Examples with Binding com.google.inject.Binding used on opensource projects

Example 41 with Binding

use of com.google.inject.Binding in project roboguice by roboguice.

the class SpiUtils method setModuleTest.

@SuppressWarnings("unchecked")
private static <T> void setModuleTest(Key<Set<T>> setKey, Key<Collection<Provider<T>>> collectionOfProvidersKey, TypeLiteral<?> elementType, Iterable<? extends Module> modules, boolean allowDuplicates, int otherMultibindings, BindResult... results) {
    List<BindResult> bindResults = Lists.newArrayList(results);
    List<Element> elements = Elements.getElements(modules);
    Visitor<T> visitor = new Visitor<T>();
    MultibinderBinding<Set<T>> multibinder = null;
    for (Element element : elements) {
        if (element instanceof Binding && ((Binding) element).getKey().equals(setKey)) {
            multibinder = (MultibinderBinding<Set<T>>) ((Binding) element).acceptTargetVisitor(visitor);
            break;
        }
    }
    assertNotNull(multibinder);
    assertEquals(elementType, multibinder.getElementTypeLiteral());
    List<Object> otherMultibinders = Lists.newArrayList();
    Set<Element> otherContains = new HashSet<Element>();
    List<Element> otherElements = Lists.newArrayList();
    int duplicates = 0;
    Set<IndexedBinding> setOfIndexed = Sets.newHashSet();
    Indexer indexer = new Indexer(null);
    boolean collectionOfProvidersMatch = false;
    for (Element element : elements) {
        boolean contains = multibinder.containsElement(element);
        if (!contains) {
            otherElements.add(element);
        }
        boolean matched = false;
        Key key = null;
        if (element instanceof Binding) {
            Binding binding = (Binding) element;
            if (indexer.isIndexable(binding) && !setOfIndexed.add((IndexedBinding) binding.acceptTargetVisitor(indexer))) {
                duplicates++;
            }
            key = binding.getKey();
            Object visited = binding.acceptTargetVisitor(visitor);
            if (visited != null) {
                matched = true;
                if (visited.equals(multibinder)) {
                    assertTrue(contains);
                } else {
                    otherMultibinders.add(visited);
                }
            }
        }
        if (collectionOfProvidersKey.equals(key)) {
            assertTrue(contains);
            assertFalse(matched);
            collectionOfProvidersMatch = true;
        } else if (!matched && contains) {
            otherContains.add(element);
        }
    }
    if (allowDuplicates) {
        assertEquals("wrong contained elements: " + otherContains, bindResults.size() + 1 + duplicates, otherContains.size());
    } else {
        assertEquals("wrong contained elements: " + otherContains, bindResults.size() + duplicates, otherContains.size());
    }
    assertEquals("other multibindings found: " + otherMultibinders, otherMultibindings, otherMultibinders.size());
    assertTrue(collectionOfProvidersMatch);
    // Validate that we can construct an injector out of the remaining bindings.
    Guice.createInjector(Elements.getModule(otherElements));
}

Example 42 with Binding

use of com.google.inject.Binding in project roboguice by roboguice.

the class SpiUtils method mapInjectorTest.

