test/com/google/inject/ImplicitBindingTest.java

/**
 * 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 junit.framework.TestCase;

/**
 * @author crazybob@google.com (Bob Lee)
 */
public class ImplicitBindingTest extends TestCase {

  public void testCircularDependency() throws ContainerCreationException {
    ContainerBuilder builder = new ContainerBuilder();
    Container container = builder.create();
    Foo foo = container.getInstance(Foo.class);
    assertSame(foo, foo.bar.foo);
  }

  static class Foo {
    @Inject Bar bar;
  }

  static class Bar {
    final Foo foo;
    @Inject
    public Bar(Foo foo) {
      this.foo = foo;
    }
  }
}