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/*
* 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 com.google.inject.internal.Messages;
import com.google.inject.name.Named;
import com.google.inject.name.Names;
import java.io.IOException;
import junit.framework.TestCase;
/**
* 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) [Guice/ErrorInjectingConstructor]: IllegalStateException: boom!");
assertEquals(1, pe.getErrorMessages().size());
assertEquals(IllegalStateException.class, pe.getCause().getClass());
assertEquals(
IllegalStateException.class, Messages.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(), "[Guice/ErrorInjectingConstructor]: IOException: boom!");
assertEquals(1, pe.getErrorMessages().size());
assertEquals(IOException.class, pe.getCause().getClass());
assertEquals(IOException.class, Messages.getOnlyCause(pe.getErrorMessages()).getClass());
}
}
public void testCustomProvidersRuntimeException() {
Injector injector =
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bind(Exploder.class)
.toProvider(
new Provider<Exploder>() {
@Override
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) [Guice/ErrorInCustomProvider]: IllegalStateException: boom!");
assertEquals(1, pe.getErrorMessages().size());
assertEquals(IllegalStateException.class, pe.getCause().getClass());
assertEquals(
IllegalStateException.class, Messages.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) [Guice/ErrorInCustomProvider]: IllegalStateException: boom!");
assertEquals(1, pe.getErrorMessages().size());
assertEquals(IllegalStateException.class, pe.getCause().getClass());
assertEquals(
IllegalStateException.class, Messages.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) [Guice/ErrorInCustomProvider]: IOException: boom!");
assertEquals(1, pe.getErrorMessages().size());
assertEquals(IOException.class, pe.getCause().getClass());
assertEquals(IOException.class, Messages.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) {}
}
}
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