android – 我可以在Espresso中扩展自定义应用程序吗？

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我正在尝试在我的Espresso仪器测试中设置匕首,以嘲笑外部资源的调用(在这种情况下为RESTful服务).在Robolectric进行单元测试时,我使用的模式是扩展我的生产应用程序类,并用测试模块覆盖Dagger模块,该模块将返回嘲讽.我试图在这里做同样的事情,但是当我尝试将应用程序转换到我的自定义应用程序时,我的Espresso测试中会收到ClassCastException.

这是我到目前为止设置的：

生产

在app / src / main / java / com / mypackage / injection下我有：

MyCustomApplication

package com.mypackage.injection;

import android.app.Application;

import java.util.ArrayList;
import java.util.List;

import dagger.ObjectGraph;

public class MyCustomApplication extends Application {

    protected ObjectGraph graph;

    @Override
    public void onCreate() {
        super.onCreate();

        graph = ObjectGraph.create(getModules().toArray());
    }

    protected List<Object> getModules() {
        List<Object> modules = new ArrayList<Object>();
        modules.add(new AndroidModule(this));
        modules.add(new RemoteResourcesModule(this));
        modules.add(new MyCustomModule());

        return modules;
    }

    public void inject(Object object) {
        graph.inject(object);
    }
}

我以下列方式使用：

BaseActivity

package com.mypackage.injection.views;

import android.app.Activity;
import android.os.Bundle;

import com.mypackage.injection.MyCustomApplication;

public abstract class MyCustomBaseActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        ((MyCustomApplication)getApplication()).inject(this);
    }

}

被测活动

package com.mypackage.views.mydomain;
// imports snipped for bevity

public class MyActivity extends MyBaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //snip
    }
}

浓咖啡设置

在app / src / androidTest / java / com / mypackage / injection下我有：

MyCustomEspressoApplication

package com.mypackage.injection;

import java.util.ArrayList;
import java.util.List;

import dagger.ObjectGraph;

public class MyCustomEspressoApplication extends MyCustomApplication {

    private AndroidModule androidModule;
    private MyCustomModule myCustomModule;
    private EspressoRemoteResourcesModule espressoRemoteResourcesModule;

    @Override
    public void onCreate() {
        super.onCreate();

        graph = ObjectGraph.create(getModules().toArray());
    }

    protected List<Object> getModules() {
        List<Object> modules = new ArrayList<Object>();
        modules.add(getAndroidModule());
        modules.add(getEspressoRemoteResourcesModule());
        modules.add(getMyCustomModule());

        return modules;
    }

    public void inject(Object object) {
        graph.inject(object);
    }

    public AndroidModule getAndroidModule() {
        if (this.androidModule == null) {
            this.androidModule = new AndroidModule(this);
        }

        return this.androidModule;
    }

    public MyCustomModule getMyCustomModule() {
        if (this.myCustomModule == null) {
            this.myCustomModule = new MyCustomModule();
        }

        return this.myCustomModule;
    }

    public EspressoRemoteResourcesModule getEspressoRemoteResourcesModule() {
        if (this.espressoRemoteResourcesModule == null) {
            this.espressoRemoteResourcesModule = new EspressoRemoteResourcesModule();
        }

        return this.espressoRemoteResourcesModule;
    }
}

我的Espresso测试,在app / src / androidTest / com / mypackage / espresso下：

package com.mypackage.espresso;

// imports snipped for brevity

@RunWith(AndroidJUnit4.class)
@LargeTest
public class MyActivityTest extends   ActivityInstrumentationTestCase2<MyActivity>{

    private MyActivity myActivity;

    public MyActivityTest() {
        super(MyActivity.class);
    }

    @Before
    public void setUp() throws Exception {
        super.setUp();
        injectInstrumentation(InstrumentationRegistry.getInstrumentation());
        myActivity = getActivity();
    }

    @After
    public void tearDown() throws Exception {
        super.tearDown();
    }

