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<!doctype html>
<title>VTTRegion.scroll</title>
<link rel="help" href="https://w3c.github.io/webvtt/#dom-vttregion-scroll">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
test(function() {
var region = new VTTRegion();
assert_true('scroll' in region, 'scroll is not supported');
region.scroll = '';
assert_equals(region.scroll, '');
region.scroll = 'up';
assert_equals(region.scroll, 'up');
region.scroll = 'down';
assert_equals(region.scroll, 'up');
region.scroll = '';
for (var invalid in ['left', 'right', 'center', 'top', 'bottom', 'down']) {
region.scroll = invalid;
assert_equals(region.scroll, '');
}
}, document.title + ' script-created region');
</script>
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