Android測試教程(14)：ActivityInstrumentationTestCase2樣本

ActivityInstrumentationTestCase2 用來測試單個的Activity，被測試的Activity可以使用InstrumentationTestCase.launchActivity 來啟動，然後你能夠直接操作被測試的Activity。

ActivityInstrumentationTestCase2 也支援：

可以在UI線程中運行測試方法.

可以注入Intent對象到被測試的Activity中

ActivityInstrumentationTestCase2 取代之前的ActivityInstrumentationTestCase ，新的測試應該使用ActivityInstrumentationTestCase2作為基類。

Focus2ActivityTest 的代碼如下，用於測試Android ApiDemos樣本解析(116):Views->Focus->2. Horizontal

public class Focus2ActivityTest      extends ActivityInstrumentationTestCase2<Focus2> {  private Button mLeftButton;      private Button mCenterButton;      private Button mRightButton;      public Focus2ActivityTest() {      super("com.example.android.apis", Focus2.class);  }      @Override  protected void setUp() throws Exception {      super.setUp();      final Focus2 a = getActivity();      mLeftButton = (Button) a.findViewById(R.id.leftButton);      mCenterButton = (Button) a.findViewById(R.id.centerButton);      mRightButton = (Button) a.findViewById(R.id.rightButton);      }                @MediumTest  public void testPreconditions() {      assertTrue("center button should be right of left button",      mLeftButton.getRight() < mCenterButton.getLeft());      assertTrue("right button should be right of center button",      mCenterButton.getRight() < mRightButton.getLeft());      assertTrue("left button should be focused", mLeftButton.isFocused());      }      @MediumTest  public void testGoingRightFromLeftButtonJumpsOverCenterToRight() {      sendKeys(KeyEvent.KEYCODE_DPAD_RIGHT);      assertTrue("right button should be focused", mRightButton.isFocused());      }      @MediumTest  public void testGoingLeftFromRightButtonGoesToCenter()  {      getActivity().runOnUiThread(new Runnable() {      public void run() {      mRightButton.requestFocus();      }      });      // wait for the request to go through      getInstrumentation().waitForIdleSync();      assertTrue(mRightButton.isFocused());      sendKeys(KeyEvent.KEYCODE_DPAD_LEFT);      assertTrue("center button should be focused",      mCenterButton.isFocused()); }     }

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