深海游弋的鱼 – 默默的点滴

Android Studio 3.6.3/4.0/4.1/4.2配置Robolectric-3.8/4.3.1/4.5.1/4.6.1 Powermock-1.6.6单元测试环境

基础配置以及常见错误

目前版本的Android Studio 3.6.3/4.0/4.1/4.2使用Robolectric-3.8/4.3.1/4.5.1/4.6.1，只能配合Powermock-1.6.6，不能高于这个版本PowerMock ，尽管软件源中的版本已经更新升级到2.0.7版本了，但是Robolectric并没有及时更新依赖。尝试过使用最新版本的PowerMock，结果很多莫名的报错。

    // 单元测试
    testImplementation "com.android.support.test:runner:1.0.2"
    testImplementation "junit:junit:4.13.2"
    testImplementation "org.robolectric:robolectric:4.5.1"

    // 注意AndroidX环境下，不能引入shadows-supportv4，Jetifier转换的时候报错
    testImplementation "org.robolectric:shadows-supportv4:4.5.1"

    // MultiDex支持
    testImplementation "org.robolectric:shadows-multidex:4.5.1"
    
    // 此处版本更新需要特别小心，目前 robolectric 跟 powermock 存在兼容问题，
    // 需要固定的某些版本才能正常配合
    // 依赖关系参考 
    // https://github.com/robolectric/robolectric/wiki/Using-PowerMock
    testImplementation "org.powermock:powermock-module-junit4:1.6.6"
    testImplementation "org.powermock:powermock-module-junit4-rule:1.6.6"
    testImplementation "org.powermock:powermock-classloading-xstream:1.6.6"
    testImplementation "org.powermock:powermock-api-mockito:1.6.6"

// 单元测试

testImplementation "com.android.support.test:runner:1.0.2"

testImplementation "junit:junit:4.13.2"

testImplementation "org.robolectric:robolectric:4.5.1"

// 注意AndroidX环境下，不能引入shadows-supportv4，Jetifier转换的时候报错

testImplementation "org.robolectric:shadows-supportv4:4.5.1"

// MultiDex支持

testImplementation "org.robolectric:shadows-multidex:4.5.1"

// 此处版本更新需要特别小心，目前 robolectric 跟 powermock 存在兼容问题，

// 需要固定的某些版本才能正常配合

// 依赖关系参考

// https://github.com/robolectric/robolectric/wiki/Using-PowerMock

testImplementation "org.powermock:powermock-module-junit4:1.6.6"

testImplementation "org.powermock:powermock-module-junit4-rule:1.6.6"

testImplementation "org.powermock:powermock-classloading-xstream:1.6.6"

testImplementation "org.powermock:powermock-api-mockito:1.6.6"

如果 Windows 系统下出现如下提示，受限于Windows系统路径不能超过260个字符的限制

13:36 Error running 'xxxTest': Command line is too long. Shorten command line for xxxTest or also for Android JUnit default configuration.

1	13:36 Error running 'xxxTest': Command line is too long. Shorten command line for xxxTest or also for Android JUnit default configuration.

貌似Windows 10 Build 14352版中已经可以通过修改注册表去除260字符的路径长度限制了。

在项目/.idea/workspace.xml文件中添加一行代码如下

<component name="PropertiesComponent">
    ...
    <property name="dynamic.classpath" value="true" />
</component>

...

</component>

对于使用MultiDex的应用，如果报告如下错误：

java.lang.RuntimeException: MultiDex installation failed (/var/folders/h6/4__l0pyn32j1mkkysynnxydr0000gn/T/robolectric-Method_xxxxxxxxxxxx_isCorrect4035485067136008322/com.xxxx.xxxx.app-sourceDir (Is a directory)).

	at android.support.multidex.MultiDex.install(MultiDex.java:121)
	at com.xxx.xx.app.xx.application.xxxxxx.attachBaseContext(MyApplication.java:212)
	at android.app.Application.attach(Application.java:212)
	at org.robolectric.util.ReflectionHelpers.callInstanceMethod(ReflectionHelpers.java:283)
	at org.robolectric.shadows.ShadowApplication.callAttach(ShadowApplication.java:79)
	at org.robolectric.android.internal.AndroidTestEnvironment.installAndCreateApplication(AndroidTestEnvironment.java:250)
	at org.robolectric.android.internal.AndroidTestEnvironment.setUpApplicationState(AndroidTestEnvironment.java:169)
	at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:301)
	at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:243)
	at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
	at java.util.concurrent.FutureTask.run(FutureTask.java)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

java.lang.RuntimeException: MultiDex installation failed (/var/folders/h6/4__l0pyn32j1mkkysynnxydr0000gn/T/robolectric-Method_xxxxxxxxxxxx_isCorrect4035485067136008322/com.xxxx.xxxx.app-sourceDir (Is a directory)).

