The Tor Browser / file revision

 package org.mozilla.gecko.tests;

 import org.mozilla.gecko.Actions;

 import org.mozilla.gecko.PaintedSurface;

 public class test_bug720538 extends PixelTest {

     public void test_bug720538() {

         String url = getAbsoluteUrl("/robocop/test_bug720538.html");

         blockForGeckoReady();

         /*

          * for this test, we load the associated test_bug720538.html file. this file has two

          * iframes (painted completely blue - #0000FF) and the rest of the page is the background

          * color, which is #008000 green. When we first render the page there is an iframe in

          * the top-left corner, and when we double-tap on it it should zoom to fill the visible

          * view area leaving a little bit of space on either side. We can test for this by checking

          * a few pixels to ensure that there is some background visible on either side of the iframe.

          * Finally, when we double-tap on it to zoom out again, we need to check that the bottom of

          * the view doesn't have any checkerboarding. We can verify this by getting a few pixels and

          * checking that it is the same as the expected background color of the page, as opposed to

          * the gray shades of the checkerboard.

          */

         PaintedSurface painted = loadAndGetPainted(url);

         try {

             // first we check that the point we want to double-tap (100, 100) is blue, indicating it's inside the iframe

             mAsserter.ispixel(painted.getPixelAt(100, 100), 0, 0, 0xFF, "Ensuring double-tap point is in the iframe");

         } finally {

             painted.close();

         }

         // do the double tap and wait for the double-tap animation to finish. we assume the animation is done

         // when we find a 500ms period with no paint events that occurs after at least one paint event.

         Actions.RepeatedEventExpecter paintExpecter = mActions.expectPaint();

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

         meh.doubleTap(100, 100);

         painted = waitForPaint(paintExpecter);

         paintExpecter.unregisterListener();

         try {

             // check a few points to ensure that we did a good zoom-to-block on the iframe. this checks that

             // the background color is visible on the left and right edges of the viewport, but the iframe is

             // visible in between those edges

             mAsserter.ispixel(painted.getPixelAt(0, 100), 0, 0x80, 0, "Checking page background to the left of the iframe");

             mAsserter.ispixel(painted.getPixelAt(50, 100), 0, 0, 0xFF, "Checking for iframe a few pixels from the left edge");

             mAsserter.ispixel(painted.getPixelAt(mDriver.getGeckoWidth() - 51, 100), 0, 0, 0xFF, "Checking for iframe a few pixels from the right edge");

             mAsserter.ispixel(painted.getPixelAt(mDriver.getGeckoWidth() - 1, 100), 0, 0x80, 0, "Checking page background the right of the iframe");

         } finally {

             painted.close();

         }

         // now we do double-tap again to zoom out and wait for the animation to finish, as before

         paintExpecter = mActions.expectPaint();

         meh.doubleTap(mDriver.getGeckoWidth() / 2, 100);

         painted = waitForPaint(paintExpecter);

         paintExpecter.unregisterListener();

         try {

             // and now we check a pixel at the bottom of the view to ensure that we have the page

             // background and not some checkerboarding. use the second-last row of pixels instead of

             // the last row because the last row is subject to rounding and clipping errors

             for (int y = 2; y < 10; y++) {

                 for (int x = 0; x < 10; x++) {

                     mAsserter.dumpLog("Pixel at " + x + ", " + (mDriver.getGeckoHeight() - y) + ": " + Integer.toHexString(painted.getPixelAt(x, mDriver.getGeckoHeight() - y)));

                 }

             }

             mAsserter.ispixel(painted.getPixelAt(0, mDriver.getGeckoHeight() - 2), 0, 0x80, 0, "Checking bottom-left corner of viewport");

         } finally {

             painted.close();

         }

     }

 }