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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
<!DOCTYPE html>
<title>CSS Nesting: CSSNestedDeclarations matching</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>
<style>
.trailing {
--x: FAIL;
& { --x: FAIL; }
--x: PASS;
}
</style>
<div class=trailing></div>
<script>
test(() => {
let e = document.querySelector('.trailing');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Trailing declarations apply after any preceding rules');
</script>
<style>
.trailing_no_leading {
& { --x: FAIL; }
--x: PASS;
}
</style>
<div class=trailing_no_leading></div>
<script>
test(() => {
let e = document.querySelector('.trailing_no_leading');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Trailing declarations apply after any preceding rules (no leading)');
</script>
<style>
.trailing_multiple {
--x: FAIL;
--y: FAIL;
--z: FAIL;
--w: FAIL;
& { --x: FAIL; }
--x: PASS;
--y: PASS;
& { --z: FAIL; }
--z: PASS;
--w: PASS;
}
</style>
<div class=trailing_multiple></div>
<script>
test(() => {
let e = document.querySelector('.trailing_multiple');
let s = getComputedStyle(e);
assert_equals(s.getPropertyValue('--x'), 'PASS');
assert_equals(s.getPropertyValue('--y'), 'PASS');
assert_equals(s.getPropertyValue('--z'), 'PASS');
assert_equals(s.getPropertyValue('--w'), 'PASS');
}, 'Trailing declarations apply after any preceding rules (multiple)');
</script>
<style>
.trailing_specificity {
--x: FAIL;
:is(&, div.nomatch2) { --x: PASS; } /* Specificity: (0, 1, 1) */
--x: FAIL; /* Specificity: (0, 1, 0) */
}
</style>
<div class=trailing_specificity></div>
<script>
test(() => {
let e = document.querySelector('.trailing_specificity');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested declarations rule has same specificity as outer selector');
</script>
<style>
#nomatch, .specificity_top_level {
--x: FAIL;
:is(&, div.nomatch2) { --x: PASS; } /* Specificity: (0, 1, 1) */
--x: FAIL; /* Specificity: (0, 1, 0). In particular, this does not have
specificity like :is(#nomatch, .specificity_top_level). */
}
</style>
<div class=specificity_top_level></div>
<script>
test(() => {
let e = document.querySelector('.specificity_top_level');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested declarations rule has top-level specificity behavior');
</script>
<style>
#nomatch, .specificity_top_level_max, div.specificity_top_level_max {
--x: FAIL;
:is(:where(&), div.nomatch2) { --x: FAIL; } /* Specificity: (0, 1, 1) */
--x: PASS; /* Specificity: (0, 1, 1) (for div.specificity_top_level_max) */
}
</style>
<div class=specificity_top_level_max></div>
<script>
test(() => {
let e = document.querySelector('.specificity_top_level_max');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested declarations rule has top-level specificity behavior (max matching)');
</script>
<style>
.nested_pseudo::after {
--x: FAIL;
@media (width > 0px) {
--x: PASS;
}
}
</style>
<div class=nested_pseudo></div>
<script>
test(() => {
let e = document.querySelector('.nested_pseudo');
assert_equals(getComputedStyle(e, '::after').getPropertyValue('--x'), 'PASS');
}, 'Bare declartaion in nested grouping rule can match pseudo-element');
</script>
<style>
#nomatch, .nested_group_rule {
--x: FAIL;
@media (width > 0px) {
--x: FAIL; /* Specificity: (0, 1, 0) */
}
--x: PASS;
}
</style>
<div class=nested_group_rule></div>
<script>
test(() => {
let e = document.querySelector('.nested_group_rule');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested group rules have top-level specificity behavior');
</script>
<style>
.nested_scope_rule {
div:where(&) { /* Specificity: (0, 0, 1) */
--x: PASS;
}
@scope (&) {
--x: FAIL; /* Specificity: (0, 0, 0) */
}
}
</style>
<div class=nested_scope_rule></div>
<script>
test(() => {
let e = document.querySelector('.nested_scope_rule');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested @scope rules behave like :where(:scope)');
</script>
<style>
.nested_scope_rule_trailing {
div:where(&) { /* Specificity: (0, 0, 1) */
--x: PASS;
}
@scope (&) {
--ignored: 1;
.ignored {}
--x: FAIL; /* Specificity: (0, 0, 0) */
}
}
</style>
<div class=nested_scope_rule_trailing></div>
<script>
test(() => {
let e = document.querySelector('.nested_scope_rule_trailing');
assert_equals(getComputedStyle(e).getPropertyValue('--x'), 'PASS');
}, 'Nested @scope rules behave like :where(:scope) (trailing)');
</script>
<style id=set_parent_selector_text_style>
.set_parent_selector_text {
div {
color: red;
}
.a1 {
.ignored {}
color: green;
}
}
</style>
<div class=set_parent_selector_text>
<div class=a1>A1</div>
<div class=a2>A2</div>
</div>
<script>
test(() => {
let a1 = document.querySelector('.set_parent_selector_text > .a1');
let a2 = document.querySelector('.set_parent_selector_text > .a2');
assert_equals(getComputedStyle(a1).color, 'rgb(0, 128, 0)');
assert_equals(getComputedStyle(a2).color, 'rgb(255, 0, 0)');
let rules = set_parent_selector_text_style.sheet.cssRules;
assert_equals(rules.length, 1);
assert_equals(rules[0].cssRules.length, 2);
let a_rule = rules[0].cssRules[1];
assert_equals(a_rule.selectorText, '& .a1');
a_rule.selectorText = '.a2';
assert_equals(a_rule.selectorText, '& .a2');
assert_equals(getComputedStyle(a1).color, 'rgb(255, 0, 0)');
assert_equals(getComputedStyle(a2).color, 'rgb(0, 128, 0)');
}, 'Nested declarations rule responds to parent selector text change');
</script>
|
