| /* |
| * Copyright (C) 2016 The Dagger Authors. |
| * |
| * 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 dagger.internal.codegen; |
| |
| import static com.google.testing.compile.CompilationSubject.assertThat; |
| import static dagger.internal.codegen.Compilers.daggerCompiler; |
| |
| import com.google.testing.compile.Compilation; |
| import com.google.testing.compile.JavaFileObjects; |
| import javax.tools.JavaFileObject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class OptionalBindingTest { |
| @Test |
| public void provideExplicitOptionalInParent_AndBindsOptionalOfInChild() { |
| JavaFileObject parent = |
| JavaFileObjects.forSourceLines( |
| "test.Parent", |
| "package test;", |
| "", |
| "import dagger.Component;", |
| "import java.util.Optional;", |
| "", |
| "@Component(modules = ParentModule.class)", |
| "interface Parent {", |
| " Optional<String> optional();", |
| " Child child();", |
| "}"); |
| JavaFileObject parentModule = |
| JavaFileObjects.forSourceLines( |
| "test.ParentModule", |
| "package test;", |
| "", |
| "import dagger.Module;", |
| "import dagger.Provides;", |
| "import java.util.Optional;", |
| "", |
| "@Module", |
| "class ParentModule {", |
| " @Provides", |
| " Optional<String> optional() {", |
| " return Optional.of(new String());", |
| " }", |
| "}"); |
| |
| JavaFileObject child = |
| JavaFileObjects.forSourceLines( |
| "test.Child", |
| "package test;", |
| "", |
| "import dagger.Subcomponent;", |
| "import java.util.Optional;", |
| "", |
| "@Subcomponent(modules = ChildModule.class)", |
| "interface Child {", |
| " Optional<String> optional();", |
| "}"); |
| JavaFileObject childModule = |
| JavaFileObjects.forSourceLines( |
| "test.ChildModule", |
| "package test;", |
| "", |
| "import dagger.BindsOptionalOf;", |
| "import dagger.Module;", |
| "", |
| "@Module", |
| "interface ChildModule {", |
| " @BindsOptionalOf", |
| " String optionalString();", |
| "}"); |
| |
| Compilation compilation = daggerCompiler().compile(parent, parentModule, child, childModule); |
| assertThat(compilation).failed(); |
| assertThat(compilation) |
| .hadErrorContaining("Optional<String> is bound multiple times") |
| .inFile(parent) |
| .onLineContaining("interface Parent"); |
| } |
| } |