| assertEquals(1, pe.getErrorMessages().size()); |
| assertEquals(IllegalStateException.class, pe.getCause().getClass()); |
| assertEquals(IllegalStateException.class, Errors.getOnlyCause(pe.getErrorMessages()).getClass()); |
| } |
| } |
| |
| public void testProviderMethodCheckedException() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| @Override |
| protected void configure() { |
| bind(Tracer.class).to(TracerImpl.class); |
| } |
| @Provides Exploder exploder() throws IOException { |
| return Explosion.createChecked(); |
| } |
| }); |
| try { |
| injector.getInstance(Tracer.class); |
| fail(); |
| } catch(ProvisionException pe) { |
| pe.printStackTrace(); |
| // Make sure our initial error message gives the user exception. |
| Asserts.assertContains(pe.getMessage(), |
| "1) Error in custom provider", "java.io.IOException: boom!"); |
| assertEquals(1, pe.getErrorMessages().size()); |
| assertEquals(IOException.class, pe.getCause().getClass()); |
| assertEquals(IOException.class, Errors.getOnlyCause(pe.getErrorMessages()).getClass()); |
| } |
| } |
| |
| private static interface Exploder {} |
| public static class Explosion implements Exploder { |
| @Inject public Explosion(@Named("runtime") boolean runtime) throws IOException { |
| if(runtime) { |
| throw new IllegalStateException("boom!"); |
| } else { |
| throw new IOException("boom!"); |
| } |
| } |
| |
| public static Explosion createRuntime() { |
| try { |
| return new Explosion(true); |
| } catch(IOException iox) { |
| throw new RuntimeException(); |
| } |
| } |
| |
| public static Explosion createChecked() throws IOException { |
| return new Explosion(false); |
| } |
| } |
| private static interface Tracer {} |
| private static class TracerImpl implements Tracer { |
| @Inject TracerImpl(Exploder explosion) { |
| } |
| } |
| } |