Add test for spring module including another guice module

This test is from a PR by @twicksell, but modified to run without
any changes in spring-guice. See gh-12 for discussion.

src/test/java/org/springframework/guice/InjectorFactoryTests.java

@@ -11,6 +11,7 @@ import org.springframework.guice.annotation.ModuleRegistryConfiguration;
 import org.springframework.guice.injector.InjectorFactory;
 
 import com.google.inject.Guice;
+import com.google.inject.Module;
 
 public class InjectorFactoryTests  {
     

src/test/java/org/springframework/guice/module/SpringModuleGuiceBindingAwareTests.java

@@ -0,0 +1,123 @@
+package org.springframework.guice.module;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
+
+import javax.inject.Inject;
+
+import org.junit.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.guice.annotation.EnableGuiceModules;
+import org.springframework.guice.injector.SpringInjector;
+import org.springframework.test.util.AopTestUtils;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Injector;
+import com.google.inject.Scopes;
+import com.google.inject.util.Providers;
+
+public class SpringModuleGuiceBindingAwareTests {
+
+	@Test
+	public void testAllDependenciesInjectedAndLifeycleMethodsCalledOnce() {
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
+		context.register(GuiceProjectWithSpringLibraryTestSpringConfig.class, SimpleGuiceModule.class);
+		context.refresh();
+		Injector injector = new SpringInjector(context);
+
+		// check guice provided bindings
+		assertNotNull(injector.getInstance(GuiceDependency1.class));
+		assertNotNull(injector.getInstance(IGuiceDependency1.class));
+
+		// check spring bindings as interface
+		ISpringBean springBean = injector.getInstance(ISpringBean.class);
+		assertNotNull(springBean);
+		assertNotNull(springBean.getDep1());
+		assertNotNull(springBean.getDep2());
+		assertNotNull(springBean.getDep3());
+
+		// check binding equality
+		assertSame(injector.getInstance(IGuiceDependency1.class), AopTestUtils.getTargetObject(springBean.getDep1()));
+		assertSame(injector.getInstance(IGuiceDependency2.class), AopTestUtils.getTargetObject(springBean.getDep2()));
+		assertSame(injector.getInstance(IGuiceDependency3.class), AopTestUtils.getTargetObject(springBean.getDep3()));
+		
+		context.close();
+	}
+
+	static class SimpleGuiceModule extends AbstractModule {
+
+		@Override
+		protected void configure() {
+			// test normal binding
+			bind(IGuiceDependency1.class).to(GuiceDependency1.class).in(Scopes.SINGLETON);
+			// test instance binding
+			bind(IGuiceDependency2.class).toInstance(new IGuiceDependency2() {
+			});
+			// test provider binding
+			bind(IGuiceDependency3.class).toProvider(Providers.of(new IGuiceDependency3() {
+			}));
+		}
+	}
+
+	@Configuration
+	@EnableGuiceModules
+	static class GuiceProjectWithSpringLibraryTestSpringConfig {
+
+		@Bean
+		public ISpringBean springDefinedSomething(IGuiceDependency1 dependency) {
+			return new SpringBean(dependency);
+		}
+
+	}
+
+	static interface IGuiceDependency1 {
+	}
+
+	static interface IGuiceDependency2 {
+	}
+
+	static interface IGuiceDependency3 {
+	}
+
+	static class GuiceDependency1 implements IGuiceDependency1 {
+	}
+
+	static interface ISpringBean {
+		IGuiceDependency1 getDep1();
+
+		IGuiceDependency2 getDep2();
+
+		IGuiceDependency3 getDep3();
+	}
+
+	static class SpringBean implements ISpringBean {
+
+		private final IGuiceDependency1 dep1;
+		@Inject
+		private IGuiceDependency2 dep2;
+		@Inject
+		private IGuiceDependency3 dep3;
+
+		@Inject
+		public SpringBean(IGuiceDependency1 dependency) {
+			this.dep1 = dependency;
+		}
+
+		@Override
+		public IGuiceDependency1 getDep1() {
+			return dep1;
+		}
+
+		@Override
+		public IGuiceDependency2 getDep2() {
+			return dep2;
+		}
+
+		@Override
+		public IGuiceDependency3 getDep3() {
+			return dep3;
+		}
+	}
+}