深海游弋的鱼 – 第 38 页 – 智障儿童欢乐多

2021年8月14日，Debian11正式发布了，代号“bullseye” Debian 11 (bullseye), 64-bit PC 的发行说明

下面演示下Debian10升级到Debian11

Jdk 6260652 Bug

最近在看JDK的源码：CopyOnWriteArrayList.java和ArrayList.java，这2个类的构造函数，注释中有一句话看不懂。

public ArrayList(Collection<? extends E> c) {
    elementData = c.toArray();
    size = elementData.length;
    // c.toArray might (incorrectly) not return Object[] (see 6260652)
    if (elementData.getClass() != Object[].class)
        elementData = Arrays.copyOf(elementData, size, Object[].class);
 }

 public CopyOnWriteArrayList(Collection<? extends E> c) {
    Object[] elements = c.toArray();
    // c.toArray might (incorrectly) not return Object[] (see 6260652)
    if (elements.getClass() != Object[].class)
        elements = Arrays.copyOf(elements, elements.length, Object[].class);
    setArray(elements);
 }

public ArrayList(Collection<? extends E> c) {

elementData = c.toArray();

size = elementData.length;

// c.toArray might (incorrectly) not return Object[] (see 6260652)

if (elementData.getClass() != Object[].class)

elementData = Arrays.copyOf(elementData, size, Object[].class);

}

public CopyOnWriteArrayList(Collection<? extends E> c) {

Object[] elements = c.toArray();

// c.toArray might (incorrectly) not return Object[] (see 6260652)

if (elements.getClass() != Object[].class)

elements = Arrays.copyOf(elements, elements.length, Object[].class);

setArray(elements);

}

上网查了一下资料，才知道see 6260652 这个编号代表JDK bug库中的编号。可以去官网查看bug详情

http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6260652

http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6515694

6260652 和6515694这2个bug，貌似是同一个问题。这个bug是什么意思呢？我们先来看看一些测试代码:

public static void test1()
{
    SubClass[] subArray = {new SubClass(), new SubClass()};
    System.out.println(subArray.getClass());

    // class [Lcollection.SubClass;
    BaseClass[] baseArray = subArray;
    System.out.println(baseArray.getClass());

    // java.lang.ArrayStoreException
    baseArray[0] = new BaseClass();
}

public static void test2()
{
    List<String> list = Arrays.asList("abc");

    // class java.util.Arrays$ArrayList
    System.out.println(list.getClass());

    // class [Ljava.lang.String;
    Object[] objArray = list.toArray();
    System.out.println(objArray.getClass());

    objArray[0] = new Object(); // cause ArrayStoreException
}

public static void test3()
{
    List<String> dataList = new ArrayList<String>();
    dataList.add("one");
    dataList.add("two");

    Object[] listToArray = dataList.toArray();

    // class [Ljava.lang.Object;返回的是Object数组
    System.out.println(listToArray.getClass());
    listToArray[0] = "";
    listToArray[0] = 123;
    listToArray[0] = new Object();

}

public static void test1()

{

SubClass[] subArray = {new SubClass(), new SubClass()};

System.out.println(subArray.getClass());

// class [Lcollection.SubClass;

BaseClass[] baseArray = subArray;

System.out.println(baseArray.getClass());

// java.lang.ArrayStoreException

baseArray[0] = new BaseClass();

}

public static void test2()

{

List<String> list = Arrays.asList("abc");

// class java.util.Arrays$ArrayList

System.out.println(list.getClass());

// class [Ljava.lang.String;

Object[] objArray = list.toArray();

System.out.println(objArray.getClass());

objArray[0] = new Object(); // cause ArrayStoreException

}

public static void test3()

{

List<String> dataList = new ArrayList<String>();

dataList.add("one");

dataList.add("two");

Object[] listToArray = dataList.toArray();

// class [Ljava.lang.Object;返回的是Object数组

System.out.println(listToArray.getClass());

listToArray[0] = "";

listToArray[0] = 123;

listToArray[0] = new Object();

}

1、关于test1()

SubClass 继承自BaseClass，由于SubClass数组中每一个元素都是SubClass对象，所以

BaseClass[] baseArray = subArray;

1	BaseClass[] baseArray = subArray;

这种强制类型转换不会报错。这其实就是java对象的向上转型，子类数组转换成父类数组是允许的。但是由于数组中元素类型都是SubClass类型的，所以

baseArray[0] = new BaseClass();

