diff options
Diffstat (limited to 'sangria-lazy/src/test/java')
-rw-r--r-- | sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazySingletonTest.java | 83 | ||||
-rw-r--r-- | sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazyTest.java | 243 |
2 files changed, 326 insertions, 0 deletions
diff --git a/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazySingletonTest.java b/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazySingletonTest.java new file mode 100644 index 0000000..69fabce --- /dev/null +++ b/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazySingletonTest.java @@ -0,0 +1,83 @@ +/**************************************************************************** + * Sangria * + * Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> * + * * + * 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.tavianator.sangria.lazy; + +import javax.inject.Inject; +import javax.inject.Provider; + +import com.google.inject.Guice; +import com.google.inject.Injector; +import com.google.inject.Module; +import com.google.inject.Stage; +import org.junit.Test; + +import static org.hamcrest.Matchers.*; +import static org.junit.Assert.*; + +/** + * Tests for the {@link LazySingleton} scope. + * + * @author Tavian Barnes (tavianator@tavianator.com) + * @version 1.2 + * @since 1.2 + */ +public class LazySingletonTest { + @LazySingleton + private static class Scoped { + static final ThreadLocal<Integer> INSTANCES = new ThreadLocal<Integer>() { + @Override + protected Integer initialValue() { + return 0; + } + }; + + @Inject + Scoped() { + INSTANCES.set(INSTANCES.get() + 1); + } + } + + @Test + public void testDevelopment() { + test(Stage.DEVELOPMENT, new SangriaLazyModule()); + } + + @Test + public void testProduction() { + test(Stage.PRODUCTION, new SangriaLazyModule()); + } + + @Test + public void testDuplicateModule() { + test(Stage.PRODUCTION, new SangriaLazyModule(), new SangriaLazyModule()); + } + + private void test(Stage stage, Module... modules) { + int before = Scoped.INSTANCES.get(); + + Injector injector = Guice.createInjector(stage, modules); + Provider<Scoped> provider = injector.getProvider(Scoped.class); + assertThat(Scoped.INSTANCES.get(), equalTo(before)); + + Scoped instance = provider.get(); + assertThat(Scoped.INSTANCES.get(), equalTo(before + 1)); + + assertThat(provider.get(), sameInstance(instance)); + assertThat(Scoped.INSTANCES.get(), equalTo(before + 1)); + } +} diff --git a/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazyTest.java b/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazyTest.java new file mode 100644 index 0000000..ff63c03 --- /dev/null +++ b/sangria-lazy/src/test/java/com/tavianator/sangria/lazy/LazyTest.java @@ -0,0 +1,243 @@ +/**************************************************************************** + * Sangria * + * Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> * + * * + * 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.tavianator.sangria.lazy; + +import java.lang.annotation.Retention; +import java.lang.annotation.RetentionPolicy; +import java.util.*; +import javax.inject.Inject; +import javax.inject.Qualifier; + +import com.google.inject.AbstractModule; +import com.google.inject.Binding; +import com.google.inject.CreationException; +import com.google.inject.Guice; +import com.google.inject.Injector; +import com.google.inject.Key; +import com.google.inject.Module; +import com.google.inject.spi.DefaultBindingTargetVisitor; +import com.google.inject.spi.Element; +import com.google.inject.spi.Elements; +import org.junit.Test; + +import static org.hamcrest.Matchers.*; +import static org.junit.Assert.*; + +/** + * Tests for {@link Lazy} injection. + * + * @author Tavian Barnes (tavianator@tavianator.com) + * @version 1.2 + * @since 1.2 + */ +public class LazyTest { + @Retention(RetentionPolicy.RUNTIME) + @Qualifier + private @interface Simple { + } + + private interface Abstract { + } + + private static class Concrete implements Abstract { + static final ThreadLocal<Integer> INSTANCES = new ThreadLocal<Integer>() { + @Override + protected Integer initialValue() { + return 0; + } + }; + + @Inject + Concrete() { + INSTANCES.set(INSTANCES.get() + 1); + } + } + + private static class HasConcrete { + @Inject Lazy<Concrete> lazy; + } + + private static class HasQualifiedAbstract { + @Inject @Simple Lazy<Abstract> lazy; + } + + @Test + public void testJustInTime() { + testHasConcrete(Guice.createInjector()); + } + + @Test + public void