深海游弋的鱼 – 默默的点滴

Android Studio Flamingo | 2022.2.1 Patch 2 配置Robolectric-3.8/4.3.1/4.5.1/4.6.1单元测试环境

一直通过 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单元测试环境配置 Powermock 进行单元测试。

虽然配置起来稍显复杂，但是也是够用的。

但是当升级到Android Studio Flamingo | 2022.2.1 Patch 2 之后，内置的 Java 版本被升级到 Java 17 ，使用这个 Java 版本执行单元测试，会报错如下：

Failed to instantiate DeepCloner. The DeepCloner implementation must have a one-arg constructor taking a Classloader as parameter.
java.lang.RuntimeException: Failed to instantiate DeepCloner. The DeepCloner implementation must have a one-arg constructor taking a Classloader as parameter.
	at org.powermock.classloading.AbstractClassloaderExecutor.createDeepCloner(AbstractClassloaderExecutor.java:91)
	at org.powermock.classloading.AbstractClassloaderExecutor.executeWithClassLoader(AbstractClassloaderExecutor.java:55)
	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.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)
	at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)
	at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
	at org.powermock.classloading.AbstractClassloaderExecutor.createDeepCloner(AbstractClassloaderExecutor.java:89)
	... 12 more
Caused by: java.lang.ExceptionInInitializerError
	at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:845)
	at com.thoughtworks.xstream.XStream.<init>(XStream.java:574)
	at com.thoughtworks.xstream.XStream.<init>(XStream.java:496)
	at com.thoughtworks.xstream.XStream.<init>(XStream.java:465)
	at com.thoughtworks.xstream.XStream.<init>(XStream.java:411)
	at com.thoughtworks.xstream.XStream.<init>(XStream.java:350)
	at org.powermock.classloading.DeepCloner.<init>(DeepCloner.java:33)
	... 18 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field protected java.lang.reflect.InvocationHandler java.lang.reflect.Proxy.h accessible: module java.base does not "opens java.lang.reflect" to unnamed module @5a69b2d1
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
	at com.thoughtworks.xstream.core.util.Fields.locate(Fields.java:40)
	at com.thoughtworks.xstream.converters.extended.DynamicProxyConverter.<clinit>(DynamicProxyConverter.java:42)
	... 25 more

Failed to instantiate DeepCloner. The DeepCloner implementation must have a one-arg constructor taking a Classloader as parameter.

java.lang.RuntimeException: Failed to instantiate DeepCloner. The DeepCloner implementation must have a one-arg constructor taking a Classloader as parameter.

at org.powermock.classloading.AbstractClassloaderExecutor.createDeepCloner(AbstractClassloaderExecutor.java:91)

at org.powermock.classloading.AbstractClassloaderExecutor.executeWithClassLoader(AbstractClassloaderExecutor.java:55)

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.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)

at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)

at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)

at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)

at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)

at java.base/java.lang.Thread.run(Thread.java:833)

Caused by: java.lang.reflect.InvocationTargetException

at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)

at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)

at org.powermock.classloading.AbstractClassloaderExecutor.createDeepCloner(AbstractClassloaderExecutor.java:89)

... 12 more

Caused by: java.lang.ExceptionInInitializerError

at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:845)

at com.thoughtworks.xstream.XStream.<init>(XStream.java:574)

at com.thoughtworks.xstream.XStream.<init>(XStream.java:496)

at com.thoughtworks.xstream.XStream.<init>(XStream.java:465)

at com.thoughtworks.xstream.XStream.<init>(XStream.java:411)

at com.thoughtworks.xstream.XStream.<init>(XStream.java:350)

at org.powermock.classloading.DeepCloner.<init>(DeepCloner.java:33)

... 18 more

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field protected java.lang.reflect.InvocationHandler java.lang.reflect.Proxy.h accessible: module java.base does not "opens java.lang.reflect" to unnamed module @5a69b2d1

at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)

at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)

at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)

at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)

at com.thoughtworks.xstream.core.util.Fields.locate(Fields.java:40)

at com.thoughtworks.xstream.converters.extended.DynamicProxyConverter.<clinit>(DynamicProxyConverter.java:42)

... 25 more

可是 Powermock 已经长时间没有新版本发布，没有及时跟进 Java 版本的更新。

当时引入 Powermock 的原因是为了解决静态函数的测试问题，但是从 Mockito 3.4.0 版本开始，Mockito 已经支持静态函数测试。

因此，完全可以只使用 Mockto 进行测试。

// https://mvnrepository.com/artifact/org.mockito/mockito-core
testImplementation 'org.mockito:mockito-core:5.3.1'

