Examples with InstanceBinding com.google.inject.spi.InstanceBinding used on opensource projects

Example 6 with InstanceBinding

use of com.google.inject.spi.InstanceBinding in project guice by google.

the class MultibinderTest method testBindingKeysFixedOnReturnFromGetElements.

/** Ensure bindings do not rehash their keys once returned from {@link Elements#getElements}. */
public void testBindingKeysFixedOnReturnFromGetElements() {
    final List<String> list = Lists.newArrayList();
    Module ab = new AbstractModule() {

        @Override
        protected void configure() {
            Multibinder<List<String>> multibinder = Multibinder.newSetBinder(binder(), listOfStrings);
            multibinder.addBinding().toInstance(list);
            list.add("A");
            list.add("B");
        }
    };
    InstanceBinding<?> binding = Iterables.getOnlyElement(Iterables.filter(Elements.getElements(ab), InstanceBinding.class));
    Key<?> keyBefore = binding.getKey();
    assertEquals(listOfStrings, keyBefore.getTypeLiteral());
    list.add("C");
    Key<?> keyAfter = binding.getKey();
    assertSame(keyBefore, keyAfter);
}

Example 7 with InstanceBinding

use of com.google.inject.spi.InstanceBinding in project roboguice by roboguice.

the class MultibinderTest method testSetAndMapValueAreDistinctInSpi.

// See issue 670
public void testSetAndMapValueAreDistinctInSpi() {
    Injector injector = Guice.createInjector(new AbstractModule() {

        @Override
        protected void configure() {
            Multibinder.newSetBinder(binder(), String.class).addBinding().toInstance("A");
            MapBinder.newMapBinder(binder(), String.class, String.class).addBinding("B").toInstance("b");
            OptionalBinder.newOptionalBinder(binder(), String.class).setDefault().toInstance("C");
        }
    });
    Collector collector = new Collector();
    Binding<Map<String, String>> mapbinding = injector.getBinding(Key.get(mapOfStringString));
    mapbinding.acceptTargetVisitor(collector);
    assertNotNull(collector.mapbinding);
    Binding<Set<String>> setbinding = injector.getBinding(Key.get(setOfString));
    setbinding.acceptTargetVisitor(collector);
    assertNotNull(collector.setbinding);
    Binding<Optional<String>> optionalbinding = injector.getBinding(Key.get(optionalOfString));
    optionalbinding.acceptTargetVisitor(collector);
    assertNotNull(collector.optionalbinding);
    // There should only be three instance bindings for string types
    // (but because of the OptionalBinder, there's 2 ProviderInstanceBindings also).
    // We also know the InstanceBindings will be in the order: A, b, C because that's
    // how we bound them, and binding order is preserved.
    List<Binding<String>> bindings = FluentIterable.from(injector.findBindingsByType(stringType)).filter(Predicates.instanceOf(InstanceBinding.class)).toList();
    assertEquals(bindings.toString(), 3, bindings.size());
    Binding<String> a = bindings.get(0);
    Binding<String> b = bindings.get(1);
    Binding<String> c = bindings.get(2);
    assertEquals("A", ((InstanceBinding<String>) a).getInstance());
    assertEquals("b", ((InstanceBinding<String>) b).getInstance());
    assertEquals("C", ((InstanceBinding<String>) c).getInstance());
    // Make sure the correct elements belong to their own sets.
    assertFalse(collector.mapbinding.containsElement(a));
    assertTrue(collector.mapbinding.containsElement(b));
    assertFalse(collector.mapbinding.containsElement(c));
    assertTrue(collector.setbinding.containsElement(a));
    assertFalse(collector.setbinding.containsElement(b));
    assertFalse(collector.setbinding.containsElement(c));
    assertFalse(collector.optionalbinding.containsElement(a));
    assertFalse(collector.optionalbinding.containsElement(b));
    assertTrue(collector.optionalbinding.containsElement(c));
}

Example 8 with InstanceBinding

use of com.google.inject.spi.InstanceBinding in project roboguice by roboguice.

the class MultibinderTest method testMultibinderDependenciesInToolStage.

/**
   * We just want to make sure that multibinder's binding depends on each of its values. We don't
   * really care about the underlying structure of those bindings, which are implementation details.
   */
public void testMultibinderDependenciesInToolStage() {
    Injector injector = Guice.createInjector(Stage.TOOL, new AbstractModule() {

        protected void configure() {
            Multibinder<String> multibinder = Multibinder.newSetBinder(binder(), String.class);
            multibinder.addBinding().toInstance("A");
            multibinder.addBinding().to(Key.get(String.class, Names.named("b")));
            bindConstant().annotatedWith(Names.named("b")).to("B");
        }
    });
    Binding<Set<String>> binding = injector.getBinding(new Key<Set<String>>() {
    });
    HasDependencies withDependencies = (HasDependencies) binding;
    InstanceBinding<?> instanceBinding = null;
    LinkedKeyBinding<?> linkedBinding = null;
    // the Key of @Named("b") String=B
    for (Dependency<?> dependency : withDependencies.getDependencies()) {
        Binding<?> b = injector.getBinding(dependency.getKey());
        if (b instanceof InstanceBinding) {
            if (instanceBinding != null) {
                fail("Already have an instance binding of: " + instanceBinding + ", and now want to add: " + b);
            } else {
                instanceBinding = (InstanceBinding) b;
            }
        } else if (b instanceof LinkedKeyBinding) {
            if (linkedBinding != null) {
                fail("Already have a linked binding of: " + linkedBinding + ", and now want to add: " + b);
            } else {
                linkedBinding = (LinkedKeyBinding) b;
            }
        } else {
            fail("Unexpected dependency of: " + dependency);
        }
    }
    assertNotNull(instanceBinding);
    assertNotNull(linkedBinding);
    assertEquals("A", instanceBinding.getInstance());
    assertEquals(Key.get(String.class, Names.named("b")), linkedBinding.getLinkedKey());
}

Example 9 with InstanceBinding

use of com.google.inject.spi.InstanceBinding in project roboguice by roboguice.

the class MapBinderTest method recurseForDependencies.

private Set<String> recurseForDependencies(Injector injector, HasDependencies hasDependencies) {
    Set<String> elements = Sets.newHashSet();
    for (Dependency<?> dependency : hasDependencies.getDependencies()) {
        Binding<?> binding = injector.getBinding(dependency.getKey());
        HasDependencies deps = (HasDependencies) binding;
        if (binding instanceof InstanceBinding) {
            elements.add((String) ((InstanceBinding<?>) binding).getInstance());
        } else {
            elements.addAll(recurseForDependencies(injector, deps));
        }
    }
    return elements;
}

Example 10 with InstanceBinding

use of com.google.inject.spi.InstanceBinding in project roboguice by roboguice.

the class OptionalBinderTest method recurseForDependencies.

@SuppressWarnings("rawtypes")
private Set<String> recurseForDependencies(Injector injector, HasDependencies hasDependencies) {
    Set<String> elements = Sets.newHashSet();
    for (Dependency<?> dependency : hasDependencies.getDependencies()) {
        Binding<?> binding = injector.getBinding(dependency.getKey());
        HasDependencies deps = (HasDependencies) binding;
        if (binding instanceof InstanceBinding) {
            elements.add((String) ((InstanceBinding) binding).getInstance());
        } else {
            elements.addAll(recurseForDependencies(injector, deps));
        }
    }
    return elements;
}