Ensure singleton with no interface works

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

@@ -1,5 +1,6 @@
 package org.springframework.guice;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
 import javax.inject.Inject;
@@ -44,6 +45,13 @@ public abstract class AbstractCompleteWiringTests {
 		assertNotNull(injector.getInstance(Service.class));
 	}
 
+	@Test
+	public void getInstanceBoundWithNoInterface() {
+		Baz instance = injector.getInstance(Baz.class);
+		assertNotNull(instance);
+		assertEquals(instance, injector.getInstance(Baz.class));
+	}
+
 	@Test
 	public void getProviderUnbound() {
 		assertNotNull(injector.getProvider(Foo.class).get());
@@ -79,4 +87,12 @@ public abstract class AbstractCompleteWiringTests {
 
 	}
 
+	public static class Baz {
+
+		@Inject
+		public Baz(Service service) {
+		}
+
+	}
+
 }

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

@@ -13,6 +13,8 @@
 
 package org.springframework.guice;
 
+import javax.inject.Singleton;
+
 import com.google.inject.AbstractModule;
 import com.google.inject.Guice;
 import com.google.inject.Injector;
@@ -33,6 +35,7 @@ public class GuiceWiringTests extends AbstractCompleteWiringTests {
 		@Override
 		protected void configure() {
 			bind(Service.class).to(MyService.class);
+			bind(Baz.class).in(Singleton.class);
 		}
 	}
 	

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

@@ -40,6 +40,10 @@ public class SpringModuleWiringTests extends AbstractCompleteWiringTests {
 		public Service service() {
 			return new MyService();
 		}
+		@Bean
+		public Baz baz() {
+			return new Baz(service());
+		}
 	}
 
 }