1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
<!DOCTYPE html>
<title>CSS Nesting: CSSNestedDeclarations CSSOM (whitespace)</title>
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/#nested-declarations-rule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// https://drafts.csswg.org/cssom/#serialize-a-css-rule
test(() => {
let s = new CSSStyleSheet();
s.replaceSync(`
.a {
& { }
left: 1px;
& { }
right: 1px;
}
`);
assert_equals(s.cssRules.length, 1);
let a_rule = s.cssRules[0];
assert_equals(a_rule.cssRules.length, 4);
for (let child_rule of a_rule.cssRules) {
child_rule.style = '';
}
assert_equals(a_rule.cssText, '.a {\n & { }\n & { }\n}');
}, 'Empty CSSNestedDeclarations do not affect outer serialization');
// https://drafts.csswg.org/cssom/#serialize-a-css-rule
test(() => {
let s = new CSSStyleSheet();
s.replaceSync(`
.a {
@media (width > 1px) {
& { }
left: 1px;
& { }
right: 1px;
}
}
`);
assert_equals(s.cssRules.length, 1);
let outer = s.cssRules[0];
assert_equals(outer.cssRules.length, 1);
// @media
let media = outer.cssRules[0];
assert_equals(media.cssRules.length, 4);
for (let child_rule of media.cssRules) {
child_rule.style = '';
}
assert_equals(media.cssText, '@media (width > 1px) {\n & { }\n & { }\n}');
}, 'Empty CSSNestedDeclarations do not affect outer serialization (nested grouping rule)');
</script>
|
