The Tor Browser: mobile/android/base/tests/testAxisLocking.java@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 package org.mozilla.gecko.tests;

     3 import org.mozilla.gecko.Actions;

     4 import org.mozilla.gecko.PaintedSurface;

     6 /**

     7  * Basic test for axis locking behaviour.

     8  * - Load page and verify it draws

     9  * - Drag page upwards 100 pixels at a 5-degree angle off the vertical axis

    10  * - Verify that the 5-degree angle was thrown out and it dragged vertically

    11  * - Drag page upwards at a 45-degree angle

    12  * - Verify that the 45-degree angle was not thrown out and it dragged diagonally

    13  */

    14 public class testAxisLocking extends PixelTest {

    15     public void testAxisLocking() {

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

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

    20         blockForGeckoReady();

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

    23         loadAndVerifyBoxes(url);

    25         // drag page upwards by 100 pixels with a slight angle. verify that

    26         // axis locking prevents any horizontal scrolling

    27         Actions.RepeatedEventExpecter paintExpecter = mActions.expectPaint();

    28         meh.dragSync(20, 150, 10, 50);

    29         PaintedSurface painted = waitForPaint(paintExpecter);

    30         paintExpecter.unregisterListener();

    31         try {

    32             checkScrollWithBoxes(painted, 0, 100);

    33             // since checkScrollWithBoxes only checks 4 points, it may not pick up a

    34             // sub-100 pixel horizontal shift. so we check another point manually to make sure.

    35             int[] color = getBoxColorAt(0, 100);

    36             mAsserter.ispixel(painted.getPixelAt(99, 0), color[0], color[1], color[2], "Pixel at 99, 0 indicates no horizontal scroll");

    38             // now drag at a 45-degree angle to ensure we break the axis lock, and

    39             // verify that we have both horizontal and vertical scrolling

    40             paintExpecter = mActions.expectPaint();

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

    42         } finally {

    43             painted.close();

    44         }

    46         painted = waitForPaint(paintExpecter);

    47         paintExpecter.unregisterListener();

    48         try {

    49             checkScrollWithBoxes(painted, 100, 200);

    50         } finally {

    51             painted.close();

    52         }

    53     }

    54 }

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