我使用了
android-support-v4.jar的
Android兼容包Fragment.但我不能对此进行JUnit测试.
我的主要FragmentActivity类声明如下
public class MyActivityClass extends FragmentActivity{
...............
}
然后在我的测试项目中
public class MyActivityClassTest extends ActivityInstrumentationTestCase2<MyActivityClass> {
public MyActivityClassTest() {
super("com.android.myproject",MyActivityClass.class);
}
@Override
protected void setUp() throws Exception {
super.setUp();
...................
}
public void testPreconditions() {
.................
}
public void testNotNull(){
................
}
}
但是当我运行Android JUnit Test时会产生FailedToCreateTests [Runner：Junit3]
失败追踪
java.lang.RuntimeException: Exception during suite construction at android.test.suitebuilder.TestSuiteBuilder$FailedToCreateTests.testSuiteConstructionFailed(TestSuiteBuilder.java:239) at java.lang.reflect.Method.invokeNative(Native Method) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154) at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:430) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1447) Caused by: java.lang.reflect.InvocationTargetException at com.android.myproject.test.MyActivityClassTest.<init>(MyActivityClassTest.java:28) at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:446) at android.test.suitebuilder.TestMethod.instantiateTest(TestMethod.java:87) at android.test.suitebuilder.TestMethod.createTest(TestMethod.java:73) at android.test.suitebuilder.TestSuiteBuilder.addTest(TestSuiteBuilder.java:263) at android.test.suitebuilder.TestSuiteBuilder.build(TestSuiteBuilder.java:185) at android.test.InstrumentationTestRunner.onCreate(InstrumentationTestRunner.java:336) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3982) at android.app.ActivityThread.access$2900(ActivityThread.java:119) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1901) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4363) at java.lang.reflect.Method.invokeNative(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NoClassDefFoundError: com.android.myproject.MyActivityClass ... 19 more
当我将MyActivityClass更改为扩展Activity时,它工作得很好(MyActivityClass扩展了Activity)
我在我的测试和主项目中使用了相同的android-support-v4.jar
解决方法
ActivityInstrumentationTestCase2与Fragments兼容.您应该只按照
Android Testing: External libraries中提到的步骤进行操作,该步骤已更新,以涵盖android-support-v4.jar的情况.
然后,您将能够编写如下测试：
public void testFragmentManager() {
FragmentActivity activity = getActivity();
assertNotNull(activity.getSupportFragmentManager());
}
或者你需要测试的任何东西.
