Create a dagger/guice interoperability library, which permits (with limitations) the use of Dagger modules in Guice.

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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=86617720

1 files changed, 99 insertions, 0 deletions

diff --git a/extensions/dagger-adapter/test/com/google/inject/daggeradapter/DaggerAdapterTest.java b/extensions/dagger-adapter/test/com/google/inject/daggeradapter/DaggerAdapterTest.java
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+++ b/extensions/dagger-adapter/test/com/google/inject/daggeradapter/DaggerAdapterTest.java
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+/**
+ * Copyright (C) 2015 Google Inc.
+ *
+ * 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.google.inject.daggeradapter;
+
+import static dagger.Provides.Type.SET;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.inject.AbstractModule;
+import com.google.inject.Binder;
+import com.google.inject.Guice;
+import com.google.inject.Injector;
+import com.google.inject.Key;
+import com.google.inject.Module;
+import com.google.inject.Provides;
+import com.google.inject.multibindings.Multibinder;
+import com.google.inject.util.Providers;
+
+import junit.framework.TestCase;
+
+import java.util.Set;
+
+/**
+ * Tests for {@link DaggerAdapter}.
+ *
+ * @author cgruber@google.com (Christian Gruber)
+ */
+
+public class DaggerAdapterTest extends TestCase {
+  @dagger.Module static class SimpleDaggerModule {
+    @dagger.Provides Integer anInteger() {
+      return 1;
+    }
+  }
+
+  public void testSimpleModule() {
+    Injector i = Guice.createInjector(DaggerAdapter.from(new SimpleDaggerModule()));
+    assertEquals((Integer) 1, i.getInstance(Integer.class));
+  }
+
+  static class SimpleGuiceModule extends AbstractModule {
+    @Provides String aString(Integer i) {
+      return i.toString();
+    }
+    @Override protected void configure() {}
+  }
+
+  public void testInteractionWithGuiceModules() {
+     Injector i = Guice.createInjector(
+         new SimpleGuiceModule(),
+         DaggerAdapter.from(new SimpleDaggerModule()));
+     assertEquals("1", i.getInstance(String.class));
+  }
+
+  @dagger.Module static class SetBindingDaggerModule1 {
+    @dagger.Provides(type=SET) Integer anInteger() {
+      return 5;
+    }
+  }
+
+  @dagger.Module static class SetBindingDaggerModule2 {
+    @dagger.Provides(type=SET) Integer anInteger() {
+      return 3;
+    }
+  }
+
+  public void testSetBindings() {
+    Injector i = Guice.createInjector(
+        DaggerAdapter.from(new SetBindingDaggerModule1(), new SetBindingDaggerModule2()));
+    assertEquals(ImmutableSet.of(3, 5), i.getInstance(new Key<Set<Integer>>() {}));
+  }
+
+  static class MultibindingGuiceModule implements Module {
+    @Override public void configure(Binder binder) {
+      Multibinder<Integer> mb = Multibinder.newSetBinder(binder, Integer.class);
+      mb.addBinding().toInstance(13);
+      mb.addBinding().toProvider(Providers.of(8)); // mix'n'match.
+    }
+  }
+
+  public void testSetBindingsWithGuiceModule() {
+    Injector i = Guice.createInjector(
+        new MultibindingGuiceModule(),
+        DaggerAdapter.from(new SetBindingDaggerModule1(), new SetBindingDaggerModule2()));
+    assertEquals(ImmutableSet.of(13, 3, 5, 8), i.getInstance(new Key<Set<Integer>>() {}));
+  }
+}