FragmentActivity Junit测试

Question

我使用Fragment了Android兼容包,使用了android-support-v4.jar.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(){
        ................
    }
}

但当我作为Android JUnit Test产品故障跟踪运行FailedToCreateTests[Runner:Junit3]

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

当我改为MyActivityClass扩展Activity它工作正常(MyActivityClass extends Activity)
我android-support-v4.jar在我的测试和主项目中使用了相同的

Answer 1

ActivityInstrumentationTestCase2兼容Fragments.您应该只遵循Android测试中提到的步骤:外部库,已经更新以涵盖其中的情况android-support-v4.jar.

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.

Answer 2

我找到了解决方案

问题是

Caused by: java.lang.NoClassDefFoundError: com.android.myproject.MyActivityClass

它找不到类路径,即使我在两个项目中引用相同的jar(我也试过为项目使用单独的jar)

现在,我在同一个项目中创建了我的测试环境,然后就可以了

在我的 AndroidManifest.xml

<manifest...>
    <!-- For doing JUnit test, Instrumentation Start (remove later) -->
    <instrumentation
        android:targetPackage="com.pe.android.isccasinos"
        android:name="android.test.InstrumentationTestRunner" />
    <!-- For doing JUnit test, Instrumentation End (remove later) -->   
    <application ...>
    ................
    <!-- For doing JUnit test, add library starting (remove later) -->
        <uses-library
            android:name="android.test.runner" />
        <!-- For doing JUnit test, add library ending (remove later) -->
    </application>
<manifest>

然后我在我的特殊包中添加了我的Testing类进行测试

extends ActivityInstrumentationTestCase2<fragmentActivity>

现在一切正常:)