     @Test
     public void testWhenTheActionBarButtonIsPressedThenThePlacesAreListed() {
         //The next line is where the runtime exception occurs.
         MyCustomEspressoApplication app = (MyCustomEspressoApplication)getInstrumentation().getTargetContext().getApplicationContext();
        //I've also tried getActivity().getApplication() and 
        // getActivity.getApplicationContext() with the same results
        //snip
     }
}

我的AndroidManifest.xml

(我以前在自定义应用程序类中看到关于ClassCastException的许多答案,其中大部分都是在Application节点上指出一个缺少的“android：name”属性,我把这个粘贴在这里表明不是这样的据我所知.)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.mypackage">   
    <!-- snip --> 
    <application
        android:name=".injection.MyCustomApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
    <!-- snip -->
    </application>
<!-- snip -->
</manifest>

的build.gradle

buildscript {
    repositories {
        mavenCentral()
        jcenter()
    }
}

apply plugin: 'com.android.application'
apply plugin: 'idea'

android {
    testOptions {
        unitTests.returnDefaultValues = true
    }
    lintOptions {
        abortOnError false
    }
   packagingOptions {
        exclude 'LICENSE.txt'
        exclude 'Meta-INF/LICENSE'
        exclude 'Meta-INF/LICENSE.txt'
        exclude 'Meta-INF/NOTICE'
    }
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.mypackage"
        minSdkVersion 15
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
}

idea {
    module {
        testOutputDir = file('build/test-classes/debug')
    }
}

dependencies {
    compile project(':swipeablecardview')

    compile fileTree(dir: 'libs',include: ['*.jar'])
    compile 'com.android.support:support-annotations:21.0.3'
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile 'com.squareup:javawriter:2.5.0'
    compile ('com.squareup.dagger:dagger:1.2.2') {
        exclude module: 'javawriter'
    }
    compile ('com.squareup.dagger:dagger-compiler:1.2.2') {
        exclude module: 'javawriter'
    }
    compile 'com.melnykov:floatingactionbutton:1.1.0'
    compile 'com.android.support:cardview-v7:21.0.+'
    compile 'com.android.support:recyclerview-v7:21.0.+'
    //    compile 'se.walkercrou:google-places-api-java:2.1.0'
    compile 'org.apache.httpcomponents:httpclient-android:4.3.5.1'
    compile 'commons-io:commons-io:1.3.2'
    testCompile 'org.hamcrest:hamcrest-integration:1.3'
    testCompile 'org.hamcrest:hamcrest-core:1.3'
    testCompile 'org.hamcrest:hamcrest-library:1.3'
    testCompile('junit:junit:4.12')
    testCompile 'org.mockito:mockito-core:1.+'
    testCompile('org.robolectric:robolectric:3.0-SNAPSHOT')
    testCompile('org.robolectric:shadows-support-v4:3.0-SNAPSHOT')
    androidTestCompile 'org.mockito:mockito-core:1.+'
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.0') {
        exclude group: 'javax.inject'
        exclude module: 'javawriter'
    }
    androidTestCompile('com.android.support.test:testing-support-lib:0.1')
}

堆栈跟踪：

java.lang.ClassCastException:
com.mypackage.injection.MyCustomApplication cannot be cast to
com.mypackage.injection.MyCustomEspressoApplication at
com.mypackage.espresso.MyActivityTest.testWhenTheActionBarButtonIsPressedThenThePlacesAreListed(MyActivityTest.java:107)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:511) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at
org.junit.runners.ParentRunner.run(ParentRunner.java:300) at
org.junit.runners.Suite.runChild(Suite.java:128) at
org.junit.runners.Suite.runChild(Suite.java:24) at
org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at
org.junit.runners.ParentRunner.run(ParentRunner.java:300) at
org.junit.runner.JUnitCore.run(JUnitCore.java:157) at
org.junit.runner.JUnitCore.run(JUnitCore.java:136) at
android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:270)
at
android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1551)

我已经阅读了Espresso和Dagger文档,并通过Github上的问题搜索无效.我很乐意任何人都可以提供任何帮助.提前致谢.

