Android - 在ActivityUnitTestCase测试类中的startActivity方法上的AssertionFailedError

Question

我正在尝试测试模块中的活动.我只是试图在测试方法中开始这个活动,但我总是有一个AssertionFailedError.我在网上搜索了这个问题,但找不到任何解决方案.任何帮助表示赞赏.

这是我的测试类:

public class ContactActivityTest extends ActivityUnitTestCase<ContactActivity> {

    public ContactActivityTest() {
        super(ContactActivity.class);
    }


    @Override
    public void setUp() throws Exception {
        super.setUp();
    }


    public void testWebViewHasNotSetBuiltInZoomControls() throws Exception {
        Intent intent = new Intent(getInstrumentation().getTargetContext(),
                ContactActivity.class);
        startActivity(intent, null, null);
    }


    @Override
    public void tearDown() throws Exception {
        super.tearDown();
    }
}

这是错误:

junit.framework.AssertionFailedError
at android.test.ActivityUnitTestCase.startActivity(ActivityUnitTestCase.java:147)
at com.modilisim.android.contact.ContactActivityTest.testWebViewHasNotSetBuiltInZoomControls(ContactActivityTest.java:29)
at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
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:1763)

问候.

Answer 1

ActivityUnitTestCase的startActivity()方法只需要在主线程上调用.

这可以通过以下方式完成:

1. 在测试方法之前使用@UiThreadTest批注:

   @UiThreadTest
   public void testWebViewHasNotSetBuiltInZoomControls() throws Exception {
       Intent intent = new Intent(getInstrumentation().getTargetContext(),
               ContactActivity.class);
       startActivity(intent, null, null);
   }
   

2. 使用Instrumentation类的runOnMainSync方法:

   public void testWebViewHasNotSetBuiltInZoomControls() throws Exception {
       final Intent intent = new Intent(getInstrumentation().getTargetContext(),
               ContactActivity.class);
   
       getInstrumentation().runOnMainSync(new Runnable() {
           @Override
           public void run() {
               startActivity(intent, null, null);
              }
           });
    }
   

我为什么是对的？