at android.support.multidex.MultiDex.install(MultiDex.java:121)

at com.xxx.xx.app.xx.application.xxxxxx.attachBaseContext(MyApplication.java:212)

at android.app.Application.attach(Application.java:212)

at org.robolectric.util.ReflectionHelpers.callInstanceMethod(ReflectionHelpers.java:283)

at org.robolectric.shadows.ShadowApplication.callAttach(ShadowApplication.java:79)

at org.robolectric.android.internal.AndroidTestEnvironment.installAndCreateApplication(AndroidTestEnvironment.java:250)

at org.robolectric.android.internal.AndroidTestEnvironment.setUpApplicationState(AndroidTestEnvironment.java:169)

at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:301)

at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:243)

at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)

at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)

at java.util.concurrent.FutureTask.run(FutureTask.java)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

需要在build.gradle中引入

 
    // MultiDex支持
    testImplementation "org.robolectric:shadows-multidex:4.5.1"

// MultiDex支持

testImplementation "org.robolectric:shadows-multidex:4.5.1"

例子测试代码：

package com.mobibrw.example;

import org.junit.Test;
import static org.junit.Assert.*;

import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;
import org.robolectric.shadows.multidex.ShadowMultiDex;

/**
 * Example local unit test, which will execute on the development machine (host).
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
@RunWith(RobolectricTestRunner.class)
@PowerMockIgnore("jdk.internal.reflect.*")
@Config(shadows = ShadowMultiDex.class)
public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
        assertEquals(4, 2 + 2);
    }
}

package com.mobibrw.example;

import org.junit.Test;

import static org.junit.Assert.*;

import org.junit.runner.RunWith;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.annotation.Config;

import org.robolectric.shadows.multidex.ShadowMultiDex;

/**

* Example local unit test, which will execute on the development machine (host).

* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>

@RunWith(RobolectricTestRunner.class)

@PowerMockIgnore("jdk.internal.reflect.*")

@Config(shadows = ShadowMultiDex.class)

public class ExampleUnitTest {

@Test

public void addition_isCorrect() {

assertEquals(4, 2 + 2);

}

注意，需要

@Config(shadows = ShadowMultiDex.class)

1	@Config(shadows = ShadowMultiDex.class)

才能使得配置生效。

如果发生如下错误：

java.lang.VerifyError: Expecting a stackmap frame at branch target 43
Exception Details:
  Location:
    com/meizu/cloud/pushsdk/base/IntentReceiver.onReceive(Landroid/content/Context;Landroid/content/Intent;)V @6: ifne
  Reason:
    Expected stackmap frame at this location.
  Bytecode:
    0x0000000: b200 08b6 0013 9a00 25bb 0004 5912 0110
    0x0000010: 0ab7 000e 59b3 000a b600 10bb 0003 59b2
    0x0000020: 000a b600 0fb7 000c b300 09b2 0009 bb00
    0x0000030: 0659 2a2b 2cb7 0011 b600 0d57 b1       


	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
	at java.lang.Class.getConstructor0(Class.java:3075)
	at java.lang.Class.getDeclaredConstructor(Class.java:2178)
	at org.robolectric.util.ReflectionHelpers.callConstructor(ReflectionHelpers.java:396)
	at org.robolectric.internal.bytecode.ShadowImpl.newInstanceOf(ShadowImpl.java:18)
	at org.robolectric.shadow.api.Shadow.newInstanceOf(Shadow.java:35)
	at org.robolectric.android.internal.AndroidTestEnvironment.registerBroadcastReceivers(AndroidTestEnvironment.java:541)
	at org.robolectric.android.internal.AndroidTestEnvironment.installAndCreateApplication(AndroidTestEnvironment.java:265)
	at org.robolectric.android.internal.AndroidTestEnvironment.setUpApplicationState(AndroidTestEnvironment.java:169)
	at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:301)
	at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:243)
	at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
	at java.util.concurrent.FutureTask.run(FutureTask.java)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

java.lang.VerifyError: Expecting a stackmap frame at branch target 43

Exception Details:

Location:

com/meizu/cloud/pushsdk/base/IntentReceiver.onReceive(Landroid/content/Context;Landroid/content/Intent;)V @6: ifne

Reason:

Expected stackmap frame at this location.

