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/*
* Copyright (C) 2006 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.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import junit.framework.TestCase;
/** @author jessewilson@google.com (Jesse Wilson) */
public class BindingOrderTest extends TestCase {
public void testBindingOutOfOrder() {
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bind(BoundFirst.class);
bind(BoundSecond.class).to(BoundSecondImpl.class);
}
});
}
public static class BoundFirst {
@Inject
public BoundFirst(BoundSecond boundSecond) {}
}
interface BoundSecond {}
static class BoundSecondImpl implements BoundSecond {}
public void testBindingOrderAndScopes() {
Injector injector =
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
bind(A.class);
bind(B.class).asEagerSingleton();
}
});
assertSame(injector.getInstance(A.class).b, injector.getInstance(A.class).b);
}
public void testBindingWithExtraThreads() throws InterruptedException {
final CountDownLatch ready = new CountDownLatch(1);
final CountDownLatch done = new CountDownLatch(1);
final AtomicReference<B> ref = new AtomicReference<>();
final Object createsAThread =
new Object() {
@Inject
void createAnotherThread(final Injector injector) {
new Thread() {
@Override
public void run() {
ready.countDown();
A a = injector.getInstance(A.class);
ref.set(a.b);
done.countDown();
}
}.start();
// to encourage collisions, we make sure the other thread is running before returning
try {
ready.await();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
};
Guice.createInjector(
new AbstractModule() {
@Override
protected void configure() {
requestInjection(createsAThread);
bind(A.class).toInstance(new A());
}
});
done.await();
assertNotNull(ref.get());
}
static class A {
@Inject B b;
}
static class B {}
}
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