1 2	// https://mvnrepository.com/artifact/org.mockito/mockito-core testImplementation 'org.mockito:mockito-core:5.3.1'

待测试代码如下:

public class StaticUtils {

    public static String name() {
        return "name";
    }

    public static String getString(String s) {
        return s;
    }
}

public class StaticUtils {

public static String name() {

return "name";

}

public static String getString(String s) {

return s;

}

测试代码如下：

import org.junit.Assert;
import org.junit.Test;
import org.mockito.ArgumentMatchers;
import org.mockito.MockedStatic;
import org.mockito.Mockito;

public class StaticUtilsTest {

    @Test
    public void givenStaticMethodWithNoArgs_whenMocked_thenReturnsMockSuccessfully() {

        Assert.assertEquals(StaticUtils.name(), "name");

        try (MockedStatic<StaticUtils> utils = Mockito.mockStatic(StaticUtils.class)) {
            utils.when(StaticUtils::name).thenReturn("uname");
            Assert.assertEquals(StaticUtils.name(), "uname");

            utils.when(() -> StaticUtils.getString(ArgumentMatchers.anyString())).thenReturn("target");
            Assert.assertEquals(StaticUtils.getString("123"), "target");
        }

        Assert.assertEquals(StaticUtils.name(), "name");
        Assert.assertEquals(StaticUtils.getString("123"), "123");
    }
}

import org.junit.Assert;

import org.junit.Test;

import org.mockito.ArgumentMatchers;

import org.mockito.MockedStatic;

import org.mockito.Mockito;

public class StaticUtilsTest {

@Test

public void givenStaticMethodWithNoArgs_whenMocked_thenReturnsMockSuccessfully() {

Assert.assertEquals(StaticUtils.name(), "name");

try (MockedStatic<StaticUtils> utils = Mockito.mockStatic(StaticUtils.class)) {

utils.when(StaticUtils::name).thenReturn("uname");

Assert.assertEquals(StaticUtils.name(), "uname");

utils.when(() -> StaticUtils.getString(ArgumentMatchers.anyString())).thenReturn("target");

Assert.assertEquals(StaticUtils.getString("123"), "target");

}

Assert.assertEquals(StaticUtils.name(), "name");

Assert.assertEquals(StaticUtils.getString("123"), "123");

}

参考链接

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真机使用Mockito-1.10.19+Dexmaker-1.2在Mock仅包内可见类时报告错误“java.lang.UnsupportedOperationException: cannot proxy inaccessible class ***”

Android真机使用Mockito-1.10.19+Dexmaker-1.2在Mock仅包内可见类时报告如下错误：

java.lang.UnsupportedOperationException: cannot proxy inaccessible class class com.yunos.tv.shake.biz.PackageAccessible
at com.android.dx.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:269)
at com.android.dx.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:56)
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.yunos.tv.shake.biz.PackageAccessibleTest.setUp(PackageAccessibleTest.java:17)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
Caused by: java.lang.IllegalAccessError: Class com.yunos.tv.shake.biz.PackageAccessible extended by class PackageAccessible_Proxy is inaccessible (declaration of 'PackageAccessible_Proxy' appears in /data/data/com.yunos.tv.shake.biz.test/cache/Generated_179875952.jar)
at dalvik.system.DexFile.defineClassNative(Native Method)
at dalvik.system.DexFile.defineClass(DexFile.java:226)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
at dalvik.system.DexPathList.findClass(DexPathList.java:321)
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.android.dx.stock.ProxyBuilder.loadClass(ProxyBuilder.java:284)
at com.android.dx.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:266)
... 15 more

java.lang.UnsupportedOperationException: cannot proxy inaccessible class class com.yunos.tv.shake.biz.PackageAccessible

at com.android.dx.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:269)

at com.android.dx.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:56)

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.yunos.tv.shake.biz.PackageAccessibleTest.setUp(PackageAccessibleTest.java:17)

at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)

at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)

at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)

at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)

Caused by: java.lang.IllegalAccessError: Class com.yunos.tv.shake.biz.PackageAccessible extended by class PackageAccessible_Proxy is inaccessible (declaration of 'PackageAccessible_Proxy' appears in /data/data/com.yunos.tv.shake.biz.test/cache/Generated_179875952.jar)

at dalvik.system.DexFile.defineClassNative(Native Method)

at dalvik.system.DexFile.defineClass(DexFile.java:226)

at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)

at dalvik.system.DexPathList.findClass(DexPathList.java:321)

at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)

at java.lang.ClassLoader.loadClass(ClassLoader.java:511)

at java.lang.ClassLoader.loadClass(ClassLoader.java:469)

at com.android.dx.stock.ProxyBuilder.loadClass(ProxyBuilder.java:284)

at com.android.dx.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:266)