Bytecode:

0x0000000: b200 08b6 0013 9a00 25bb 0004 5912 0110

0x0000010: 0ab7 000e 59b3 000a b600 10bb 0003 59b2

0x0000020: 000a b600 0fb7 000c b300 09b2 0009 bb00

0x0000030: 0659 2a2b 2cb7 0011 b600 0d57 b1

at java.lang.Class.getDeclaredConstructors0(Native Method)

at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)

at java.lang.Class.getConstructor0(Class.java:3075)

at java.lang.Class.getDeclaredConstructor(Class.java:2178)

at org.robolectric.util.ReflectionHelpers.callConstructor(ReflectionHelpers.java:396)

at org.robolectric.internal.bytecode.ShadowImpl.newInstanceOf(ShadowImpl.java:18)

at org.robolectric.shadow.api.Shadow.newInstanceOf(Shadow.java:35)

at org.robolectric.android.internal.AndroidTestEnvironment.registerBroadcastReceivers(AndroidTestEnvironment.java:541)

at org.robolectric.android.internal.AndroidTestEnvironment.installAndCreateApplication(AndroidTestEnvironment.java:265)

at org.robolectric.android.internal.AndroidTestEnvironment.setUpApplicationState(AndroidTestEnvironment.java:169)

at org.robolectric.RobolectricTestRunner.beforeTest(RobolectricTestRunner.java:301)

at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:243)

at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)

at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)

at java.util.concurrent.FutureTask.run(FutureTask.java)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

继续阅读Android Studio 3.6.3/4.0/4.1/4.2配置Robolectric-3.8/4.3.1/4.5.1/4.6.1 Powermock-1.6.6单元测试环境

Android Studio 2.1.3配置Robolectric-3.0,Powermock-1.6.5单元测试环境

Android Studio提供了比较方便的单元测试，但是由于Android系统的限制(Classloader是Google自己实现的，Powermock无法修改底层的bytecode)，目前Powermock还没办法直接在设备上执行测试，但是我们代码中难免存在一些静态对象，需要测试的时候，只能求助于Powermock与Robolectric的组合。
具体的配置如下:
1.首先在需要测试的项目的build.gradle中声明需要使用Powermock与Robolectric。

testCompile 'junit:junit:4.12'
testCompile 'org.powermock:powermock-api-mockito:1.6.5'
testCompile 'org.powermock:powermock-module-junit4-rule:1.6.5'
testCompile 'org.powermock:powermock-module-junit4:1.6.5'
testCompile "org.powermock:powermock-classloading-xstream:1.6.5"
/*不可使用3.1.x版本，3.1.x版本无法与PowerMock配合测试，运行时候直接报错*/
testCompile 'org.robolectric:robolectric:3.0'

testCompile 'junit:junit:4.12'

testCompile 'org.powermock:powermock-api-mockito:1.6.5'

testCompile 'org.powermock:powermock-module-junit4-rule:1.6.5'

testCompile 'org.powermock:powermock-module-junit4:1.6.5'

testCompile "org.powermock:powermock-classloading-xstream:1.6.5"

/*不可使用3.1.x版本，3.1.x版本无法与PowerMock配合测试，运行时候直接报错*/

testCompile 'org.robolectric:robolectric:3.0'

2.定义测试基类，在基类中声明一些必备的设置
AbsRobolectricPowerMockTest.java

import android.os.Build;

import org.junit.Rule;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PowerMockIgnore;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.modules.junit4.PowerMockRunnerDelegate;
import org.powermock.modules.junit4.rule.PowerMockRule;
import org.robolectric.RobolectricGradleTestRunner;
import org.robolectric.annotation.Config;

/**
 * Created by longsky.wq on 2016/8/22.
 */
@PowerMockRunnerDelegate(RobolectricGradleTestRunner.class)
@RunWith(PowerMockRunner.class)
@Config(constants = BuildConfig.class,
        sdk = Build.VERSION_CODES.JELLY_BEAN_MR1)
@PowerMockIgnore({"org.mockito.*", "org.robolectric.*", "android.*","javax.crypto.","java.security.*"})
abstract public class AbsRobolectricPowerMockTest {
    @Rule
    public PowerMockRule rule = new PowerMockRule();
}

import android.os.Build;

import org.junit.Rule;

import org.junit.runner.RunWith;

import org.powermock.core.classloader.annotations.PowerMockIgnore;

import org.powermock.modules.junit4.PowerMockRunner;

import org.powermock.modules.junit4.PowerMockRunnerDelegate;

import org.powermock.modules.junit4.rule.PowerMockRule;

import org.robolectric.RobolectricGradleTestRunner;

import org.robolectric.annotation.Config;

/**

* Created by longsky.wq on 2016/8/22.

