Commit 885a3e0d authored by Kartikaya Gupta's avatar Kartikaya Gupta
Browse files

Bug 1525570 - Add a test for preventDefault on pinch zooms. r=botond 

Differential Revision: https://phabricator.services.mozilla.com/D21421

--HG--
extra : moz-landing-system : lando
parent 9e38acbf

gfx/layers/apz/test/mochitest/helper_zoom_prevented.html

0 → 100644
+73 −0
Original line number Diff line number Diff line 
<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <meta name="viewport" content="width=device-width">

  <title>Checking prevent-default for zooming</title>

  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>

  <script type="application/javascript" src="apz_test_utils.js"></script>

  <script type="application/javascript" src="/tests/SimpleTest/paint_listener.js"></script>

  <script type="application/javascript">



function* testPreventDefault(testDriver, aTouchStartToCancel) {

  var initial_resolution = getResolution();

  ok(initial_resolution > 0,

      "The initial_resolution is " + initial_resolution + ", which is some sane value");



  // preventDefault exactly one touchstart based on the value of aTouchStartToCancel

  var touchStartCount = 0;

  var canceller = function(e) {

    dump("touchstart listener hit, count: " + touchStartCount + "\n");

    touchStartCount++;

    if (touchStartCount == aTouchStartToCancel) {

      dump("calling preventDefault on touchstart\n");

      e.preventDefault();

      document.documentElement.removeEventListener("touchstart", canceller, {passive: false});

    }

  };

  document.documentElement.addEventListener("touchstart", canceller, {passive: false});



  // Ensure that APZ gets updated hit-test info

  yield waitForAllPaints(testDriver);



  var zoom_in = [

      [ { x: 125, y: 250 }, { x: 175, y: 350 } ],

      [ { x: 120, y: 220 }, { x: 180, y: 380 } ],

      [ { x: 115, y: 190 }, { x: 185, y: 410 } ],

      [ { x: 110, y: 160 }, { x: 190, y: 440 } ],

      [ { x: 105, y: 130 }, { x: 195, y: 470 } ],

      [ { x: 100, y: 100 }, { x: 200, y: 500 } ],

  ];



  var touchIds = [0, 1];

  yield* synthesizeNativeTouchSequences(document.body, zoom_in, null, touchIds);



  // Flush state and get the resolution we're at now

  yield waitForApzFlushedRepaints(testDriver);

  let final_resolution = getResolution();

  is(final_resolution, initial_resolution, "The final resolution (" + final_resolution + ") matches the initial resolution");

}



function* test(testDriver) {

  // Register a listener that fails the test if the APZ:TransformEnd event fires,

  // because this test shouldn't actually be triggering any transforms

  SpecialPowers.Services.obs.addObserver(function() {

    ok(false, "The test fired an unexpected APZ:TransformEnd");

  }, "APZ:TransformEnd");



  yield* testPreventDefault(testDriver, 1);

  yield* testPreventDefault(testDriver, 2);

}



waitUntilApzStable()

.then(runContinuation(test))

.then(subtestDone);



  </script>

</head>

<body>

  Here is some text to stare at as the test runs. It serves no functional

  purpose, but gives you an idea of the zoom level. It's harder to tell what

  the zoom level is when the page is just solid white.

</body>

</html>

gfx/layers/apz/test/mochitest/test_group_zoom.html

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,9 @@ var prefs = [ 
  // Pinch-zooming currently requires meta viewport support (this requirement

  // will eventually be removed).

  ["dom.meta-viewport.enabled", true],

  // Increase the content response timeout because some tests do preventDefault

  // and we want to make sure APZ actually waits for them.

  ["apz.content_response_timeout", 60000],

];



// Increase the tap timeouts so the double-tap is still detected in case of
@@ -45,6 +48,7 @@ var doubletap_prefs = [ 
var subtests = [

  {"file": "helper_bug1280013.html", "prefs": prefs},

  {"file": "helper_basic_zoom.html", "prefs": prefs},

  {"file": "helper_zoom_prevented.html", "prefs": prefs},

  {"file": "helper_zoomed_pan.html", "prefs": prefs},

  {"file": "helper_fixed_position_scroll_hittest.html", "prefs": prefs},

  {"file": "helper_basic_doubletap_zoom.html", "prefs": doubletap_prefs},