1 files changed, 60 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-syntax/inclusive-ranges.html b/testing/web-platform/tests/css/css-syntax/inclusive-ranges.html
new file mode 100644
index 0000000000..ac486bde56
--- /dev/null
+++ b/testing/web-platform/tests/css/css-syntax/inclusive-ranges.html
@@ -0,0 +1,60 @@
+<!doctype html>
+<title>Inclusive Ranges</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+
+foo { z-index: 0; }
+
+</style>
+
+<meta name="author" title="Tab Atkins-Bittner">
+<link rel=help href="https://drafts.csswg.org/css-syntax/#digit">
+<link rel=help href="https://drafts.csswg.org/css-syntax/#non-printable-code-point">
+
+<script>
+
+function roundtripIdent(str) {
+    const rule = document.styleSheets[0].cssRules[0];
+    rule.selectorText = "original-ident";
+    rule.selectorText = str;
+    // Check for parse error.
+    if(rule.selectorText == "original-ident") return "parse error";
+    return rule.selectorText;
+}
+function roundtripInteger(str) {
+    const rule = document.styleSheets[0].cssRules[0];
+    rule.style.zIndex = "12345";
+    rule.style.zIndex = str;
+    // Check for parse error.
+    if(rule.style.zIndex == "12345") return "parse error";
+    return rule.style.zIndex;
+}
+function testInteger(input, expected) {
+    test(()=>{
+        assert_equals(roundtripInteger(input), expected);
+    }, `"${input}" becomes "${expected}"`);
+}
+function testIdent(input, expected) {
+    test(()=>{
+        assert_equals(roundtripIdent(input), expected);
+    }, `"${input}" becomes "${expected}"`);
+}
+
+/* Digits are the inclusive range 0-9 */
+for(var i = 0; i <= 9; i++) {
+    testInteger(i+"", i+"");
+}
+
+/* Non-printables are the inclusive ranges 0-8, b, e-1f, or 7f */
+// 0 never shows up due to preprocessing, so start at 1
+for(var i = 1; i <= 8; i++) {
+    testIdent("foo"+String.fromCodePoint(i), "parse error");
+}
+testIdent("foo"+String.fromCodePoint(0xb), "parse error");
+for(var i = 0xe; i <= 0x1f; i++) {
+    testIdent("foo"+String.fromCodePoint(i), "parse error");
+}
+testIdent("foo" + String.fromCodePoint(0x7f), "parse error");
+
+</script>