third_party/WebKit/LayoutTests/external/csswg-test/css-rhythm-1/snap-height-dynamic-001.html - Issue 2707203005: Import csswg-test@ed79f8614481e97d61f17f41b65448c211d27c6f

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Issue 2707203005: Import csswg-test@ed79f8614481e97d61f17f41b65448c211d27c6f (Closed)

Patch Set: Created 3 years, 9 months ago

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1 <!DOCTYPE html>

2 <title>CSS Snap Size: snap-height dynamic change</title>

3 <link rel="author" title="Koji Ishii" href="mailto:kojiishi@gmail.com">

4 <link rel="help" href="https://drafts.csswg.org/css-rhythm-1/#snap-height">

5 <meta name="assert" content="This test asserts changing the snap-height property takes effects.">

6 <meta name="flags" content="dom">

7 <script src="/resources/testharness.js"></script>

8 <script src="/resources/testharnessreport.js"></script>

9 <style>

10 div {

11 font-size: 20px;

12 line-height: 1;

13 }

14 </style>

15 <div id="log"></div>

16 <div id="target">X</div>

17 <div id="next">X</div>

18 <script>

19 var before = next.offsetTop;

20 target.style.snapHeight = "40px";

21 var after = next.offsetTop;

22 forceRelayout(document.documentElement);

23 var afterRelayout = next.offsetTop;

24

25 test(function () {

26 assert_not_equals(after, before, "Height must change when snap-height changes" );

27 assert_equals(after, afterRelayout, "Height must not change after relayout");

28 });

29

30 function forceRelayout(element) {

31 var saved = element.style.display;

32 element.style.display = "none";

33 element.offsetTop;

34 element.style.display = saved;

35 element.offsetTop;

36 }

37 </script>

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