@PowerMockRunnerDelegate(RobolectricGradleTestRunner.class)

@RunWith(PowerMockRunner.class)

@Config(constants = BuildConfig.class,

sdk = Build.VERSION_CODES.JELLY_BEAN_MR1)

@PowerMockIgnore({"org.mockito.*", "org.robolectric.*", "android.*","javax.crypto.","java.security.*"})

abstract public class AbsRobolectricPowerMockTest {

@Rule

public PowerMockRule rule = new PowerMockRule();

}

3.定义真正的测试子类
DeckardActivityTest.java

import org.junit.Test;
import org.junit.Assert;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;

import static junit.framework.Assert.assertTrue;

@PrepareForTest(Static.class)
public class DeckardActivityTest extends AbsRobolectricPowerMockTest {
    @Test
    public void testStaticMocking() {
        /*如果如下断言失败，说明Robolectric环境没有初始化成功，说明配置存在问题*/
        Assert.assertNotNull(RuntimeEnvironment.application);
        
        PowerMockito.mockStatic(Static.class);
        Mockito.when(Static.staticMethod()).thenReturn("hello mock");

        assertTrue(Static.staticMethod().equals("hello mock"));
    }
}

import org.junit.Test;

import org.junit.Assert;

import org.mockito.Mockito;

import org.powermock.api.mockito.PowerMockito;

import org.powermock.core.classloader.annotations.PrepareForTest;

import static junit.framework.Assert.assertTrue;

@PrepareForTest(Static.class)

public class DeckardActivityTest extends AbsRobolectricPowerMockTest {

@Test

public void testStaticMocking() {

/*如果如下断言失败，说明Robolectric环境没有初始化成功，说明配置存在问题*/

Assert.assertNotNull(RuntimeEnvironment.application);

PowerMockito.mockStatic(Static.class);

Mockito.when(Static.staticMethod()).thenReturn("hello mock");

assertTrue(Static.staticMethod().equals("hello mock"));

}

注意，参考链接中的内容不可完全相信，按照参考链接中的配置（Robolectric-3.1.2+PowerMock-1.6.5），一般会遇到如下问题（看上去很怪异，其实是由于不同的classloader同时加载了相同的类，导致尽管类名是相同的，但是依旧无法进行类型转换）：

com.thoughtworks.xstream.converters.ConversionException: Could not call org.apache.tools.ant.Project$AntRefTable.readObject() : Cannot convert type org.apache.tools.ant.Project to type org.apache.tools.ant.Project
---- Debugging information ----
class               : org.apache.tools.ant.types.FileSet
required-type       : org.apache.tools.ant.types.FileSet
converter-type      : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path                : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/this$1/outer-class/dependencyResolver/dependencyResolver/project/references/hashtable/org.apache.tools.ant.types.FileSet/project
line number         : 167
-------------------------------
message             : Could not call org.apache.tools.ant.Project$AntRefTable.readObject()
cause-exception     : com.thoughtworks.xstream.converters.ConversionException
cause-message       : Cannot convert type org.apache.tools.ant.Project to type org.apache.tools.ant.Project
class               : org.apache.tools.ant.Project$AntRefTable
required-type       : org.apache.tools.ant.types.FileSet
converter-type      : com.thoughtworks.xstream.converters.reflection.SerializableConverter
path                : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/this$1/outer-class/dependencyResolver/dependencyResolver/project/references/hashtable/org.apache.tools.ant.types.FileSet/project
line number         : 167
class[1]            : org.apache.tools.ant.Project
converter-type[1]   : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
class[2]            : org.robolectric.internal.dependency.MavenDependencyResolver
class[3]            : org.robolectric.internal.dependency.CachedDependencyResolver
class[4]            : org.robolectric.RobolectricGradleTestRunner
class[5]            : org.robolectric.RobolectricTestRunner$HelperTestRunner
class[6]            : org.robolectric.RobolectricTestRunner$HelperTestRunner$1
class[7]            : org.powermock.modules.junit4.rule.PowerMockStatement
class[8]            : org.powermock.modules.junit4.rule.PowerMockStatement$1
version             : not available
-------------------------------