1	baseArray[0] = new BaseClass();

会报错

java.lang.ArrayStoreException

1	java.lang.ArrayStoreException

这也就是说假如我们有1个Object[]数组，并不代表着我们可以将Object对象存进去，这取决于数组中元素实际的类型。

2、关于test2()

List<String> list = Arrays.asList("abc");

1	List<String> list = Arrays.asList("abc");

需要注意，可以知道返回的实际类型是

java.util.Arrays$ArrayList

1	java.util.Arrays$ArrayList

而不是

ArrayList

ArrayList

我们调用

Object[] objArray = list.toArray();

1	Object[] objArray = list.toArray();

返回是String[]数组，所以我们不能将Object对象，放到objArray数组中。

3、关于test3()

ArrayList对象的toArray()返回就是Object[]数组，所以我们可以将任意对象存放到返回的Object[]数组中。

通过test2和test3可以看出，如果我们有1个

List<String> stringList

1	List<String> stringList

对象，当我么调用

Object[] objectArray = stringList.toArray();

1	Object[] objectArray = stringList.toArray();

的时候，objectArray 并不一定能够放置Object对象。这就是源码中的注释：

//c.toArray might (incorrectly) not return Object[] (see 6260652)

1	//c.toArray might (incorrectly) not return Object[] (see 6260652)

为了考虑这种情况，所以源码中进行了if判断，来防止错误的数组对象导致异常。

Arrays.copyOf(elementData, size, Object[].class);

1	Arrays.copyOf(elementData, size, Object[].class);

这个方法就是用来创建1个Object[]数组，这样数组中就可以存放任意对象了。

参考链接

Jdk 6260652 Bug

Android跳转权限设置页面

最近项目上有个需求，读取通讯录。当用户点了拒绝访问通讯录或者其他权限，导致无法使用，这时候我想重新打开权限设置，但是对于很多小白用户不知道怎么设置，这就会导致用户体验不友好的一面。

之前已经有人写过类似的文章，不过都比较分散，经实测将这些方法总结了一下。

要跳转的权限设置界面如图：目前手上只有华为和小米作为测试

继续阅读Android跳转权限设置页面

国产手机Android R(Android 11)系统执行Espresso UI(AndroidX)遇到的问题总结

最近在 Android R(Android 11)系统上执行以前写的Espresso UI(AndroidX)单元测试用例的时候，发现在 联想拯救者电竞手机Pro(128GB) 系统版本 12.5.225上，如果测试用例申请了通讯录写入权限，如下：

<uses-permission android:name="android.permission.WRITE_CONTACTS" />

1	<uses-permission android:name="android.permission.WRITE_CONTACTS" />

那么测试用例执行的时候，会报告如下错误：

Test running failed:Process crashed.

1	Test running failed:Process crashed.

详细的logcat日志如下：

D/Zygote: Forked child process 10664
I/ActivityManager: Start proc 10664:xx.test/u0a274 for added application xx.test
I/AutoRun: AutoRunServices: ProcessStateHandler: sendKillAppRequest: [uid = 10274, pid = 10664, package name = xx.test mOtherPids = null, mStartupTime = 0, mDelay = 0, mCount = 0]
I/adbd: jdwp connection from 10664
D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar
D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar
I/yboard.biz.tes: The ClassLoaderContext is a special shared library.
D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar
D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar
I/Perf: Connecting to perf service.
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
I/MonitoringInstr: Instrumentation started!
I/AndroidJUnitRunner: Waiting for debugger to connect...
I/System.out: Sending WAIT chunk
I/ActivityManager: Killing 10664:xx.test/u0a274 (adj 0): permissions revoked
I/Zygote: Process 10664 exited due to signal 9 (Killed)
I/libprocessgroup: Successfully killed process cgroup uid 10274 pid 10664 in 44ms

D/Zygote: Forked child process 10664

I/ActivityManager: Start proc 10664:xx.test/u0a274 for added application xx.test

I/AutoRun: AutoRunServices: ProcessStateHandler: sendKillAppRequest: [uid = 10274, pid = 10664, package name = xx.test mOtherPids = null, mStartupTime = 0, mDelay = 0, mCount = 0]

I/adbd: jdwp connection from 10664

D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar

I/yboard.biz.tes: The ClassLoaderContext is a special shared library.

