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PORobolectric: How can I test an activity that contains a SherlockFragment?
 

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    <p>I have been reading a lot of links from here, github and robolectric blog but couldn't find a working solution yet (already using Robolectric 2.0 alpha 2). </p> <p><strong>UPDATE:</strong> The problem also happens even if we replace <code>SherlockFragment</code> for <code>android.support.v4.app.Fragment</code>.</p> <p>I was able to test a SherlockFragmentActivity after following this <a href="http://robolectric.blogspot.com.br/2013/03/using-actionbarsherlock-with.html" rel="noreferrer">tip</a>, but when I add this fragment, that is a SherlockFragment, to my activity xml:</p> <pre><code>&lt;fragment android:name="com.marcelopazzo.fragmentapplication.ExampleFragment" android:id="@+id/example_fragment" android:layout_width="fill_parent" android:layout_height="wrap_content" /&gt; </code></pre> <p>The SherlockFragment class:</p> <pre><code>public class ExampleFragment extends SherlockFragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.example_fragment, container, false); } } </code></pre> <p>And this is the layout that is being inflated by the fragment:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" &gt; &lt;TextView android:id="@+id/hello_again" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_again" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>I get the following error:</p> <pre><code>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) </code></pre> <p>This is the test class that I am using:</p> <pre><code>@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()); } } </code></pre> <p>The application is working fine on the device.</p> <p>What am I missing here?</p> <p>ps: The full source code is available on <a href="https://github.com/marcelopazzo/RobolectricSample" rel="noreferrer">github</a></p> <p>Edit: Also tested with the code from square/master (2.0 alpha 3 square 5) branch and got the same problem. Checking the <code>LayoutBuilder.constructFragment</code>, I think the problem is that <code>activity.getSupportFragmentManager().beginTransaction().add(fragment, tag).commit()</code> is not working with SherlockFragment, so <code>fragment.getView()</code> is returning null.</p> <p>I'm not sure if I can do anything on my side to fix this... I'm already checking if I can fix it on robolectric's side, please let me know if anyone have any tip on this.</p>
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