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我正在使用Robolectric来测试扩展BaseActivity的Activity(FooActivity),而BaseActivity正在扩展Activity,但我在Activity.onCreate()中得到一个NullPointerException

FooActivity.java扩展了BaseActivity.java

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
}

BaseActivity.java扩展了Activity

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    this.mActivityCreated = true;
    mFragmentMgr = getFragmentManager();
    this.setContentView(R.layout.main);
}

测试:FooActivityTest

@Before
public void setUp() {
    mActivity = new FooActivity();
}


@Test
public void test() {

    Intent i = new Intent();
    i.putExtra("isTesting", true);
    mActivity.setIntent(i);
    mActivity.onCreate(null);
}

错误

java.lang.NullPointerException
at android.app.Activity.onCreate(Activity.java:874)
at com.pdi.enjoy.activities.BaseActivity.onCreate(BaseActivity.java:129)
at com.pdi.enjoy.activities.FooActivityTest.onCreate(FooActivity.java:107)
at com.pdi.enjoy.activities.FooActivityTest.test(FooActivity.java:32)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:234)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) …