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@@ -0,0 +1,46 @@
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+<!doctype html>
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+<title>Input Preprocessing</title>
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+<script src="../../resources/testharness.js"></script>
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+<script src="../../resources/testharnessreport.js"></script>
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+<style>
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+
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+foo { color: blue; }
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+
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+</style>
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+
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+<meta name="author" title="Tab Atkins-Bittner">
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+<link rel=help href="https://drafts.csswg.org/css-syntax/#input-preprocessing">
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+
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+<script>
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+
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+function roundtripIdent(str) {
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+ const rule = document.styleSheets[0].cssRules[0];
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+ rule.selectorText = "original-ident";
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+ rule.selectorText = str;
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+ // Check for parse error.
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+ if(rule.selectorText == "original-ident") return "parse error";
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+ return rule.selectorText;
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+}
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+function testParsing(input, expected) {
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+ test(()=>{
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+ assert_equals(roundtripIdent(input), expected);
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+ }, `"${input}" becomes "${expected}"`);
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+}
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+
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+/* Can't figure out how to test the newline normalization... */
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+
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+/* NULL becomes FFFD */
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+testParsing("foo\x00", "foo\ufffd");
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+testParsing("f\x00oo", "f\ufffdoo");
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+testParsing("\x00foo", "\ufffdfoo");
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+testParsing("\x00", "\ufffd");
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+testParsing("\x00\x00\x00", "\ufffd\ufffd\ufffd");
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+
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+/* surrogates become FFFD */
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+testParsing("foo\ud800", "foo\ufffd");
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+testParsing("f\ud800oo", "f\ufffdoo");
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+testParsing("\ud800foo", "\ufffdfoo");
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+testParsing("\ud800", "\ufffd");
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+testParsing("\ud800\ud800\ud800", "\ufffd\ufffd\ufffd");
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+
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+</script>
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Gingeh