The Tor Browser / file revision

 package org.mozilla.gecko.tests;

 import org.mozilla.gecko.Actions;

 import org.mozilla.gecko.PaintedSurface;

 /**

  * Basic test to check bounce-back from overscroll.

  * - Load the page and verify it draws

  * - Drag page downwards by 100 pixels into overscroll, verify it snaps back.

  * - Drag page rightwards by 100 pixels into overscroll, verify it snaps back.

  */

 public class testOverscroll extends PixelTest {

     public void testOverscroll() {

         String url = getAbsoluteUrl("/robocop/robocop_boxes.html");

         MotionEventHelper meh = new MotionEventHelper(getInstrumentation(), mDriver.getGeckoLeft(), mDriver.getGeckoTop());

         blockForGeckoReady();

         // load page and check we're at 0,0

         loadAndVerifyBoxes(url);

         // drag page downwards by 100 pixels so that it goes into overscroll.

         // wait for it to bounce back and check we're at the right spot.

         // the screen size is small). Note that since we only go into overscroll

         // and back this should NOT trigger a gecko-paint

         Actions.RepeatedEventExpecter paintExpecter = mActions.expectPaint();

         meh.dragSync(10, 50, 10, 150);

         PaintedSurface painted = waitWithNoPaint(paintExpecter);

         paintExpecter.unregisterListener();

         try {

             checkScrollWithBoxes(painted, 0, 0);

         } finally {

             painted.close();

         }

         // drag page rightwards to go into overscroll on the left. let it bounce and verify.

         paintExpecter = mActions.expectPaint();

         meh.dragSync(50, 10, 150, 10);

         painted = waitWithNoPaint(paintExpecter);

         paintExpecter.unregisterListener();

         try {

             checkScrollWithBoxes(painted, 0, 0);

         } finally {

             painted.close();

         }

     }

 }