javascript/atoms/test/window_scroll_test.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>window_scroll_test</title>
  <link rel="stylesheet" href="/filez/_main/third_party/js/qunit/qunit.css">
  <script src="/filez/_main/third_party/js/qunit/qunit.js"></script>
  <script src="/filez/_main/third_party/js/qunit/qunit_test_runner.js"></script>
  <script src="test_bootstrap.js" type="text/javascript"></script>
  <script type="text/javascript">
    goog.require('bot.userAgent');
    goog.require('bot.window');
    goog.require('goog.Promise');
    goog.require('goog.math.Coordinate');
  </script>
  <script type="text/javascript">
    function verifyScroll(assert, expectedScroll) {
      var actualScroll = bot.window.getScroll();
      assert.strictEqual(actualScroll.x, expectedScroll.x);
      assert.strictEqual(actualScroll.y, expectedScroll.y);
    }

    QUnit.test('scrolling', function(assert) {
      var done = assert.async();
      // Initial page scroll should be (0, 0).
      var pos = bot.window.getScroll();
      verifyScroll(assert, new goog.math.Coordinate(0, 0));

      pos = new goog.math.Coordinate(25, 50);
      bot.window.setScroll(pos);

      // Yield to ensure all browsers apply the scrolling change.
      // Relying on the implicit tick in a promise resolution is enough.
      goog.Promise.resolve().then(function() {
        // For some reason Android stock browser and webview do not apply
        // the full scroll.
        if (goog.userAgent.product.ANDROID) {
          pos = new goog.math.Coordinate(24, 48);
        }
        verifyScroll(assert, pos);
        done();
      });
    });

    QUnit.test('setScrollUsingGetScroll', function(assert) {
      var pos = bot.window.getScroll();
      bot.window.setScroll(pos);
      verifyScroll(assert, pos);
    });
  </script>
</head>
<body style="width: 8000px; height: 8000px; padding: 0px;margin: 0px;">
  <div id="qunit"></div>
  <div id="qunit-fixture"></div>
  Hello
</body>
</html>