A suite of tests for duplicate bindings. @author sameb@google.com (Sam Berlin)
| 41 | * @author sameb@google.com (Sam Berlin) |
| 42 | */ |
| 43 | public class DuplicateBindingsTest extends TestCase { |
| 44 | |
| 45 | private FooImpl foo = new FooImpl(); |
| 46 | private Provider<Foo> pFoo = Providers.<Foo>of(new FooImpl()); |
| 47 | private Class<? extends Provider<? extends Foo>> pclFoo = FooProvider.class; |
| 48 | private Class<? extends Foo> clFoo = FooImpl.class; |
| 49 | private Constructor<FooImpl> cFoo = FooImpl.cxtor(); |
| 50 | |
| 51 | public void testDuplicateBindingsAreIgnored() { |
| 52 | Injector injector = |
| 53 | Guice.createInjector( |
| 54 | new SimpleModule(foo, pFoo, pclFoo, clFoo, cFoo), |
| 55 | new SimpleModule(foo, pFoo, pclFoo, clFoo, cFoo)); |
| 56 | List<Key<?>> bindings = Lists.newArrayList(injector.getAllBindings().keySet()); |
| 57 | removeBasicBindings(bindings); |
| 58 | |
| 59 | // Ensure only one binding existed for each type. |
| 60 | assertTrue(bindings.remove(Key.get(Foo.class, named("instance")))); |
| 61 | assertTrue(bindings.remove(Key.get(Foo.class, named("pInstance")))); |
| 62 | assertTrue(bindings.remove(Key.get(Foo.class, named("pKey")))); |
| 63 | assertTrue(bindings.remove(Key.get(Foo.class, named("linkedKey")))); |
| 64 | assertTrue(bindings.remove(Key.get(FooImpl.class))); |
| 65 | assertTrue(bindings.remove(Key.get(Foo.class, named("constructor")))); |
| 66 | assertTrue(bindings.remove(Key.get(FooProvider.class))); // JIT binding |
| 67 | assertTrue(bindings.remove(Key.get(Foo.class, named("providerMethod")))); |
| 68 | |
| 69 | assertEquals(bindings.toString(), 0, bindings.size()); |
| 70 | } |
| 71 | |
| 72 | public void testElementsDeduplicate() { |
| 73 | List<Element> elements = |
| 74 | Elements.getElements( |
| 75 | new SimpleModule(foo, pFoo, pclFoo, clFoo, cFoo), |
| 76 | new SimpleModule(foo, pFoo, pclFoo, clFoo, cFoo)); |
| 77 | assertEquals(14, elements.size()); |
| 78 | assertEquals(7, new LinkedHashSet<Element>(elements).size()); |
| 79 | } |
| 80 | |
| 81 | public void testProviderMethodsFailIfInstancesDiffer() { |
| 82 | try { |
| 83 | Guice.createInjector(new FailingProviderModule(), new FailingProviderModule()); |
| 84 | fail("should have failed"); |
| 85 | } catch (CreationException ce) { |
| 86 | assertContains( |
| 87 | ce.getMessage(), |
| 88 | "DuplicateBindingsTest$Foo was bound multiple times.", |
| 89 | "1 : DuplicateBindingsTest$FailingProviderModule.foo", |
| 90 | "2 : DuplicateBindingsTest$FailingProviderModule.foo"); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | public void testSameScopeInstanceIgnored() { |
| 95 | Guice.createInjector( |
| 96 | new ScopedModule(Scopes.SINGLETON, foo, pFoo, pclFoo, clFoo, cFoo), |
| 97 | new ScopedModule(Scopes.SINGLETON, foo, pFoo, pclFoo, clFoo, cFoo)); |
| 98 | |
| 99 | Guice.createInjector( |
| 100 | new ScopedModule(Scopes.NO_SCOPE, foo, pFoo, pclFoo, clFoo, cFoo), |