@SuppressWarnings("unchecked")
private static <T> void mapInjectorTest(Key<T> mapKey, TypeLiteral<?> keyType, TypeLiteral<?> valueType, Iterable<? extends Module> modules, boolean allowDuplicates, int expectedMapBindings, MapResult... results) {
    Injector injector = Guice.createInjector(modules);
    Visitor<T> visitor = new Visitor<T>();
    Binding<T> mapBinding = injector.getBinding(mapKey);
    MapBinderBinding<T> mapbinder = (MapBinderBinding<T>) mapBinding.acceptTargetVisitor(visitor);
    assertNotNull(mapbinder);
    assertEquals(keyType, mapbinder.getKeyTypeLiteral());
    assertEquals(valueType, mapbinder.getValueTypeLiteral());
    assertEquals(allowDuplicates, mapbinder.permitsDuplicates());
    List<Map.Entry<?, Binding<?>>> entries = Lists.newArrayList(mapbinder.getEntries());
    List<MapResult> mapResults = Lists.newArrayList(results);
    assertEquals("wrong entries, expected: " + mapResults + ", but was: " + entries, mapResults.size(), entries.size());
    for (MapResult result : mapResults) {
        Map.Entry<?, Binding<?>> found = null;
        for (Map.Entry<?, Binding<?>> entry : entries) {
            Object key = entry.getKey();
            Binding<?> value = entry.getValue();
            if (key.equals(result.k) && matches(value, result.v)) {
                found = entry;
                break;
            }
        }
        if (found == null) {
            fail("Could not find entry: " + result + " in remaining entries: " + entries);
        } else {
            assertTrue("mapBinder doesn't contain: " + found.getValue(), mapbinder.containsElement(found.getValue()));
            entries.remove(found);
        }
    }
    if (!entries.isEmpty()) {
        fail("Found all entries of: " + mapResults + ", but more were left over: " + entries);
    }
    Key<?> mapOfJavaxProvider = mapKey.ofType(mapOfJavaxProviderOf(keyType, valueType));
    Key<?> mapOfProvider = mapKey.ofType(mapOfProviderOf(keyType, valueType));
    Key<?> mapOfSetOfProvider = mapKey.ofType(mapOfSetOfProviderOf(keyType, valueType));
    Key<?> mapOfSet = mapKey.ofType(mapOf(keyType, setOf(valueType)));
    Key<?> setOfEntry = mapKey.ofType(setOf(entryOfProviderOf(keyType, valueType)));
    boolean entrySetMatch = false;
    boolean mapJavaxProviderMatch = false;
    boolean mapProviderMatch = false;
    boolean mapSetMatch = false;
    boolean mapSetProviderMatch = false;
    List<Object> otherMapBindings = Lists.newArrayList();
    List<Binding> otherMatches = Lists.newArrayList();
    Multimap<Object, IndexedBinding> indexedEntries = MultimapBuilder.hashKeys().hashSetValues().build();
    Indexer indexer = new Indexer(injector);
    int duplicates = 0;
    for (Binding b : injector.getAllBindings().values()) {
        boolean contains = mapbinder.containsElement(b);
        Object visited = b.acceptTargetVisitor(visitor);
        if (visited instanceof MapBinderBinding) {
            if (visited.equals(mapbinder)) {
                assertTrue(contains);
            } else {
                otherMapBindings.add(visited);
            }
        } else if (b.getKey().equals(mapOfProvider)) {
            assertTrue(contains);
            mapProviderMatch = true;
        } else if (b.getKey().equals(mapOfJavaxProvider)) {
            assertTrue(contains);
            mapJavaxProviderMatch = true;
        } else if (b.getKey().equals(mapOfSet)) {
            assertTrue(contains);
            mapSetMatch = true;
        } else if (b.getKey().equals(mapOfSetOfProvider)) {
            assertTrue(contains);
            mapSetProviderMatch = true;
        } else if (b.getKey().equals(setOfEntry)) {
            assertTrue(contains);
            entrySetMatch = true;
            // Validate that this binding is also a MultibinderBinding.
            assertTrue(b.acceptTargetVisitor(visitor) instanceof MultibinderBinding);
        } else if (contains) {
            if (b instanceof ProviderInstanceBinding) {
                ProviderInstanceBinding<?> pib = (ProviderInstanceBinding<?>) b;
                if (pib.getUserSuppliedProvider() instanceof ProviderMapEntry) {
                    // weird casting required to workaround compilation issues with jdk6
                    ProviderMapEntry<?, ?> pme = (ProviderMapEntry<?, ?>) (Provider) pib.getUserSuppliedProvider();
                    Binding<?> valueBinding = injector.getBinding(pme.getValueKey());
                    if (indexer.isIndexable(valueBinding) && !indexedEntries.put(pme.getKey(), valueBinding.acceptTargetVisitor(indexer))) {
                        duplicates++;
                    }
                }
            }
            otherMatches.add(b);
        }
    }
    int sizeOfOther = otherMatches.size();
    if (allowDuplicates) {
        // account for 1 duplicate binding
        sizeOfOther--;
    }
    // account for 1 value & 1 Map.Entry of each expected binding.
    sizeOfOther = sizeOfOther / 2;
    assertEquals("Incorrect other matches: " + otherMatches, mapResults.size() + duplicates, sizeOfOther);
    assertTrue(entrySetMatch);
    assertTrue(mapProviderMatch);
    assertTrue(mapJavaxProviderMatch);
    assertEquals(allowDuplicates, mapSetMatch);
    assertEquals(allowDuplicates, mapSetProviderMatch);
    assertEquals("other MapBindings found: " + otherMapBindings, expectedMapBindings, otherMapBindings.size());
}

