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Philip Jägenstedt 91b9fd936e Bug 1499380 [wpt PR 13543] - Add tests for screenLeft and screenTop, a=testonly
Automatic update from web-platform-testsAdd tests for `screenLeft` and `screenTop`

Matches https://github.com/w3c/csswg-drafts/pull/2669.

Note that `screenX` and `screenY` themselves aren't tested at all:
https://github.com/web-platform-tests/wpt/issues/5471

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Update screenLeftTop.html
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Merge pull request #13543 from web-platform-tests/foolip/screenLeftTop

Add tests for `screenLeft` and `screenTop`
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wpt-commits: 384330eb99484763b94f4a986fa8cacabb579739, 9b13cb18deeccf3e1da44e227c343531deffa1fb, 9419b7f7d685502b8c900dbce2500dfdedb0edec
wpt-pr: 13543
2018-11-07 14:40:16 +00:00

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HTML

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-window-screenleft">
<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-window-screentop">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(() => {
assert_equals(typeof window.screenLeft, "number", "screenLeft type");
assert_equals(window.screenLeft, window.screenX, "alias of screenX");
}, "screenLeft");
test(() => {
assert_equals(typeof window.screenTop, "number", "screenTop type");
assert_equals(window.screenTop, window.screenY, "alias of screenY");
}, "screenTop");
</script>