🚧 Allow binding objects with @Named annotations

diff --git a/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java b/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java
index 5bf2864..7cc41d2 100644 (file)
--- a/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java
+++ b/src/main/java/net/pterodactylus/util/inject/ObjectBinding.java
@@ -1,6 +1,10 @@
 package net.pterodactylus.util.inject;
 
+import com.google.inject.Key;
 import com.google.inject.Module;
+import com.google.inject.name.Names;
+
+import static com.google.inject.name.Names.named;
 
 /**
  * Helper class for Guice configuration.
@@ -25,6 +29,26 @@ public class ObjectBinding {
                        return (binder) -> binder.bind(requestedClass).toInstance(instance);
                }
 
+               public $2<T> named(String name) {
+                       return new $2<>(requestedClass, name);
+               }
+
+       }
+
+       public static class $2<T> {
+
+               private $2(Class<T> requestedClass, String name) {
+                       this.requestedClass = requestedClass;
+                       this.name = name;
+               }
+
+               public Module is(T instance) {
+                       return (binder) -> binder.bind(Key.get(requestedClass, named(name))).toInstance(instance);
+               }
+
+               private final Class<T> requestedClass;
+               private final String name;
+
        }
 
 }

diff --git a/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java b/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java
index 273430a..5f1ada4 100644 (file)
--- a/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java
+++ b/src/test/java/net/pterodactylus/util/inject/ObjectBindingTest.java
@@ -1,11 +1,16 @@
 package net.pterodactylus.util.inject;
 
-import com.google.inject.Guice;
+import com.google.inject.ConfigurationException;
 import com.google.inject.Injector;
-import org.hamcrest.MatcherAssert;
-import org.hamcrest.Matchers;
+import com.google.inject.Key;
+import com.google.inject.name.Names;
 import org.junit.jupiter.api.Test;
 
+import static com.google.inject.Guice.createInjector;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.sameInstance;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
 /**
  * Unit test for {@link ObjectBinding}.
  *
@@ -21,12 +26,28 @@ public class ObjectBindingTest {
        @Test
        public void objectIsBound() {
                TestClass testObject = new TestClass();
-               Injector injector = Guice.createInjector(ObjectBinding.forClass(TestInterface.class).is(testObject));
-               MatcherAssert.assertThat(injector.getInstance(TestInterface.class), Matchers.sameInstance(testObject));
+               Injector injector = createInjector(ObjectBinding.forClass(TestInterface.class).is(testObject));
+               assertThat(injector.getInstance(TestInterface.class), sameInstance(testObject));
        }
 
-       public interface TestInterface { }
+       @Test
+       public void namedObjectIsBound() {
+               TestClass testObject = new TestClass();
+               Injector injector = createInjector(ObjectBinding.forClass(TestInterface.class).named("foo").is(testObject));
+               assertThat(injector.getInstance(Key.get(TestInterface.class, Names.named("foo"))), sameInstance(testObject));
+       }
 
-       public static class TestClass implements TestInterface { }
+       @Test
+       public void namedObjectIsNotReturnedIfNotAskedForByName() {
+               TestClass testObject = new TestClass();
+               Injector injector = createInjector(ObjectBinding.forClass(TestInterface.class).named("foo").is(testObject));
+               assertThrows(ConfigurationException.class, () -> injector.getInstance(TestInterface.class));
+       }
+
+       public interface TestInterface {
+       }
+
+       public static class TestClass implements TestInterface {
+       }
 
 }