... 15 more

被测试类代码如下:

package com.yunos.tv.shake.biz;

class PackageAccessible {
}

package com.yunos.tv.shake.biz;

class PackageAccessible {

}

注意上述被测试类前面没有声明public，因此默认是default访问，也就是包内可见。我们下面的测试代码跟被测试类属于同一个包名package com.yunos.tv.shake.biz，因此，按理说，是可以正常访问的。
测试类的代码如下：

package com.yunos.tv.shake.biz;

import android.test.AndroidTestCase;

import org.mockito.Mockito;

public class PackageAccessibleTest extends AndroidTestCase {
    protected void setUp() throws Exception {
        super.setUp();
        /*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/
        System.setProperty(
                "dexmaker.dexcache",
                getContext().getCacheDir().getPath());
        PackageAccessible packageAccessible = Mockito.mock(PackageAccessible.class);
    }
}

package com.yunos.tv.shake.biz;

import android.test.AndroidTestCase;

import org.mockito.Mockito;

public class PackageAccessibleTest extends AndroidTestCase {

protected void setUp() throws Exception {

super.setUp();

/*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/

System.setProperty(

"dexmaker.dexcache",

getContext().getCacheDir().getPath());

PackageAccessible packageAccessible = Mockito.mock(PackageAccessible.class);

}

这个问题只在ART虚拟机下面发生异常，相同的代码在Dalvik下面是完全正常的。
问题发生的原因暂时还不能确定，应该是ART虚拟机实现功能的时候的不兼容导致的。
解决方法为在测试代码中声明一个继承被测试类的子类，并且把子类声明成public。
如下：

package com.yunos.tv.shake.biz;

public class PackageAccessibleShadow extends PackageAccessible {
}

package com.yunos.tv.shake.biz;

public class PackageAccessibleShadow extends PackageAccessible {

}

修改后的测试代码如下：

package com.yunos.tv.shake.biz;

import android.test.AndroidTestCase;

import org.mockito.Mockito;

public class PackageAccessibleTest extends AndroidTestCase {
    protected void setUp() throws Exception {
        super.setUp();
        /*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/
        System.setProperty(
                "dexmaker.dexcache",
                getContext().getCacheDir().getPath());
        PackageAccessibleShadow packageAccessible = Mockito.mock(PackageAccessibleShadow.class);
    }
}

package com.yunos.tv.shake.biz;

import android.test.AndroidTestCase;

import org.mockito.Mockito;

public class PackageAccessibleTest extends AndroidTestCase {

protected void setUp() throws Exception {

super.setUp();

/*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/

System.setProperty(

"dexmaker.dexcache",

getContext().getCacheDir().getPath());

PackageAccessibleShadow packageAccessible = Mockito.mock(PackageAccessibleShadow.class);

}

即可解决上述问题。

Android真机使用Mockito-1.10.19+Dexmaker-1.2在Mock继承抽象父类的子类时报告错误“java.lang.AbstractMethodError: abstract method not implemented”

Android真机使用Mockito-1.10.19+Dexmaker-1.2在Mock继承抽象父类的子类时报告如下错误：

java.lang.AbstractMethodError: abstract method not implemented
at org.mockito.internal.invocation.AbstractAwareMethod.isAbstract(Native Method)
at org.mockito.internal.invocation.InvocationImpl.callRealMethod(InvocationImpl.java:109)
at org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:41)
at org.mockito.internal.stubbing.StubbedInvocationMatcher.answer(StubbedInvocationMatcher.java:34)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:91)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38)
at com.google.dexmaker.mockito.InvocationHandlerAdapter.invoke(InvocationHandlerAdapter.java:49)
at ChildCls_Proxy.forParentMock(ChildCls_Proxy.generated)
at com.yunos.tv.shake.biz.DiTingMessageProviderTest.setUp(childClsTest.java:33)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:203)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:177)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1727)

java.lang.AbstractMethodError: abstract method not implemented

at org.mockito.internal.invocation.AbstractAwareMethod.isAbstract(Native Method)

at org.mockito.internal.invocation.InvocationImpl.callRealMethod(InvocationImpl.java:109)

at org.mockito.internal.stubbing.answers.CallsRealMethods.answer(CallsRealMethods.java:41)

at org.mockito.internal.stubbing.StubbedInvocationMatcher.answer(StubbedInvocationMatcher.java:34)

at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:91)

at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)

at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38)

at com.google.dexmaker.mockito.InvocationHandlerAdapter.invoke(InvocationHandlerAdapter.java:49)

at ChildCls_Proxy.forParentMock(ChildCls_Proxy.generated)

at com.yunos.tv.shake.biz.DiTingMessageProviderTest.setUp(childClsTest.java:33)

at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:203)

at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:177)

at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)

at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1727)