	at com.thoughtworks.xstream.core.util.SerializationMembers.callReadObject(SerializationMembers.java:133)
	at com.thoughtworks.xstream.converters.reflection.SerializableConverter.doUnmarshal(SerializableConverter.java:455)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
	at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
	at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1206)
	at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1190)
	at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1061)
	at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1052)
	at org.powermock.classloading.DeepCloner.clone(DeepCloner.java:54)
	at org.powermock.classloading.AbstractClassloaderExecutor.executeWithClassLoader(AbstractClassloaderExecutor.java:56)
	at org.powermock.classloading.SingleClassloaderExecutor.execute(SingleClassloaderExecutor.java:67)
	at org.powermock.classloading.AbstractClassloaderExecutor.execute(AbstractClassloaderExecutor.java:43)
	at org.powermock.modules.junit4.rule.PowerMockStatement.evaluate(PowerMockRule.java:75)
	at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:250)
	at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:176)
	at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:49)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:142)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner$2.call(DelegatingPowerMockRunner.java:148)
	at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner$2.call(DelegatingPowerMockRunner.java:140)
	at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner.withContextClassLoader(DelegatingPowerMockRunner.java:131)
	at org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner.run(DelegatingPowerMockRunner.java:140)
	at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121)
	at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
	at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
Caused by: com.thoughtworks.xstream.converters.ConversionException: Cannot convert type org.apache.tools.ant.Project to type org.apache.tools.ant.Project
---- Debugging information ----
class               : org.apache.tools.ant.types.FileSet
required-type       : org.apache.tools.ant.types.FileSet
converter-type      : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path                : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/this$1/outer-class/dependencyResolver/dependencyResolver/project/references/hashtable/org.apache.tools.ant.types.FileSet/project
line number         : 167
-------------------------------
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:439)
	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
	at com.thoughtworks.xstream.converters.reflection.SerializableConverter$2.readFromStream(SerializableConverter.java:337)
	at com.thoughtworks.xstream.core.util.CustomObjectInputStream.readObjectOverride(CustomObjectInputStream.java:120)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:364)
	at java.util.Hashtable.readObject(Hashtable.java:996)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at com.thoughtworks.xstream.core.util.SerializationMembers.callReadObject(SerializationMembers.java:125)
	... 86 more

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

com.thoughtworks.xstream.converters.ConversionException: Could not call org.apache.tools.ant.Project$AntRefTable.readObject() : Cannot convert type org.apache.tools.ant.Project to type org.apache.tools.ant.Project

---- Debugging information ----

class : org.apache.tools.ant.types.FileSet

required-type : org.apache.tools.ant.types.FileSet

converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter

path : /org.powermock.modules.junit4.rule.PowerMockStatement$1/outer-class/fNext/this$1/outer-class/dependencyResolver/dependencyResolver/project/references/hashtable/org.apache.tools.ant.types.FileSet/project

line number : 167

-------------------------------

message : Could not call org.apache.tools.ant.Project$AntRefTable.readObject()

cause-exception : com.thoughtworks.xstream.converters.ConversionException

cause-message : Cannot convert type org.apache.tools.ant.Project to type org.apache.tools.ant.Project

class : org.apache.tools.ant.Project$AntRefTable

required-type : org.apache.tools.ant.types.FileSet

converter-type : com.thoughtworks.xstream.converters.reflection.SerializableConverter

line number : 167

class[1] : org.apache.tools.ant.Project

converter-type[1] : com.thoughtworks.xstream.converters.reflection.ReflectionConverter

class[2] : org.robolectric.internal.dependency.MavenDependencyResolver

class[3] : org.robolectric.internal.dependency.CachedDependencyResolver

class[4] : org.robolectric.RobolectricGradleTestRunner

class[5] : org.robolectric.RobolectricTestRunner$HelperTestRunner

class[6] : org.robolectric.RobolectricTestRunner$HelperTestRunner$1

class[7] : org.powermock.modules.junit4.rule.PowerMockStatement

class[8] : org.powermock.modules.junit4.rule.PowerMockStatement$1

version : not available

-------------------------------

at com.thoughtworks.xstream.core.util.SerializationMembers.callReadObject(SerializationMembers.java:133)

at com.thoughtworks.xstream.converters.reflection.SerializableConverter.doUnmarshal(SerializableConverter.java:455)

at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:263)

at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)

at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)

at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)

at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:480)

at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:412)