SuperclassTest.java example

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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 junit.framework.TestCase;

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

  public void testSuperclassInjection() throws CreationException {
    Injector injector =
        Guice.createInjector(
            new AbstractModule() {
              @Override
              protected void configure() {
                bind(Foo.class);
              }
            });

    Provider<Sub> creator = injector.getProvider(Sub.class);
    Sub sub = creator.get();
    sub = creator.get();
    sub = creator.get();
    sub = creator.get();
    sub = creator.get();
    assertNotNull(sub.field);
    assertNotNull(sub.fromMethod);
  }

  abstract static class Super {
    @Inject Foo field;

    Foo fromMethod;

    @Inject
    void setC(Foo foo) {
      fromMethod = foo;
    }
  }

  static class Sub extends Super {}

  static class Foo {}
}