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Dagger, JUnit and Mockito example
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‎com.vogella.android.daggerjunitmockito/.gitignore

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*.iml
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.gradle
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/local.properties
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/.idea/workspace.xml
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/.idea/libraries
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.DS_Store
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/build
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/captures

‎com.vogella.android.daggerjunitmockito/app/.gitignore

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/build

‎com.vogella.android.daggerjunitmockito/app/build.gradle

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apply plugin: 'com.android.application'
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apply plugin: 'com.neenbedankt.android-apt'
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android {
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compileSdkVersion 23
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buildToolsVersion "23.0.3"
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defaultConfig {
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applicationId "com.vogella.android.daggerjunitmockito"
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minSdkVersion 23
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targetSdkVersion 23
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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// Define versions in a single place
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ext {
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// App dependencies
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supportLibraryVersion = '23.4.0'
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guavaVersion = '18.0'
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glideVersion = '3.6.1'
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junitVersion = '4.12'
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mockitoVersion = '1.10.19'
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powerMockito = '1.6.2'
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hamcrestVersion = '1.3'
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runnerVersion = '0.5'
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rulesVersion = '0.5'
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espressoVersion = '2.2.2'
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DAGGER_VERSION ='2.4'
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}
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dependencies {
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// Dependencies for local unit tests
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testCompile "junit:junit:$junitVersion"
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testCompile "org.mockito:mockito-all:$mockitoVersion"
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testCompile "org.hamcrest:hamcrest-all:$hamcrestVersion"
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testCompile "org.powermock:powermock-module-junit4:$powerMockito"
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testCompile "org.powermock:powermock-api-mockito:$powerMockito"
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testCompile 'com.google.dagger:dagger:2.4'
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compile 'com.google.dagger:dagger:2.4'
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apt "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
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testApt "com.google.dagger:dagger-compiler:$DAGGER_VERSION"
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provided 'javax.annotation:jsr250-api:1.0'
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compile fileTree(dir: 'libs', include: ['*.jar'])
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compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha3'
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compile 'javax.inject:javax.inject:1'
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androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
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androidTestCompile 'com.android.support.test:runner:0.5'
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androidTestCompile 'com.android.support:support-annotations:23.4.0'
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androidTestCompile 'org.mockito:mockito-core:2.0.57-beta'
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androidTestCompile "com.google.dexmaker:dexmaker:1.2"
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androidTestCompile "com.google.dexmaker:dexmaker-mockito:1.2"
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testCompile 'junit:junit:4.12'
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testCompile 'org.mockito:mockito-core:2.0.57-beta'
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testCompile 'junit:junit:4.12'
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testCompile 'javax.inject:javax.inject:1'
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}

‎com.vogella.android.daggerjunitmockito/app/proguard-rules.pro

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# Add project specific ProGuard rules here.
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# By default, the flags in this file are appended to flags specified
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# in /home/vogella/android-sdks/tools/proguard/proguard-android.txt
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# You can edit the include path and order by changing the proguardFiles
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# directive in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# Add any project specific keep options here:
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}

‎com.vogella.android.daggerjunitmockito/app/src/androidTest/java/com/vogella/android/daggerjunitmockito/ExampleInstrumentationTest.java

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package com.vogella.android.daggerjunitmockito;
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import android.content.Context;
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import android.support.test.InstrumentationRegistry;
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import android.support.test.filters.MediumTest;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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/**
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* Instrumentation test, which will execute on an Android device.
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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@MediumTest
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@RunWith(AndroidJUnit4.class)
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public class ExampleInstrumentationTest {
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@Test
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public void useAppContext() throws Exception {
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// Context of the app under test.
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Context appContext = InstrumentationRegistry.getTargetContext();
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assertEquals("com.vogella.android.daggerjunitmockito", appContext.getPackageName());
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.vogella.android.daggerjunitmockito">
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/MainActivity.java

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package com.vogella.android.daggerjunitmockito;
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import android.app.Activity;
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import android.os.Bundle;
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public class MainActivity extends Activity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/MainService.java

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package com.vogella.android.daggerjunitmockito;
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import javax.inject.Inject;
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/**
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* Created by vogella on 14.06.16.
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*/
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public class MainService {
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private RestService restService;
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private MyPrinter printer;
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@Inject
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public MainService(RestService restService,
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MyPrinter printer) {
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this.restService = restService;
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this.printer = printer;
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}
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public void doSomething() {
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String s = restService.getSomething();
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printer.print(s.toUpperCase());
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/MyComponent.java

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package com.vogella.android.daggerjunitmockito;
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import javax.inject.Singleton;
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import dagger.Component;
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@Singleton
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@Component(modules = MyModule.class)
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public interface MyComponent {
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MainService mainService();
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void inject(MainActivity mainActivity);
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/MyModule.java

