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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-cascade/layer-rule-invalid-name.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>@layer with invalid layer names is dropped</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="layer-numeric">@layer 123 { .a { color: red } }</style>
<style id="layer-dot-numeric">@layer foo.123 { .a { color: red } }</style>
<style id="layer-dash-only">@layer - { .a { color: red } }</style>
<style id="layer-valid">@layer valid-name { .a { color: red } }</style>
<script>
"use strict";
test(() => {
const { sheet } = document.getElementById("layer-numeric");
assert_equals(sheet.cssRules.length, 0);
}, "@layer with numeric name (123) is dropped");
test(() => {
const { sheet } = document.getElementById("layer-dot-numeric");
assert_equals(sheet.cssRules.length, 0);
}, "@layer with numeric segment (foo.123) is dropped");
test(() => {
const { sheet } = document.getElementById("layer-dash-only");
assert_equals(sheet.cssRules.length, 0);
}, "@layer with lone dash (-) name is dropped");
test(() => {
const { sheet } = document.getElementById("layer-valid");
assert_equals(sheet.cssRules.length, 1);
}, "@layer with valid ident name is accepted");
</script>