android - 如何在Android中测试AlertDialog？

我试着用AlertDialog测试一个ActivityInstrumentationTestCase2。
这是原始代码：

    this.setmBtAppelerFixe(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            AlertDialog.Builder dialog = new AlertDialog.Builder(InterventionImmobiliereDetailsActivity.this);
            dialog.setTitle("Appel");
            dialog.setMessage("Appeler le contact ?");
            dialog.setCancelable(true);
            dialog.setNegativeButton("Non", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });
            dialog.setPositiveButton("Oui", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    InterventionImmobiliereDetailsActivity.this.lancerIntentAppel(mIntervention.getTelContact());
                }
            });

            mAdAppelerFixe = dialog.create();
            mAdAppelerFixe.show();
        }
    });

现在我没办法按正键了。此代码似乎不起作用：

    mActivity.runOnUiThread(new Runnable() {
        @Override
        public void run() {
            assertTrue(mLLAppelerFixe.performClick());

            AlertDialog mDialog = mActivity.getAdAppelerFixe();
            assertTrue(mDialog.isShowing());

            Button okButton = mDialog.getButton(AlertDialog.BUTTON_POSITIVE);

            assertTrue(okButton.performClick());
            assertTrue(mActivity.isNumeroValide());
        }
    });

首先，我点击我的布局打开AlertDialog。
然后我得到OK_BUTTON并点击它。它应该将numeroValide布尔值设置为true。
但什么都没有。
如何使用按钮简单地测试AlertDialog？

最佳答案

这在我的Nexus 4设备上运行得很好：

@MediumTest
public void testStartMyActivity() {
    monitor = getInstrumentation().addMonitor(MyActivity.class.getName(), null, false);

    TouchUtils.clickView(this, startMyActivityButton);

    MyActivity myActivity = (MyActivity) monitor.waitForActivityWithTimeout(2000);
    assertNotNull("MyActivity activity not started, activity is null", myActivity);

    AlertDialog dialog = myActivity.getLastDialog(); // I create getLastDialog method in MyActivity class. Its return last created AlertDialog
    if (dialog.isShowing()) {
        try {
            performClick(dialog.getButton(DialogInterface.BUTTON_POSITIVE));
        } catch (Throwable e) {
            e.printStackTrace();
        }
    }

    myActivity.finish();
    getInstrumentation().removeMonitor(monitor);
}

private void performClick(final Button button) throws Throwable {
    runTestOnUiThread(new Runnable() {
        @Override
        public void run() {
            button.performClick();
        }
    });
    getInstrumentation().waitForIdleSync();
}

下面是测试AlertDialog的示例（来自Android Google源代码）：
AlertDialogTest.java