Bug 1270955 - Add mochitests for scrolling while over position:fixed …

…and sticky elements. r=botond MozReview-Commit-ID: curYWJlnOQ
dothq · May 11, 2016 · 6a45683 · 6a45683
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diff --git a/gfx/layers/apz/test/mochitest/helper_scroll_on_position_fixed.html b/gfx/layers/apz/test/mochitest/helper_scroll_on_position_fixed.html
@@ -0,0 +1,76 @@
+<head>
+  <meta name="viewport" content="width=device-width; initial-scale=1.0">
+  <title>Wheel-scrolling over position:fixed and position:sticky elements, in the top-level document as well as iframes</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">
+
+var is = window.opener.is;
+var ok = window.opener.ok;
+
+// Scroll the mouse wheel at (dx, dy) relative to |element|.
+function scrollWheelOver(element, dx, dy) {
+  // Move the mouse to the desired wheel location.
+  // Not doing so can result in the wheel events from two consecutive
+  // scrollWheelOver() calls on different elements being incorrectly considered
+  // as part of the same wheel transaction.
+  // We also wait for the mouse move event to be processed before sending the
+  // wheel event, otherwise there is a chance they might get reordered, and
+  // we have the transaction problem again.
+  return synthesizeNativeMouseMoveAndWaitForMoveEvent(element, dx, dy, function() {
+    synthesizeNativeWheelAndWaitForScrollEvent(element, dx, dy, 0, -10, driveTest);
+  });
+}
+
+function* runTest() {
+  var iframeWin = document.getElementById('iframe').contentWindow;
+
+  // scroll over the middle of the iframe's position:sticky element, check
+  // that it scrolls the iframe
+  var scrollPos = iframeWin.scrollY;
+  yield scrollWheelOver(iframeWin.document.body, 50, 150);
+  ok(iframeWin.scrollY > scrollPos, "iframe scrolled after wheeling over the position:sticky element");
+
+  // same, but using the iframe's position:fixed element
+  scrollPos = iframeWin.scrollY;
+  yield scrollWheelOver(iframeWin.document.body, 250, 150);
+  ok(iframeWin.scrollY > scrollPos, "iframe scrolled after wheeling over the position:fixed element");
+
+  // same, but using the top-level window's position:sticky element
+  scrollPos = window.scrollY;
+  yield scrollWheelOver(document.body, 50, 150);
+  ok(window.scrollY > scrollPos, "top-level document scrolled after wheeling over the position:sticky element");
+
+  // same, but using the top-level window's position:fixed element
+  scrollPos = window.scrollY;
+  yield scrollWheelOver(document.body, 250, 150);
+  ok(window.scrollY > scrollPos, "top-level document scrolled after wheeling over the position:fixed element");
+}
+
+var gTestContinuation = null;
+function driveTest() {
+  if (!gTestContinuation) {
+    gTestContinuation = runTest();
+  }
+  var ret = gTestContinuation.next();
+  if (ret.done) {
+    window.opener.testDone();
+  } else {
+    is(ret.value, true, "Test continuation chunk was successful");
+  }
+}
+
+window.onload = function() {
+  waitForAllPaints(function() {
+    flushApzRepaints(driveTest);
+  });
+}
+  </script>
+</head>
+<body style="height:5000px; margin:0">
+  <div style="position:sticky; width: 100px; height: 300px; top: 0; background-color:red">sticky</div>
+  <div style="position:fixed; width: 100px; height: 300px; top: 0; left: 200px; background-color: green">fixed</div>
+  <iframe id='iframe' width="300" height="400" src="data:text/html,<body style='height:5000px; margin:0'><div style='position:sticky; width:100px; height:300px; top: 0; background-color:red'>sticky</div><div style='position:fixed; right:0; top: 0; width:100px; height:300px; background-color:green'>fixed</div>"></iframe>
+</body>
+</head>
diff --git a/gfx/layers/apz/test/mochitest/mochitest.ini b/gfx/layers/apz/test/mochitest/mochitest.ini
@@ -13,6 +13,7 @@ support-files =
   helper_scrollto_tap.html
   helper_tap.html
   helper_long_tap.html
+  helper_scroll_on_position_fixed.html
 tags = apz
 [test_bug982141.html]
 [test_bug1151663.html]
@@ -39,3 +40,5 @@ skip-if = (os == 'android') || (os == 'b2g') || (buildapp == 'mulet') # wheel ev
 # Windows touch injection doesn't work in automation, but this test can be run locally on a windows touch device.
 # On OS X we don't support touch events at all.
 skip-if = (toolkit == 'windows') || (toolkit == 'cocoa')
+[test_scroll_window.html]
+skip-if = (toolkit == 'android') # wheel events not supported on mobile
diff --git a/gfx/layers/apz/test/mochitest/test_scroll_window.html b/gfx/layers/apz/test/mochitest/test_scroll_window.html
@@ -0,0 +1,76 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Various scrolling tests that spawn in a new window</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+// this page just serially loads each one of the following test helper pages in
+// a new window and waits for it to call testDone()
+var tests = [
+  {'file': 'helper_scroll_on_position_fixed.html', 'prefs': [
+        // turn off smooth scrolling so that we don't have to wait for
+        // APZ animations to finish before sampling the scroll offset
+        ['general.smoothScroll', false],
+        // ensure that any mouse movement will trigger a new wheel transaction,
+        // because in this test we move the mouse a bunch and want to recalculate
+        // the target APZC after each such movement.
+        ['mousewheel.transaction.ignoremovedelay', 0],
+        ['mousewheel.transaction.timeout', 0]]}
+];
+
+var testIndex = -1;
+var w = null;
+
+function testDone() {
+  var test = tests[testIndex];
+  if (w) {
+    if (!!test.prefs) {
+      // We pushed some prefs for this test, pop them, and re-invoke
+      // testDone() after that's been processed
+      SpecialPowers.popPrefEnv(function() {
+        w.close();
+        w = null;
+        testDone();
+      });
+      return;
+    }
+
+    w.close();
+  }
+
+  testIndex++;
+  if (testIndex >= tests.length) {
+    SimpleTest.finish();
+    return;
+  }
+
+  test = tests[testIndex];
+  if (!!test.prefs) {
+    // Got some prefs for this subtest, push them
+    SpecialPowers.pushPrefEnv({"set": test.prefs}, function() {
+      w = window.open(test.file, "_blank");
+    });
+  } else {
+    w = window.open(test.file, "_blank");
+  }
+}
+
+window.onload = function() {
+  if (!SpecialPowers.getDOMWindowUtils(window).asyncPanZoomEnabled) {
+    ok(true, "APZ is not enabled, this test is not relevant, sorry!\n");
+    SimpleTest.finish();
+    return;
+  }
+  testDone();
+};
+
+  </script>
+</head>
+<body>
+</body>
+</html>