Examples of com.google.inject.AbstractModule

com.google.inject.AbstractModule
A support class for {@link Module}s which reduces repetition and results in a more readable configuration. Simply extend this class, implement {@link #configure()}, and call the inherited methods which mirror those found in {@link Binder}. For example:
```
 public class MyModule extends AbstractModule { protected void configure() { bind(Service.class).to(ServiceImpl.class).in(Singleton.class); bind(CreditCardPaymentService.class); bind(PaymentService.class).to(CreditCardPaymentService.class); bindConstant().annotatedWith(Names.named("port")).to(8080); } } 
```
@author crazybob@google.com (Bob Lee)

    assertMapVisitor(Key.get(mapOfString, Abc.class), stringType, stringType, setOf(ab1, b2c), BOTH, true, 0,
        instance("a", "A"), instance("b", "B1"), instance("b", "B2"), instance("c", "C"));
  }


  public void testMapBinderMultimapIsUnmodifiable() {
    Injector injector = Guice.createInjector(new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> mapBinder = MapBinder.newMapBinder(
            binder(), String.class, String.class);
        mapBinder.addBinding("a").toInstance("A");
        mapBinder.permitDuplicates();

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    }
  }


  public void testMapBinderMapForbidsNullKeys() {
    try {
      Guice.createInjector(new AbstractModule() {
        @Override protected void configure() {
          MapBinder.newMapBinder(binder(), String.class, String.class).addBinding(null);
        }
      });
      fail();

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      fail();
    } catch (CreationException expected) {}
  }


  public void testMapBinderMapForbidsNullValues() {
    Injector injector = Guice.createInjector(new AbstractModule() {
      @Override protected void configure() {
        MapBinder.newMapBinder(binder(), String.class, String.class)
            .addBinding("null").toProvider(Providers.<String>of(null));
      }
    });

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      @Override public Integer get() {
        return next++;
      }
    };


    Injector injector = Guice.createInjector(new AbstractModule() {
      @Override protected void configure() {
        MapBinder.newMapBinder(binder(), String.class, Integer.class)
            .addBinding("one").toProvider(counter).asEagerSingleton();
      }
    });

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    assertEquals(1, (int) injector.getInstance(Key.get(mapOfInteger)).get("one"));
  }


  public void testSourceLinesInMapBindings() {
    try {
      Guice.createInjector(new AbstractModule() {
        @Override protected void configure() {
          MapBinder.newMapBinder(binder(), String.class, Integer.class)
              .addBinding("one");
        }
      });

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    }
  }


  /** We just want to make sure that mapbinder's binding depends on the underlying multibinder. */
  public void testMultibinderDependencies() {
    Injector injector = Guice.createInjector(new AbstractModule() {
      @Override protected void configure() {
        MapBinder<Integer, String> mapBinder
            = MapBinder.newMapBinder(binder(), Integer.class, String.class);
        mapBinder.addBinding(1).toInstance("A");
        mapBinder.addBinding(2).to(Key.get(String.class, Names.named("b")));

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    return elements;
  }


  /** We just want to make sure that mapbinder's binding depends on the underlying multibinder. */
  public void testMultibinderDependenciesInToolStage() {
    Injector injector = Guice.createInjector(Stage.TOOL, new AbstractModule() {
      @Override protected void configure() {
          MapBinder<Integer, String> mapBinder
              = MapBinder.newMapBinder(binder(), Integer.class, String.class);
          mapBinder.addBinding(1).toInstance("A");
          mapBinder.addBinding(2).to(Key.get(String.class, Names.named("b")));

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   * Our implementation maintains order, but doesn't guarantee it in the API spec.
   * TODO: specify the iteration order?
   */
  public void testBindOrderEqualsIterationOrder() {
    Injector injector = Guice.createInjector(
        new AbstractModule() {
          @Override protected void configure() {
            MapBinder<String, String> mapBinder
                = MapBinder.newMapBinder(binder(), String.class, String.class);
            mapBinder.addBinding("leonardo").toInstance("blue");
            mapBinder.addBinding("donatello").toInstance("purple");
            install(new AbstractModule() {
              @Override protected void configure() {
                MapBinder.newMapBinder(binder(), String.class, String.class)
                    .addBinding("michaelangelo").toInstance("orange");
              }
            });
          }
        },
        new AbstractModule() {
          @Override protected void configure() {
            MapBinder.newMapBinder(binder(), String.class, String.class)
                .addBinding("raphael").toInstance("red");
          }
        });

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  /**
   * With overrides, we should get the union of all map bindings.
   */
  public void testModuleOverrideAndMapBindings() {
    Module ab = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(binder(), String.class, String.class);
        multibinder.addBinding("a").toInstance("A");
        multibinder.addBinding("b").toInstance("B");
      }
    };
    Module cd = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(binder(), String.class, String.class);
        multibinder.addBinding("c").toInstance("C");
        multibinder.addBinding("d").toInstance("D");
      }
    };
    Module ef = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(binder(), String.class, String.class);
        multibinder.addBinding("e").toInstance("E");
        multibinder.addBinding("f").toInstance("F");
      }

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        instance("a", "A"), instance("b", "B"), instance("c", "C"), instance("d", "D"), instance(
            "e", "E"), instance("f", "F"));
  }
  
  public void testDeduplicateMapBindings() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> mapbinder =
            MapBinder.newMapBinder(binder(), String.class, String.class);
        mapbinder.addBinding("a").toInstance("A");
        mapbinder.addBinding("a").toInstance("A");

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