Question

我们正在尝试测试应用程序的行为，因为它在不同的生命周期状态（活动，暂停，停止，销毁）中进行，然后在从被破坏状态返回的每个状态中进行测试。

我们遇到的问题是，在调用instrumentation.callActivityOnCreate(testActivity, new Bundle())以在活动被销毁后重新创建活动时会抛出异常。

例外情况如下

04-16 15:40:20.840    8989-8989/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException: No activity
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1044)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1039)
        at android.app.FragmentManagerImpl.dispatchCreate(FragmentManager.java:1835)
        at android.app.Activity.onCreate(Activity.java:916)
        at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:204)
        at com.test.TestActivity.onCreate(TestActivity.java:5)
        at android.app.Activity.performCreate(Activity.java:5158)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
        at com.test.TestActivityInstrumentationTest$3.run(TestActivityInstrumentationTest.java:25)
        at android.app.Instrumentation$SyncRunnable.run(Instrumentation.java:1684)
        at android.os.Handler.handleCallback(Handler.java:747)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:151)
        at android.app.ActivityThread.main(ActivityThread.java:5152)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)

测试代码在

下面

import android.app.Activity;
import android.app.Instrumentation;
import android.os.Bundle;
import android.test.ActivityInstrumentationTestCase2;
import com.test.TestActivity;

public class TestActivityInstrumentationTest extends ActivityInstrumentationTestCase2<TestActivity> {

    public TestActivityInstrumentationTest() {
        super(TestActivity.class);
    }

    public void testActivityOnDestroyedAndStarted() {
        final TestActivity testActivity = getActivity();
        final Instrumentation instrumentation = getInstrumentation();
        instrumentation.runOnMainSync(new Runnable() {
            @Override
            public void run() {
                instrumentation.callActivityOnDestroy(testActivity);
            }
        });

        instrumentation.runOnMainSync(new Runnable() {
            @Override
            public void run() {
                instrumentation.callActivityOnCreate(testActivity, new Bundle());
            }
        });

    }

}

测试活动

import android.support.v4.app.FragmentActivity;

public class TestActivity extends FragmentActivity {

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }
}

有谁知道我们如何避免这种情况？

由于

墩

Answer 1

添加setUp()来实例化您的活动，添加tearDown()来处理测试事件的完成。在这里，我销毁每个测试的活动（我认为这是你想要做的）：

        /**
         * Instance from Solo : provides methods to call the Android user interface.
         * 
         */
        protected Solo solo;

    /**
     * the Activity under test.
     */
    TestActivity activity;

    /*
     * (non-Javadoc)
     * 
     * @see android.test.ActivityInstrumentationTestCase2#setUp()
     */
@Override
protected void setUp() throws Exception {


    activity = getActivity(); 
    // if you are using robotium : 
    solo = new Solo(getInstrumentation(), getActivity());
}

@Override
    public void tearDown() throws Exception {
        // tearDown() is run after a test case has finished.
        // finishOpenedActivities() will finish all the activities that have
        // been opened during the test execution.
        solo.finishOpenedActivities();
        super.tearDown();
    }

测试您是否在每次测试开始时都获得了一个Activity实例：

 public void testActivityOnDestroyedAndStarted() {
// ensure a valid handle to the activity has been returned
        assertNotNull(activity);
}

当您想测试onDestroy时，请尝试以下代码：

    instrumentation.runOnMainSync(new Runnable() {
            @Override
            public void run() {
// to get the activity that you are testing
                activity = getActivity();
// check that you are really having a context
assertNotNull(activity);
// and here you are recreating the activity
                instrumentation.callActivityOnCreate(activity, new Bundle());
            }
        });

针对活动的Android自动化测试被破坏并重新创建

1 个答案: