<!doctype html>
<meta charset="utf-8">
<title>@layer rule parsing / serialization</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#layering">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<script>
  test_valid_rule("@layer A;");
  test_valid_rule("@layer A, B, C;");
  test_valid_rule("@layer A.A;");
  test_valid_rule("@layer A, B.C.D, C;");

  test_invalid_rule("@layer;");
  test_invalid_rule("@layer A . A;");

  test_valid_rule("@layer {\n}");
  test_valid_rule("@layer A {\n}");
  test_valid_rule("@layer A.B {\n}");
  test_invalid_rule("@layer A . B {\n}");

  test_invalid_rule("@layer A, B, C {\n}");
</script>
