| /** |
| * Copyright (C) 2006 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.inject; |
| |
| import static com.google.inject.Asserts.assertContains; |
| import static com.google.inject.Asserts.assertEqualsBothWays; |
| import static com.google.inject.Asserts.assertNotSerializable; |
| import com.google.inject.name.Named; |
| import com.google.inject.name.Names; |
| import com.google.inject.util.Types; |
| import java.io.IOException; |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import static java.lang.annotation.RetentionPolicy.RUNTIME; |
| import java.lang.annotation.Target; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.lang.reflect.TypeVariable; |
| import java.util.List; |
| import java.util.Map; |
| import junit.framework.TestCase; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class KeyTest extends TestCase { |
| |
| public void foo(List<String> a, List<String> b) {} |
| public void bar(Provider<List<String>> a) {} |
| @Foo String baz; |
| List<? extends CharSequence> wildcardExtends; |
| |
| public void testOfType() { |
| Key<Object> k = Key.get(Object.class, Foo.class); |
| Key<Integer> ki = k.ofType(Integer.class); |
| assertEquals(Integer.class, ki.getRawType()); |
| assertEquals(Foo.class, ki.getAnnotationType()); |
| } |
| |
| public void testKeyEquality() { |
| Key<List<String>> a = new Key<List<String>>(Foo.class) {}; |
| Key<List<String>> b = Key.get(new TypeLiteral<List<String>>() {}, Foo.class); |
| assertEqualsBothWays(a, b); |
| } |
| |
| public void testProviderKey() throws NoSuchMethodException { |
| Key<?> actual = Key.get(getClass().getMethod("foo", List.class, List.class) |
| .getGenericParameterTypes()[0]).providerKey(); |
| Key<?> expected = Key.get(getClass().getMethod("bar", Provider.class) |
| .getGenericParameterTypes()[0]); |
| assertEqualsBothWays(expected, actual); |
| assertEquals(expected.toString(), actual.toString()); |
| } |
| |
| public void testTypeEquality() throws Exception { |
| Method m = getClass().getMethod("foo", List.class, List.class); |
| Type[] types = m.getGenericParameterTypes(); |
| assertEquals(types[0], types[1]); |
| Key<List<String>> k = new Key<List<String>>() {}; |
| assertEquals(types[0], k.getTypeLiteral().getType()); |
| assertFalse(types[0].equals( |
| new Key<List<Integer>>() {}.getTypeLiteral().getType())); |
| } |
| |
| /** |
| * Key canonicalizes {@link int.class} to {@code Integer.class}, and |
| * won't expose wrapper types. |
| */ |
| public void testPrimitivesAndWrappersAreEqual() { |
| Class[] primitives = new Class[] { |
| boolean.class, byte.class, short.class, int.class, long.class, |
| float.class, double.class, char.class, void.class |
| }; |
| Class[] wrappers = new Class[] { |
| Boolean.class, Byte.class, Short.class, Integer.class, Long.class, |
| Float.class, Double.class, Character.class, Void.class |
| }; |
| |
| for (int t = 0; t < primitives.length; t++) { |
| @SuppressWarnings("unchecked") |
| Key primitiveKey = Key.get(primitives[t]); |
| @SuppressWarnings("unchecked") |
| Key wrapperKey = Key.get(wrappers[t]); |
| |
| assertEquals(primitiveKey, wrapperKey); |
| assertEquals(wrappers[t], primitiveKey.getRawType()); |
| assertEquals(wrappers[t], wrapperKey.getRawType()); |
| assertEquals(wrappers[t], primitiveKey.getTypeLiteral().getType()); |
| assertEquals(wrappers[t], wrapperKey.getTypeLiteral().getType()); |
| } |
| |
| Key<Integer> integerKey = Key.get(Integer.class); |
| Key<Integer> integerKey2 = Key.get(Integer.class, Named.class); |
| Key<Integer> integerKey3 = Key.get(Integer.class, Names.named("int")); |
| |
| Class<Integer> intClassLiteral = int.class; |