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package com.vogella.android.daggerjunitmockito;
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import javax.inject.Singleton;
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import dagger.Module;
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import dagger.Provides;
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@Module
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public class MyModule {
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@Provides @Singleton
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public RestService provideRestService() {
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return new RestService();
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}
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@Provides
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@Singleton public MyPrinter provideMyPrinter() {
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return new MyPrinter();
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/MyPrinter.java

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package com.vogella.android.daggerjunitmockito;
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/**
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* Created by vogella on 14.06.16.
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*/
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public class MyPrinter {
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public void print(String s) {
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System.out.println(s);
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/java/com/vogella/android/daggerjunitmockito/RestService.java

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package com.vogella.android.daggerjunitmockito;
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/**
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* Created by vogella on 14.06.16.
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*/
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public class RestService {
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public String getSomething() {
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return "Hello world";
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/main/res/layout/activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
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<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:id="@+id/activity_main"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context="com.vogella.android.daggerjunitmockito.MainActivity">
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Hello World!"
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app:layout_constraintBottom_toBottomOf="@+id/activity_main"
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app:layout_constraintLeft_toLeftOf="@+id/activity_main"
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app:layout_constraintRight_toRightOf="@+id/activity_main"
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app:layout_constraintTop_toTopOf="@+id/activity_main" />
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</android.support.constraint.ConstraintLayout>

‎com.vogella.android.daggerjunitmockito/app/src/main/res/mipmap-hdpi/ic_launcher.png

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‎com.vogella.android.daggerjunitmockito/app/src/main/res/mipmap-mdpi/ic_launcher.png

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‎com.vogella.android.daggerjunitmockito/app/src/main/res/mipmap-xhdpi/ic_launcher.png

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‎com.vogella.android.daggerjunitmockito/app/src/main/res/mipmap-xxhdpi/ic_launcher.png

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‎com.vogella.android.daggerjunitmockito/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png

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‎com.vogella.android.daggerjunitmockito/app/src/main/res/values-w820dp/dimens.xml

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<resources>
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<!-- Example customization of dimensions originally defined in res/values/dimens.xml
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(such as screen margins) for screens with more than 820dp of available width. This
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would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
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<dimen name="activity_horizontal_margin">64dp</dimen>
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</resources>

‎com.vogella.android.daggerjunitmockito/app/src/main/res/values/colors.xml

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<?xml version="1.0" encoding="utf-8"?>
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<resources>
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<color name="colorPrimary">#3F51B5</color>
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<color name="colorPrimaryDark">#303F9F</color>
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<color name="colorAccent">#FF4081</color>
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</resources>

‎com.vogella.android.daggerjunitmockito/app/src/main/res/values/dimens.xml

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<resources>
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<!-- Default screen margins, per the Android Design guidelines. -->
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<dimen name="activity_horizontal_margin">16dp</dimen>
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<dimen name="activity_vertical_margin">16dp</dimen>
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</resources>

‎com.vogella.android.daggerjunitmockito/app/src/main/res/values/strings.xml

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<resources>
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<string name="app_name">Dagger Junit Mockito</string>
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</resources>

‎com.vogella.android.daggerjunitmockito/app/src/main/res/values/styles.xml

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<resources>
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<!-- Base application theme. -->
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<style name="AppTheme" parent="android:Theme.Material.Light.DarkActionBar">
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<!-- Customize your theme here. -->
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</style>
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</resources>

‎com.vogella.android.daggerjunitmockito/app/src/test/java/com/vogella/android/daggerjunitmockito/ExampleUnitTest.java

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package com.vogella.android.daggerjunitmockito;
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import org.junit.Test;
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import static org.junit.Assert.*;
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/**
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* Example local unit test, which will execute on the development machine (host).
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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public class ExampleUnitTest {
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@Test
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public void addition_isCorrect() throws Exception {
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assertEquals(4, 2 + 2);
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}
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}

‎com.vogella.android.daggerjunitmockito/app/src/test/java/com/vogella/android/daggerjunitmockito/MainServiceDaggerTest.java

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package com.vogella.android.daggerjunitmockito;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.Test;
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import javax.inject.Inject;
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import dagger.Component;
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import static org.mockito.Mockito.*;
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public class MainServiceDaggerTest {
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@Inject
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RestService restService;
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@Inject MyPrinter myPrinter;
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@Inject MainService mainService;
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@Before
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public void setUp() {
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TestComponent build = DaggerTestComponent.builder().testModule(new TestModule()).build();
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build.inject(this);
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}
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@Test
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public void testDoSomething() {
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when(restService.getSomething()).thenReturn("abc");
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mainService.doSomething();
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verify(myPrinter).print("ABC");
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}
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// private Component verify(MyPrinter myPrinter) {
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// }
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}

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