Android-ActivityUnitTestCase测试类中startActivity方法上的AssertionFailedError

问题描述

我正在尝试测试模块中的活动.我只是想在测试方法中开始此活动，但是我总是有一个AssertionFailedError.我在网上搜索了此问题，但找不到任何解决方案.感谢您的帮助.

I am trying to test an activity in a module. I am just trying to start this activity in the test method, but I always have a AssertionFailedError. I searched the web for this issue but could not find any solution. Any help is appreciated.

这是我的测试课:

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)

致谢.

推荐答案

ActivityUnitTestCase的 startActivity()方法仅需要在主线程上调用.

ActivityUnitTestCase's startActivity() method needs to be called on the main thread only.

这可以通过以下方式完成:

This can be done in the following ways:

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);
}

使用 runOnMainSync 方法:

Use the runOnMainSync method of the Instrumentation class:

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);
           }
        });
 }

我为什么正确?

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