我一直在这里阅读很多链接,例如github和robolectric博客,但找不到有效的解决方案(已经使用Robolectric 2.0 alpha 2)。
更新:即使我们将SherlockFragment
替换为android.support.v4.app.Fragment
,也会发生此问题。
遵循此tip之后,我能够测试SherlockFragmentActivity,但是当我将此 fragment (即SherlockFragment)添加到我的 Activity xml中时:
<fragment
android:name="com.marcelopazzo.fragmentapplication.ExampleFragment"
android:id="@+id/example_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
SherlockFragment类:
public class ExampleFragment extends SherlockFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.example_fragment, container, false);
}
}
这是该 fragment 夸大的布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/hello_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_again" />
</LinearLayout>
我收到以下错误:
java.lang.NullPointerException
at org.robolectric.shadows.ShadowViewGroup.addView(ShadowViewGroup.java:69)
at android.view.ViewGroup.addView(ViewGroup.java)
at org.robolectric.res.builder.LayoutBuilder.constructFragment(LayoutBuilder.java:150)
at org.robolectric.res.builder.LayoutBuilder.create(LayoutBuilder.java:104)
at org.robolectric.res.builder.LayoutBuilder.doInflate(LayoutBuilder.java:42)
at org.robolectric.res.builder.LayoutBuilder.doInflate(LayoutBuilder.java:45)
at org.robolectric.res.builder.LayoutBuilder.inflateView(LayoutBuilder.java:62)
at org.robolectric.shadows.ShadowLayoutInflater.inflate(ShadowLayoutInflater.java:50)
at org.robolectric.shadows.ShadowLayoutInflater.inflate(ShadowLayoutInflater.java:55)
at android.view.LayoutInflater.inflate(LayoutInflater.java)
at com.squareup.test.ActionBarSherlockRobolectric.setContentView(ActionBarSherlockRobolectric.java:38)
at com.actionbarsherlock.app.SherlockFragmentActivity.setContentView(SherlockFragmentActivity.java:262)
at com.marcelopazzo.fragmentapplication.MainActivity.onCreate(MainActivity.java:13)
at com.marcelopazzo.fragmentapplication.MainActivityTest.setUp(MainActivityTest.java:33)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:110)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:234)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:133)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:114)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:188)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:166)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:86)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:101)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:74)
这是我正在使用的测试类:
@RunWith(RobolectricTestRunner.class)
public class MainActivityTest {
private MainActivity activity;
private TextView textView;
public static final String GREETINGS = "Hello world!";
@Before
public void setUp() {
ActionBarSherlock.registerImplementation(ActionBarSherlockRobolectric.class);
ActionBarSherlock.unregisterImplementation(ActionBarSherlockNative.class);
ActionBarSherlock.unregisterImplementation(ActionBarSherlockCompat.class);
activity = new MainActivity();
activity.onCreate(null);
textView = (TextView) activity.findViewById(R.id.hello);
}
@Test
public void shouldGreet() {
assertEquals(GREETINGS, textView.getText());
}
}
该应用程序在设备上运行正常。
我在这里想念什么?
ps:完整的源代码可在github上找到
编辑:还测试了平方/主(2.0 alpha 3 square 5)分支中的代码,并得到了相同的问题。
检查
LayoutBuilder.constructFragment
,我认为问题是activity.getSupportFragmentManager().beginTransaction().add(fragment, tag).commit()
不能与SherlockFragment一起使用,因此fragment.getView()
返回null。我不确定我是否可以采取任何措施来解决此问题……我已经在检查是否可以在robolectric方面进行修复,如果有人对此有任何建议,请告诉我。
最佳答案
您可以尝试使用Robolectric 2.0的新ActivityController,它可以解决一些经常出现的调度/操作顺序问题。
MainActivity activity = Robolectric.buildActivity(MainActivity.class)
.create().get();
它安排在调用onCreate()期间临时暂停主循环程序。
关于android - Robolectric:如何测试包含SherlockFragment的 Activity ?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/16179675/