| assertEquals(integerKey, Key.get(intClassLiteral)); |
| assertEquals(integerKey2, Key.get(intClassLiteral, Named.class)); |
| assertEquals(integerKey3, Key.get(intClassLiteral, Names.named("int"))); |
| |
| Type intType = int.class; |
| assertEquals(integerKey, Key.get(intType)); |
| assertEquals(integerKey2, Key.get(intType, Named.class)); |
| assertEquals(integerKey3, Key.get(intType, Names.named("int"))); |
| |
| TypeLiteral<Integer> intTypeLiteral = TypeLiteral.get(int.class); |
| assertEquals(integerKey, Key.get(intTypeLiteral)); |
| assertEquals(integerKey2, Key.get(intTypeLiteral, Named.class)); |
| assertEquals(integerKey3, Key.get(intTypeLiteral, Names.named("int"))); |
| } |
| |
| public void testSerialization() throws IOException, NoSuchFieldException { |
| assertNotSerializable(Key.get(B.class)); |
| assertNotSerializable(Key.get(B.class, Names.named("bee"))); |
| assertNotSerializable(Key.get(B.class, Named.class)); |
| assertNotSerializable(Key.get(B[].class)); |
| assertNotSerializable(Key.get(new TypeLiteral<Map<List<B>, B>>() {})); |
| assertNotSerializable(Key.get(new TypeLiteral<List<B[]>>() {})); |
| assertNotSerializable(Key.get(Types.listOf(Types.subtypeOf(CharSequence.class)))); |
| } |
| |
| public void testEqualityOfAnnotationTypesAndInstances() throws NoSuchFieldException { |
| Foo instance = getClass().getDeclaredField("baz").getAnnotation(Foo.class); |
| Key<String> keyWithInstance = Key.get(String.class, instance); |
| Key<String> keyWithLiteral = Key.get(String.class, Foo.class); |
| assertEqualsBothWays(keyWithInstance, keyWithLiteral); |
| } |
| |
| public void testNonBindingAnnotationOnKey() { |
| try { |
| Key.get(String.class, Deprecated.class); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| assertContains(expected.getMessage(), "java.lang.Deprecated is not a binding annotation. ", |
| "Please annotate it with @BindingAnnotation."); |
| } |
| } |
| |
| public void testBindingAnnotationWithoutRuntimeRetention() { |
| try { |
| Key.get(String.class, Bar.class); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| assertContains(expected.getMessage(), Bar.class.getName() + " is not retained at runtime.", |
| "Please annotate it with @Retention(RUNTIME)."); |
| } |
| } |
| |
| <T> void parameterizedWithVariable(List<T> typeWithVariables) {} |
| |
| /** Test for issue 186 */ |
| public void testCannotCreateKeysWithTypeVariables() throws NoSuchMethodException { |
| ParameterizedType listOfTType = (ParameterizedType) getClass().getDeclaredMethod( |
| "parameterizedWithVariable", List.class).getGenericParameterTypes()[0]; |
| |
| TypeLiteral<?> listOfT = TypeLiteral.get(listOfTType); |
| try { |
| Key.get(listOfT); |
| fail("Guice should not allow keys for java.util.List<T>"); |
| } catch (ConfigurationException e) { |
| assertContains(e.getMessage(), |
| "java.util.List<T> cannot be used as a key; It is not fully specified."); |
| } |
| |
| TypeVariable tType = (TypeVariable) listOfTType.getActualTypeArguments()[0]; |
| TypeLiteral<?> t = TypeLiteral.get(tType); |
| try { |
| Key.get(t); |
| fail("Guice should not allow keys for T"); |
| } catch (ConfigurationException e) { |
| assertContains(e.getMessage(), |
| "T cannot be used as a key; It is not fully specified."); |
| } |
| } |
| |
| interface B {} |
| |
| @Retention(RUNTIME) |
| @Target({ ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD }) |
| @BindingAnnotation @interface Foo {} |
| |
| @Target({ ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD }) |
| @BindingAnnotation @interface Bar {} |
| |
| class HasTypeParameters<A, B extends List<A> & Runnable, C extends Runnable> { |
| A a; B b; C c; |
| } |
| } |