From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Sun, 10 Nov 2024 20:56:53 +0000 (+0100)
Subject: 🚧 Allow binding objects with @Named annotations
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=3dd78a671d3b71c60628b73bea54582f69562aa8;p=rhynodge.git

🚧 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
--- 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
--- 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 {
+	}
 
 }