testExplicitBindings() { + testHasConcrete(Guice.createInjector(new AbstractModule() { + @Override + protected void configure() { + binder().requireExplicitBindings(); + + bind(Concrete.class); + LazyBinder.create(binder()) + .bind(Concrete.class); + } + })); + } + + private void testHasConcrete(Injector injector) { + int before = Concrete.INSTANCES.get(); + + HasConcrete hasConcrete = new HasConcrete(); + injector.injectMembers(hasConcrete); + assertThat(Concrete.INSTANCES.get(), equalTo(before)); + + Concrete instance = hasConcrete.lazy.get(); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + Concrete instance2 = hasConcrete.lazy.get(); + assertThat(instance2, sameInstance(instance)); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + HasConcrete hasConcrete2 = new HasConcrete(); + injector.injectMembers(hasConcrete2); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + Concrete instance3 = hasConcrete2.lazy.get(); + assertThat(instance3, not(sameInstance(instance))); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 2)); + } + + @Test + public void testBindSeparately() { + testQualifiedAbstract(Guice.createInjector(new AbstractModule() { + @Override + protected void configure() { + bind(Abstract.class) + .annotatedWith(Simple.class) + .to(Concrete.class); + + LazyBinder.create(binder()) + .bind(Abstract.class) + .annotatedWith(Simple.class); + } + })); + } + + @Test + public void testBindTogether() { + testQualifiedAbstract(Guice.createInjector(new AbstractModule() { + @Override + protected void configure() { + LazyBinder.create(binder()) + .bind(Abstract.class) + .annotatedWith(Simple.class) + .to(Concrete.class); + } + })); + } + + private void testQualifiedAbstract(Injector injector) { + int before = Concrete.INSTANCES.get(); + + HasQualifiedAbstract hasQualifiedAbstract = new HasQualifiedAbstract(); + injector.injectMembers(hasQualifiedAbstract); + assertThat(Concrete.INSTANCES.get(), equalTo(before)); + + Abstract instance = hasQualifiedAbstract.lazy.get(); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + Abstract instance2 = hasQualifiedAbstract.lazy.get(); + assertThat(instance2, sameInstance(instance2)); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + HasQualifiedAbstract hasQualifiedAbstract2 = new HasQualifiedAbstract(); + injector.injectMembers(hasQualifiedAbstract2); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 1)); + + Abstract instance3 = hasQualifiedAbstract2.lazy.get(); + assertThat(instance3, not(sameInstance(instance))); + assertThat(Concrete.INSTANCES.get(), equalTo(before + 2)); + } + + @Test(expected = CreationException.class) + public void testMissingBinding() { + Guice.createInjector(new AbstractModule() { + @Override + protected void configure() { + LazyBinder.create(binder()) + .bind(Abstract.class); + } + }); + } + + @Test(expected = CreationException.class) + public void testMissingQualifiedBinding() { + Guice.createInjector(new AbstractModule() { + @Override + protected void configure() { + LazyBinder.create(binder()) + .bind(Abstract.class) + .annotatedWith(Simple.class); + } + }); + } + + private static class TestVisitor<T> extends DefaultBindingTargetVisitor<T, Boolean> implements LazyBindingVisitor<T, Boolean> { + @Override + public Boolean visit(LazyBinding<? extends T> binding) { + assertThat(binding.getTargetKey().equals(new Key<Abstract>(Simple.class) { }), is(true)); + return true; + } + + @Override + protected Boolean visitOther(Binding<? extends T> binding) { + return false; + } + } + + private <T> boolean visit(Binding<T> binding) { + return binding.acceptTargetVisitor(new TestVisitor<T>()); + } + + @Test + public void testExtensionSpi() { + Module module = new AbstractModule() { + @Override + protected void configure() { + // TODO: Expose the SPI for unqualified bindings + LazyBinder.create(binder()) + .bind(Abstract.class) + .annotatedWith(Simple.class) + .to(Concrete.class); + } + }; + + List<Element> elements = Elements.getElements(module); + + int passed = 0; + for (Element element : elements) { + if (element instanceof Binding) { + if (visit((Binding<?>)element)) { + ++passed; + } + } + } + assertThat(passed, equalTo(1)); + + Injector injector = Guice.createInjector(Elements.getModule(elements)); + assertThat(visit(injector.getBinding(new Key<Lazy<Abstract>>(Simple.class) { })), is(true)); + assertThat(visit(injector.getBinding(new Key<Abstract>(Simple.class) { })), is(false)); + assertThat(visit(injector.getBinding(new Key<Concrete>() { })), is(false)); + } +} |