编辑#1

我遵循Daniel的建议来扩展测试运行器并检查VerifyError,并获得以下堆栈跟踪：

java.lang.ExceptionInInitializerError
            at org.mockito.internal.creation.cglib.ClassImposterizer.createProxyClass(ClassImposterizer.java:95)
            at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:57)
            at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:49)
            at org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:24)
            at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33)
            at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
            at org.mockito.Mockito.mock(Mockito.java:1285)
            at org.mockito.Mockito.mock(Mockito.java:1163)
            at com.mypackage.injection.EspressoRemoteResourcesModule.<init>(EspressoRemoteResourcesModule.java:17)
            at com.mypackage.injection.MyCustomEspressoApplication.getEspressoRemoteResourcesModule(MyCustomEspressoApplication.java:52)
            at com.mypackage.injection.MyCustomEspressoApplication.getModules(MyCustomEspressoApplication.java:24)
            at com.mypackage.injection.MyCustomApplication.onCreate(MyCustomApplication.java:18)
            at com.mypackage.injection.MyCustomEspressoApplication.onCreate(MyCustomEspressoApplication.java:16)
            at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999)
            at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151)
            at android.app.ActivityThread.access$1300(ActivityThread.java:130)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4745)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.VerifyError: org/mockito/cglib/core/ReflectUtils
            at org.mockito.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:167)
            at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
            at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)
            at org.mockito.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
            at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:117)
            at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:109)
            at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:105)
            at org.mockito.cglib.proxy.Enhancer.<clinit>(Enhancer.java:70)
at org.mockito.internal.creation.cglib.ClassImposterizer.createProxyClass(ClassImposterizer.java:95)
at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:57)
at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:49)
at org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:24)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
at org.mockito.Mockito.mock(Mockito.java:1285)
at org.mockito.Mockito.mock(Mockito.java:1163)
at com.mypackage.injection.EspressoRemoteResourcesModule.<init>(EspressoRemoteResourcesModule.java:17)
at com.mypackage.injection.MyCustomEspressoApplication.getEspressoRemoteResourcesModule(MyCustomEspressoApplication.java:52)
at com.mypackage.injection.MyCustomEspressoApplication.getModules(MyCustomEspressoApplication.java:24)
at com.mypackage.injection.MyCustomApplication.onCreate(MyCustomApplication.java:18)
at com.mypackage.injection.MyCustomEspressoApplication.onCreate(MyCustomEspressoApplication.java:16)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151)
at android.app.ActivityThread.access$1300(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
04-29 06:40:28.594    1016-1016/? W/ActivityManager﹕ Error in app com.mypackage running instrumentation ComponentInfo{com.mypackage.test/com.mypackage.EspressoTestRunner}:
04-29 06:40:28.594    1016-1016/? W/ActivityManager﹕ java.lang.VerifyError
04-29 06:40:28.594    1016-1016/? W/ActivityManager﹕ java.lang.VerifyError: org/mockito/cglib/core/ReflectUtils

这让我指着Mockito.我缺少必要的mockito和dexmaker图书馆.

我更新了我的依赖关系：

androidTestCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
androidTestCompile ('com.google.dexmaker:dexmaker-mockito:1.2') {
    exclude module: 'hamcrest-core'
    exclude module: 'mockito-core'
}
androidTestCompile('com.android.support.test.espresso:espresso-core:2.0') {
     exclude group: 'javax.inject'
}

我也覆盖了MyCustomModule,它需要包含EspressoRemoteResourcesModule.一旦我这样做,事情就开始工作了.

解决方法

使用自定义检测运行器,您可以覆盖newApplication,并将其从清单中实例化为默认应用程序以外的其他内容. 
public class MyRunner extends AndroidJUnitRunner {
  @Override
  public Application newApplication(ClassLoader cl,String className,Context context)
      throws Exception {
    return super.newApplication(cl,MyCustomEspressoApplication.class.getName(),context);
  }
}

确保使用您的自定义赛跑者的名称更新testInstrumentationRunner.

原文链接：https://www.f2er.com/android/310840.html

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