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)

    injector.getInstance(Key.get(mapOfStringProvider, named("de")));
    injector.getInstance(Key.get(mapOfStringJavaxProvider, named("de")));
  }


  public void testMapBinderWithMultipleAnnotationTypeSets() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> abcMapBinder = MapBinder.newMapBinder(
            binder(), String.class, String.class, Abc.class);
        abcMapBinder.addBinding("a").toInstance("A");
        abcMapBinder.addBinding("b").toInstance("B");

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    injector.getInstance(Key.get(mapOfStringProvider, De.class));
    injector.getInstance(Key.get(mapOfStringJavaxProvider, De.class));
  }


  public void testMapBinderWithMultipleTypes() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder.newMapBinder(binder(), String.class, String.class)
            .addBinding("a").toInstance("A");
        MapBinder.newMapBinder(binder(), String.class, Integer.class)
            .addBinding("1").toInstance(1);

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    assertMapVisitor(Key.get(mapOfInteger), stringType, intType, setOf(module), BOTH, false, 1,
        instance("1", 1));
  }


  public void testMapBinderWithEmptyMap() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder.newMapBinder(binder(), String.class, String.class);
      }
    };
    Injector injector = Guice.createInjector(module);

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    assertEquals(Collections.emptyMap(), map);
    assertMapVisitor(Key.get(mapOfString), stringType, stringType, setOf(module), BOTH, false, 0);
  }


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

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    } catch(UnsupportedOperationException expected) {
    }
  }


  public void testMapBinderMapIsLazy() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder.newMapBinder(binder(), String.class, Integer.class)
            .addBinding("num").toProvider(new Provider<Integer>() {
          int nextValue = 1;
          @Override public Integer get() {

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    assertMapVisitor(Key.get(mapOfInteger), stringType, intType, setOf(module), BOTH, false, 0,
        providerInstance("num", 1));
  }


  public void testMapBinderMapForbidsDuplicateKeys() {
    Module module = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(
            binder(), String.class, String.class);
        multibinder.addBinding("a").toInstance("A");
        multibinder.addBinding("a").toInstance("B");

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      assertEquals(1, ce.getErrorMessages().size());
    }
  }


  public void testMapBinderMapPermitDuplicateElements() {
    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");
        multibinder.permitDuplicates();
      }
    };
    Module bc = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(
            binder(), String.class, String.class);
        multibinder.addBinding("b").toInstance("B");
        multibinder.addBinding("c").toInstance("C");

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      @Override
      public int hashCode() {
        return keyPart;
      }
    }
    Module m1 = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, ValueType> multibinder = MapBinder.newMapBinder(
            binder(), String.class, ValueType.class);
        multibinder.addBinding("a").toInstance(new ValueType(1, 2));
      }
    };
    Module m2 = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, ValueType> multibinder = MapBinder.newMapBinder(
            binder(), String.class, ValueType.class);
        multibinder.addBinding("b").toInstance(new ValueType(1, 3));
      }

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    assertEquals(2, map.get("a").dataPart);
    assertEquals(3, map.get("b").dataPart);
  }


  public void testMapBinderMultimap() {
    AbstractModule ab1c = 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("B1");
        multibinder.addBinding("c").toInstance("C");
      }
    };
    AbstractModule b2c = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(
            binder(), String.class, String.class);
        multibinder.addBinding("b").toInstance("B2");
        multibinder.addBinding("c").toInstance("C");

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    assertMapVisitor(Key.get(mapOfString), stringType, stringType, setOf(ab1c, b2c), BOTH, true, 0,
        instance("a", "A"), instance("b", "B1"), instance("b", "B2"), instance("c", "C"));
  }


  public void testMapBinderMultimapWithAnotation() {
    AbstractModule ab1 = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(
            binder(), String.class, String.class, Abc.class);
        multibinder.addBinding("a").toInstance("A");
        multibinder.addBinding("b").toInstance("B1");
      }
    };
    AbstractModule b2c = new AbstractModule() {
      @Override protected void configure() {
        MapBinder<String, String> multibinder = MapBinder.newMapBinder(
            binder(), String.class, String.class, Abc.class);
        multibinder.addBinding("b").toInstance("B2");
        multibinder.addBinding("c").toInstance("C");

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