1 /*
2  * Copyright (C) 2018 The Dagger Authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package dagger.android.processor;
18 
19 import static com.google.testing.compile.CompilationSubject.assertThat;
20 import static com.google.testing.compile.Compiler.javac;
21 
22 import com.google.testing.compile.Compilation;
23 import com.google.testing.compile.JavaFileObjects;
24 import dagger.internal.codegen.ComponentProcessor;
25 import javax.tools.JavaFileObject;
26 import org.junit.Test;
27 import org.junit.runner.RunWith;
28 import org.junit.runners.JUnit4;
29 
30 @RunWith(JUnit4.class)
31 public final class DuplicateAndroidInjectorsCheckerTest {
32   @Test
conflictingMapKeys()33   public void conflictingMapKeys() {
34     JavaFileObject activity =
35         JavaFileObjects.forSourceLines(
36             "test.TestActivity",
37             "package test;",
38             "",
39             "import android.app.Activity;",
40             "",
41             "public class TestActivity extends Activity {}");
42     JavaFileObject injectorFactory =
43         JavaFileObjects.forSourceLines(
44             "test.TestInjectorFactory",
45             "package test;",
46             "",
47             "import dagger.android.AndroidInjector;",
48             "import javax.inject.Inject;",
49             "",
50             "class TestInjectorFactory implements AndroidInjector.Factory<TestActivity> {",
51             "  @Inject TestInjectorFactory() {}",
52             "",
53             "  @Override",
54             "  public AndroidInjector<TestActivity> create(TestActivity instance) { return null; }",
55             "}");
56     JavaFileObject module =
57         JavaFileObjects.forSourceLines(
58             "test.TestModule",
59             "package test;",
60             "",
61             "import android.app.Activity;",
62             "import dagger.Binds;",
63             "import dagger.Module;",
64             "import dagger.android.*;",
65             "import dagger.multibindings.*;",
66             "",
67             "@Module",
68             "interface TestModule {",
69             "  @Binds",
70             "  @IntoMap",
71             "  @ClassKey(TestActivity.class)",
72             "  AndroidInjector.Factory<?> classKey(TestInjectorFactory factory);",
73             "",
74             "  @Binds",
75             "  @IntoMap",
76             "  @AndroidInjectionKey(\"test.TestActivity\")",
77             "  AndroidInjector.Factory<?> stringKey(TestInjectorFactory factory);",
78             "}");
79     JavaFileObject component =
80         JavaFileObjects.forSourceLines(
81             "test.TestComponent",
82             "package test;",
83             "",
84             "import android.app.Activity;",
85             "import dagger.Component;",
86             "import dagger.android.DispatchingAndroidInjector;",
87             "",
88             "@Component(modules = TestModule.class)",
89             "interface TestComponent {",
90             "  DispatchingAndroidInjector<Activity> dispatchingInjector();",
91             "}");
92 
93     Compilation compilation =
94         javac()
95             .withProcessors(ComponentProcessor.forTesting(new DuplicateAndroidInjectorsChecker()))
96             .compile(activity, injectorFactory, module, component);
97     assertThat(compilation).failed();
98     assertThat(compilation)
99         .hadErrorContaining("Multiple injector factories bound for the same type")
100         .inFile(component)
101         .onLineContaining("interface TestComponent");
102     assertThat(compilation).hadErrorContaining("classKey(test.TestInjectorFactory)");
103     assertThat(compilation).hadErrorContaining("stringKey(test.TestInjectorFactory)");
104     assertThat(compilation).hadErrorCount(1);
105   }
106 }
107