D/ApplicationLoaders: Returning zygote-cached class loader: /system/framework/android.test.base.jar

I/Perf: Connecting to perf service.

D/NetworkSecurityConfig: No Network Security Config specified, using platform default

I/MonitoringInstr: Instrumentation started!

I/AndroidJUnitRunner: Waiting for debugger to connect...

I/System.out: Sending WAIT chunk

I/ActivityManager: Killing 10664:xx.test/u0a274 (adj 0): permissions revoked

I/Zygote: Process 10664 exited due to signal 9 (Killed)

I/libprocessgroup: Successfully killed process cgroup uid 10274 pid 10664 in 44ms

目前测试发现，即使通过GrantPermissionRule授予权限，也是没用的，代码根本来不及执行，应用就一下被系统杀死了。

目前只能是不测试这部分功能。

@Rule
public final GrantPermissionRule rule = GrantPermissionRule.grant(android.Manifest.permission.WRITE_CONTACTS);

1 2	@Rule public final GrantPermissionRule rule = GrantPermissionRule.grant(android.Manifest.permission.WRITE_CONTACTS);

在OPPO/VIVO/小米等手机上，需要手工开启 后台弹出界面权限 才能执行单元测试。有个思路是通过UI Automator来自动开启这个权限，暂时还需要测试一下。

参考链接

Android R(11) ContentResolver报错java.lang.IllegalArgumentException: Invalid token limit

在Android 11执行如下代码：

/**
 * 保存拍照的图片是否已经完成
 *
 * @param context Context 对象
 * @return 查询成功返回 true ,否则返回false
 */
private static boolean isSavePictureComplete(@NonNull final Context context, long takeTime) {
    //扫描图片
    final Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
    final ContentResolver resolver = context.getContentResolver();
    final Cursor cursor = resolver.query(uri, new String[]{
            MediaStore.Images.Media.DATE_ADDED, 
            MediaStore.Images.Media._ID, 
            MediaStore.Images.Media.SIZE },
            MediaStore.MediaColumns.SIZE + ">0",
            null,
            MediaStore.Files.FileColumns._ID + " DESC limit 1 offset 0");

    //读取扫描到的图片
    if ((null != cursor) && (cursor.getCount() > 0) && cursor.moveToFirst()) {
        //获取图片时间
        long time = cursor.getLong(cursor.getColumnIndex(MediaStore.Images.Media.DATE_ADDED));
        int id = cursor.getInt(cursor.getColumnIndex(MediaStore.Images.Media._ID));
        if (String.valueOf(time).length() < 13) {
            time *= 1000;
        }
        cursor.close();
        // 如果照片的插入时间大于相机的拍照时间，就认为是拍照图片已插入
        return time + 1000 < takeTime; 
    }
    return true;
}

/**

* 保存拍照的图片是否已经完成

* @param context Context 对象

* @return 查询成功返回 true ,否则返回false

private static boolean isSavePictureComplete(@NonNull final Context context, long takeTime) {

//扫描图片

final Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

final ContentResolver resolver = context.getContentResolver();

final Cursor cursor = resolver.query(uri, new String[]{

MediaStore.Images.Media.DATE_ADDED,

MediaStore.Images.Media._ID,

MediaStore.Images.Media.SIZE },

MediaStore.MediaColumns.SIZE + ">0",

null,

MediaStore.Files.FileColumns._ID + " DESC limit 1 offset 0");

//读取扫描到的图片

if ((null != cursor) && (cursor.getCount() > 0) && cursor.moveToFirst()) {

//获取图片时间

long time = cursor.getLong(cursor.getColumnIndex(MediaStore.Images.Media.DATE_ADDED));

int id = cursor.getInt(cursor.getColumnIndex(MediaStore.Images.Media._ID));

if (String.valueOf(time).length() < 13) {

time *= 1000;

}

cursor.close();

// 如果照片的插入时间大于相机的拍照时间，就认为是拍照图片已插入

return time + 1000 < takeTime;

}

return true;

}

会出现如下错误：

java.lang.IllegalArgumentException: Invalid token limit
        at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:172)
        at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:142)
        at android.content.ContentProviderProxy.query(ContentProviderNative.java:472)
        at android.content.ContentResolver.query(ContentResolver.java:1197)
        at android.content.ContentResolver.query(ContentResolver.java:1128)
        at android.content.ContentResolver.query(ContentResolver.java:1084)

java.lang.IllegalArgumentException: Invalid token limit

at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:172)

at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:142)

at android.content.ContentProviderProxy.query(ContentProviderNative.java:472)

at android.content.ContentResolver.query(ContentResolver.java:1197)

at android.content.ContentResolver.query(ContentResolver.java:1128)

at android.content.ContentResolver.query(ContentResolver.java:1084)

