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 也支持:
ActivityInstrumentationTestCase2 取代之前的 ActivityInstrumentationTestCase ,新的測試應(yīng)該使用 ActivityInstrumentationTestCase2 作為基類。
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Focus2ActivityTest 的代碼如下,用於測試 Android ApiDemos 示例解析(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());
}
}
etUp 中初始化 mLeftButton,mCenterButton 和 mRightButton,調(diào)用每個測試方法之前,setUp 都會被調(diào)用。
testPreconditions 通常為第一個測試方法,用來檢測後續(xù)的測試環(huán)境是否符合條件。
testGoingRightFromLeftButtonJumpsOverCenterToRight 中調(diào)用 sendKeys 可以模擬按鍵消息。
testGoingLeftFromRightButtonGoesToCenter 中 ,使用 runOnUiThread 來為mRightButton 請求 focus ,使用 runOnUiThread 的原因是因?yàn)楸緶y試方法不在 UI 線程中運(yùn)行。 getInstrumentation 可以取得 Instrumentation 對象,有了 Instrumentation 對象就可以對 Activity 進(jìn)行大部分的操作,waitForIdleSync() 等待 application 回到 idle 狀態(tài),之後就可以檢測 mRightButton 是否獲得了焦點(diǎn)。