@LargeTest
  public void testFindAccessibilityNodeInfoByViewId() throws Exception {
    final long startTimeMillis = SystemClock.uptimeMillis();
    try {
      AccessibilityNodeInfo button =
          mUiTestAutomationBridge.findAccessibilityNodeInfoByViewIdInActiveWindow(R.id.button5);
      assertNotNull(button);
      assertEquals(0, button.getChildCount());

      // bounds
      Rect bounds = new Rect();
      button.getBoundsInParent(bounds);
      assertEquals(0, bounds.left);
      assertEquals(0, bounds.top);
      assertEquals(160, bounds.right);
      assertEquals(100, bounds.bottom);

      // char sequence attributes
      assertEquals("com.android.frameworks.coretests", button.getPackageName());
      assertEquals("android.widget.Button", button.getClassName());
      assertEquals("Button5", button.getText());
      assertNull(button.getContentDescription());

      // boolean attributes
      assertTrue(button.isFocusable());
      assertTrue(button.isClickable());
      assertTrue(button.isEnabled());
      assertFalse(button.isFocused());
      assertTrue(button.isClickable());
      assertFalse(button.isPassword());
      assertFalse(button.isSelected());
      assertFalse(button.isCheckable());
      assertFalse(button.isChecked());

      // actions
      assertEquals(ACTION_FOCUS | ACTION_SELECT | ACTION_CLEAR_SELECTION, button.getActions());
    } finally {
      if (DEBUG) {
        final long elapsedTimeMillis = SystemClock.uptimeMillis() - startTimeMillis;
        Log.i(LOG_TAG, "testFindAccessibilityNodeInfoByViewId: " + elapsedTimeMillis + "ms");
      }
    }
  }
  @LargeTest
  public void testAccessibilityEventGetSource() throws Exception {
    final long startTimeMillis = SystemClock.uptimeMillis();
    try {
      // find a view and make sure it is not focused
      final AccessibilityNodeInfo button =
          mUiTestAutomationBridge.findAccessibilityNodeInfoByViewIdInActiveWindow(R.id.button5);
      assertFalse(button.isFocused());

      AccessibilityEvent event =
          mUiTestAutomationBridge.executeCommandAndWaitForAccessibilityEvent(
              new Runnable() {
                @Override
                public void run() {
                  // focus the view
                  assertTrue(button.performAction(ACTION_FOCUS));
                }
              },
              new Predicate<AccessibilityEvent>() {
                @Override
                public boolean apply(AccessibilityEvent event) {
                  return (event.getEventType() == AccessibilityEvent.TYPE_VIEW_FOCUSED
                      && event.getPackageName().equals(getActivity().getPackageName())
                      && event.getText().get(0).equals(button.getText()));
                }
              },
              TIMEOUT_PROPAGATE_ACCESSIBILITY_EVENT_MILLIS);

      // check the last event
      assertNotNull(event);

      // check that last event source
      AccessibilityNodeInfo source = event.getSource();
      assertNotNull(source);

      // bounds
      Rect buttonBounds = new Rect();
      button.getBoundsInParent(buttonBounds);
      Rect sourceBounds = new Rect();
      source.getBoundsInParent(sourceBounds);

      assertEquals(buttonBounds.left, sourceBounds.left);
      assertEquals(buttonBounds.right, sourceBounds.right);
      assertEquals(buttonBounds.top, sourceBounds.top);
      assertEquals(buttonBounds.bottom, sourceBounds.bottom);

      // char sequence attributes
      assertEquals(button.getPackageName(), source.getPackageName());
      assertEquals(button.getClassName(), source.getClassName());
      assertEquals(button.getText(), source.getText());
      assertSame(button.getContentDescription(), source.getContentDescription());

      // boolean attributes
      assertSame(button.isFocusable(), source.isFocusable());
      assertSame(button.isClickable(), source.isClickable());
      assertSame(button.isEnabled(), source.isEnabled());
      assertNotSame(button.isFocused(), source.isFocused());
      assertSame(button.isLongClickable(), source.isLongClickable());
      assertSame(button.isPassword(), source.isPassword());
      assertSame(button.isSelected(), source.isSelected());
      assertSame(button.isCheckable(), source.isCheckable());
      assertSame(button.isChecked(), source.isChecked());
    } finally {
      if (DEBUG) {
        final long elapsedTimeMillis = SystemClock.uptimeMillis() - startTimeMillis;
        Log.i(LOG_TAG, "testAccessibilityEventGetSource: " + elapsedTimeMillis + "ms");
      }
    }
  }
 /**
  * Last package to report accessibility events
  *
  * @return String name of package
  */
 public String getCurrentPackageName() {
   mUiAutomatorBridge.waitForIdle();
   AccessibilityNodeInfo rootNode = getRootNode();
   if (rootNode == null) return null;
   return rootNode.getPackageName() != null ? rootNode.getPackageName().toString() : null;
 }