Example 43 with Binding

use of com.google.inject.Binding 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 44 with Binding

use of com.google.inject.Binding in project roboguice by roboguice.

the class MultibinderTest method testKeyHashCodesFixedAtInjectionTime.

/**
   * Ensure key hash codes are fixed at injection time, not binding time.
   */
public void testKeyHashCodesFixedAtInjectionTime() {
    Module ab = new AbstractModule() {

        @Override
        protected void configure() {
            Multibinder<List<String>> multibinder = Multibinder.newSetBinder(binder(), listOfStrings);
            List<String> list = Lists.newArrayList();
            multibinder.addBinding().toInstance(list);
            list.add("A");
            list.add("B");
        }
    };
    Injector injector = Guice.createInjector(ab);
    for (Entry<Key<?>, Binding<?>> entry : injector.getAllBindings().entrySet()) {
        Key<?> bindingKey = entry.getKey();
        Key<?> clonedKey;
        if (bindingKey.getAnnotation() != null) {
            clonedKey = Key.get(bindingKey.getTypeLiteral(), bindingKey.getAnnotation());
        } else if (bindingKey.getAnnotationType() != null) {
            clonedKey = Key.get(bindingKey.getTypeLiteral(), bindingKey.getAnnotationType());
        } else {
            clonedKey = Key.get(bindingKey.getTypeLiteral());
        }
        assertEquals(bindingKey, clonedKey);
        assertEquals("Incorrect hashcode for " + bindingKey + " -> " + entry.getValue(), bindingKey.hashCode(), clonedKey.hashCode());
    }
}

Example 45 with Binding

use of com.google.inject.Binding in project roboguice by roboguice.

the class OptionalBinderTest method testKeyHashCodesFixedAtInjectionTime.

/**
   * Ensure key hash codes are fixed at injection time, not binding time.
   */
public void testKeyHashCodesFixedAtInjectionTime() {
    Module m = new AbstractModule() {

        @Override
        protected void configure() {
            OptionalBinder<List<String>> b = OptionalBinder.newOptionalBinder(binder(), listOfStrings);
            List<String> list = Lists.newArrayList();
            b.setDefault().toInstance(list);
            b.setBinding().toInstance(list);
            list.add("A");
            list.add("B");
        }
    };
    Injector injector = Guice.createInjector(m);
    for (Entry<Key<?>, Binding<?>> entry : injector.getAllBindings().entrySet()) {
        Key<?> bindingKey = entry.getKey();
        Key<?> clonedKey;
        if (bindingKey.getAnnotation() != null) {
            clonedKey = Key.get(bindingKey.getTypeLiteral(), bindingKey.getAnnotation());
        } else if (bindingKey.getAnnotationType() != null) {
            clonedKey = Key.get(bindingKey.getTypeLiteral(), bindingKey.getAnnotationType());
        } else {
            clonedKey = Key.get(bindingKey.getTypeLiteral());
        }
        assertEquals(bindingKey, clonedKey);
        assertEquals("Incorrect hashcode for " + bindingKey + " -> " + entry.getValue(), bindingKey.hashCode(), clonedKey.hashCode());
    }
}