原因为 Android 11 上使用 ContentResolver 的时候，已经不允许进行 SQL语句拼接，主要是为了防止 SQL注入攻击。

代码参考如下：

/**
 * 保存拍照的图片是否已经完成
 *
 * @param context Context 对象
 * @return 查询成功返回 true ,否则返回false
 */
private static boolean isSavePictureComplete(@NonNull final Context context, long takeTime) {
    final Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
    final String[] columns = new String[]{
                MediaStore.Images.Media.DATE_ADDED,
                MediaStore.Images.Media._ID,
                MediaStore.Images.Media.SIZE};
    //扫描图片
    final ContentResolver contentResolver = context.getContentResolver();
    Cursor cursor = null;
    try {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q/*29*/) {
            final Bundle bundle = new Bundle();
            bundle.putString(ContentResolver.QUERY_ARG_SQL_SELECTION, MediaStore.MediaColumns.SIZE + " > ?");
            bundle.putStringArray(ContentResolver.QUERY_ARG_SQL_SELECTION_ARGS, new String[]{"0"});
            bundle.putStringArray(ContentResolver.QUERY_ARG_SORT_COLUMNS, new String[]{MediaStore.Files.FileColumns._ID});
            bundle.putInt(ContentResolver.QUERY_ARG_SORT_DIRECTION, ContentResolver.QUERY_SORT_DIRECTION_DESCENDING);
            bundle.putInt(ContentResolver.QUERY_ARG_LIMIT, 1);
            bundle.putInt(ContentResolver.QUERY_ARG_OFFSET, 0);
            cursor = contentResolver.query(uri, columns,
                    bundle, 
                    null);
        } else {
            cursor = contentResolver.query(uri, columns,
                    MediaStore.MediaColumns.SIZE + ">0",
                    null,
                    MediaStore.Files.FileColumns._ID + " DESC limit 1 offset 0");
        }

        //读取扫描到的图片
        if ((null != cursor) && (cursor.getCount() > 0) && cursor.moveToFirst()) {
            //获取图片时间
            long time = cursor.getLong(cursor.getColumnIndex(MediaStore.Images.Media.DATE_ADDED));
            if (String.valueOf(time).length() < 13) {
                time *= 1000;
            }
            // 如果照片的插入时间大于相机的拍照时间，就认为是拍照图片已插入
            return time + 1000 < takeTime;
        }
    } finally {
        if (null != cursor) {
            cursor.close();
        }
    }
    return true;
}

/**

* 保存拍照的图片是否已经完成

* @param context Context 对象

* @return 查询成功返回 true ,否则返回false

private static boolean isSavePictureComplete(@NonNull final Context context, long takeTime) {

final Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;

final String[] columns = new String[]{

MediaStore.Images.Media.DATE_ADDED,

MediaStore.Images.Media._ID,

MediaStore.Images.Media.SIZE};

//扫描图片

final ContentResolver contentResolver = context.getContentResolver();

Cursor cursor = null;

try {

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q/*29*/) {

final Bundle bundle = new Bundle();

bundle.putString(ContentResolver.QUERY_ARG_SQL_SELECTION, MediaStore.MediaColumns.SIZE + " > ?");

bundle.putStringArray(ContentResolver.QUERY_ARG_SQL_SELECTION_ARGS, new String[]{"0"});

bundle.putStringArray(ContentResolver.QUERY_ARG_SORT_COLUMNS, new String[]{MediaStore.Files.FileColumns._ID});

bundle.putInt(ContentResolver.QUERY_ARG_SORT_DIRECTION, ContentResolver.QUERY_SORT_DIRECTION_DESCENDING);

bundle.putInt(ContentResolver.QUERY_ARG_LIMIT, 1);

bundle.putInt(ContentResolver.QUERY_ARG_OFFSET, 0);

cursor = contentResolver.query(uri, columns,

bundle,

null);

} else {

cursor = contentResolver.query(uri, columns,

MediaStore.MediaColumns.SIZE + ">0",

null,

MediaStore.Files.FileColumns._ID + " DESC limit 1 offset 0");

