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/**
* Copyright (C) 2008 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.spi;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Provider;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import java.util.Set;
import junit.framework.TestCase;
/**
* @author jessewilson@google.com (Jesse Wilson)
*/
public class HasDependenciesTest extends TestCase {
/**
* When an instance implements HasDependencies, the injected dependencies aren't used.
*/
public void testInstanceWithDependencies() {
Injector injector = Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(A.class).toInstance(new AWithDependencies());
}
});
InstanceBinding<?> binding = (InstanceBinding<?>) injector.getBinding(A.class);
assertEquals(ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class))),
binding.getDependencies());
}
public void testInstanceWithoutDependencies() {
Injector injector = Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(A.class).toInstance(new A());
}
});
InstanceBinding<?> binding = (InstanceBinding<?>) injector.getBinding(A.class);
Dependency<?> onlyDependency = Iterables.getOnlyElement(binding.getDependencies());
assertEquals(Key.get(String.class), onlyDependency.getKey());
}
public void testProvider() {
Injector injector = Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(A.class).toProvider(new ProviderOfA());
}
});
ProviderInstanceBinding<?> binding = (ProviderInstanceBinding<?>) injector.getBinding(A.class);
Dependency<?> onlyDependency = Iterables.getOnlyElement(binding.getDependencies());
assertEquals(Key.get(String.class), onlyDependency.getKey());
}
static class A {
@Inject void injectUnusedDependencies(String unused) {}
}
static class ProviderOfA implements Provider<A> {
@Inject void injectUnusedDependencies(String unused) {}
public A get() {
throw new UnsupportedOperationException();
}
}
static class AWithDependencies extends A implements HasDependencies {
public Set<Dependency<?>> getDependencies() {
return ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class)));
}
}
static class ProviderOfAWithDependencies
extends ProviderOfA implements ProviderWithDependencies<A> {
public Set<Dependency<?>> getDependencies() {
return ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class)));
}
}
}
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