父类代码如下:

abstract public class ParentCls {
    abstract public void forChildMock();
}

abstract public class ParentCls {

abstract public void forChildMock();

}

子类代码如下：

public class ChildCls extends ParentCls{

    @Override
    public void forChildMock() {

    }
}

public class ChildCls extends ParentCls{

@Override

public void forChildMock() {

}

测试代码如下：

public class childClsTest extends AndroidTestCase {

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        /*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/
        System.setProperty(
                "dexmaker.dexcache",
                getContext().getCacheDir().getPath());
        ChildCls childCls = Mockito.mock(ChildCls.class);
        Mockito.doCallRealMethod().when(childCls).forParentMock();
        childCls.forParentMock();
    }
}

public class childClsTest extends AndroidTestCase {

@Override

protected void setUp() throws Exception {

super.setUp();

/*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/

System.setProperty(

"dexmaker.dexcache",

getContext().getCacheDir().getPath());

ChildCls childCls = Mockito.mock(ChildCls.class);

Mockito.doCallRealMethod().when(childCls).forParentMock();

childCls.forParentMock();

}

在项目的build.gradle中的声明如下：

//for mockito
androidTestCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile 'com.google.dexmaker:dexmaker:1.2'
androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'

//for mockito

androidTestCompile 'org.mockito:mockito-core:1.10.19'

androidTestCompile 'com.google.dexmaker:dexmaker:1.2'

androidTestCompile 'com.google.dexmaker:dexmaker-mockito:1.2'

这个问题只在Dalvik虚拟机下面发生异常，相同的代码在ART下面是完全正常的。
导致问题发生的原因是Google提供的dexmaker库存在BUG导致的，而这个库，从Maven Center上看，自从2012年开始就没有提供过任何的更新了。
解决方法是不使用Google提供的dexmaker，而是使用com.crittercism.dexmaker修正过这个BUG的版本。

//for mockito
androidTestCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile 'com.crittercism.dexmaker:dexmaker:1.4'
androidTestCompile "com.crittercism.dexmaker:dexmaker-dx:1.4"
androidTestCompile 'com.crittercism.dexmaker:dexmaker-mockito:1.4'

//for mockito

androidTestCompile 'org.mockito:mockito-core:1.10.19'

androidTestCompile 'com.crittercism.dexmaker:dexmaker:1.4'

androidTestCompile "com.crittercism.dexmaker:dexmaker-dx:1.4"

androidTestCompile 'com.crittercism.dexmaker:dexmaker-mockito:1.4'

com.crittercism.dexmaker项目的GitHub地址是https://github.com/crittercism/dexmaker

Android上使用Mockito+Dexmaker报告错误“java.lang.IllegalArgumentException: dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system property) ”

Android上使用Mockito+Dexmaker,测试用例运行时，报告错误:

java.lang.IllegalArgumentException: 
    dexcache == null (and no default could be found; 
    consider setting the 'dexmaker.dexcache' system property)
at com.google.dexmaker.DexMaker.generateAndLoad(DexMaker.java:359)
at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:252)
at com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:54)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26)

java.lang.IllegalArgumentException:

dexcache == null (and no default could be found;

consider setting the 'dexmaker.dexcache' system property)

at com.google.dexmaker.DexMaker.generateAndLoad(DexMaker.java:359)

at com.google.dexmaker.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:252)

at com.google.dexmaker.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:54)

at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:26)

解决方法就是在调用Mockito之前设置环境变量"dexmaker.dexcache",如下：

public class BasicTestCase extends AndroidTestCase {
    @Override
    protected void setUp() throws Exception {
        super.setUp();
        /*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/
        System.setProperty(
                "dexmaker.dexcache",
                getContext().getCacheDir().getPath());
    }
}

public class BasicTestCase extends AndroidTestCase {

@Override

protected void setUp() throws Exception {

super.setUp();

/*解决BUG dexcache == null (and no default could be found; consider setting the 'dexmaker.dexcache' system pr*/

System.setProperty(

"dexmaker.dexcache",

getContext().getCacheDir().getPath());

}

参考链接

Mockito + Dexmaker on Android

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

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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)