}

//读取扫描到的图片

if ((null != cursor) && (cursor.getCount() > 0) && cursor.moveToFirst()) {

//获取图片时间

long time = cursor.getLong(cursor.getColumnIndex(MediaStore.Images.Media.DATE_ADDED));

if (String.valueOf(time).length() < 13) {

time *= 1000;

}

// 如果照片的插入时间大于相机的拍照时间，就认为是拍照图片已插入

return time + 1000 < takeTime;

}

} finally {

if (null != cursor) {

cursor.close();

}

return true;

}

参考链接

limiting number of rows in a ContentResolver.query() function

Robolectric/PowerMock测试AIDL相关类

在编写单元测试用例的时候，如果被测试类是与AIDL相关的类，不管是直接调用，还是被测试类继承了AIDL生成的类，由于AIDL类是在编译期间动态生成的，并且每次构建都会重新生成一次（类名相同，但是Hash可能会变，文件修改日期必然变更）。

然而，由于PowerMock调用Objenesis库为了加快编译速度，会缓存同名的类，这样导致在运行时进行类型转换的时候无法通过校验，报告如下错误：

org.mockito.exceptions.base.MockitoException: 
    ClassCastException occurred while creating the mockito proxy :
      class to mock : 'com.squareup.otto.Bus', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'
      created class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'
      proxy instance class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.mockito.internal.creation.util.SearchingClassLoader@618ff5c2'
      instance creation by : ObjenesisInstantiator

    You might experience classloading issues, disabling the Objenesis cache *might* help (see MockitoConfiguration)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:61)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49)
        at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24)
        at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45)
        at com.acme.android.myapp.services.gcm.handlers.RequestLogoutHandlerTest.setup(RequestLogoutHandlerTest.java:39)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
        at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:251)
        at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:188)
        at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:54)
        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:152)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runners.Suite.runChild(Suite.java:128)
        at org.junit.runners.Suite.runChild(Suite.java:27)
        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.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
        at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
        at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
    Caused by: java.lang.ClassCastException: Cannot cast com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196 to com.squareup.otto.Bus
        at java.lang.Class.cast(Class.java:3369)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:59)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49)
        at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24)
        at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45)
        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)
        ... 36 more


    org.mockito.exceptions.base.MockitoException: 
    ClassCastException occurred while creating the mockito proxy :
      class to mock : 'com.squareup.otto.Bus', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'
      created class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'
      proxy instance class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.mockito.internal.creation.util.SearchingClassLoader@618ff5c2'
      instance creation by : ObjenesisInstantiator

    You might experience classloading issues, disabling the Objenesis cache *might* help (see MockitoConfiguration)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:61)
        at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49)
        at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24)
        at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45)
        at com.acme.android.myapp.services.gcm.handlers.RequestLogoutHandlerTest.setup(RequestLogoutHandlerTest.java:39)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
        at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:251)
        at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:188)
        at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:54)
        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:152)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runners.Suite.runChild(Suite.java:128)
        at org.junit.runners.Suite.runChild(Suite.java:27)
        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.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
        at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
        at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:6

100

101

102

org.mockito.exceptions.base.MockitoException:

ClassCastException occurred while creating the mockito proxy :

class to mock : 'com.squareup.otto.Bus', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'

created class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@1593948d'

proxy instance class : 'com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196', loaded by classloader : 'org.mockito.internal.creation.util.SearchingClassLoader@618ff5c2'

instance creation by : ObjenesisInstantiator

You might experience classloading issues, disabling the Objenesis cache *might* help (see MockitoConfiguration)

at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:61)

at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49)

at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24)

at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45)

at com.acme.android.myapp.services.gcm.handlers.RequestLogoutHandlerTest.setup(RequestLogoutHandlerTest.java:39)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)

at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:251)

at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:188)

at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:54)

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:152)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.runners.Suite.runChild(Suite.java:128)

at org.junit.runners.Suite.runChild(Suite.java:27)

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.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)

at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)

at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

Caused by: java.lang.ClassCastException: Cannot cast com.squareup.otto.Bus$$EnhancerByMockitoWithCGLIB$$82a3b196 to com.squareup.otto.Bus

at java.lang.Class.cast(Class.java:3369)

at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:59)

at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49)

at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24)

at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45)

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)

... 36 more