зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1523562 [wpt PR 15060] - An+B Parsing, a=testonly
Automatic update from web-platform-tests An+B Parsing Exercise all the An+B parsing clauses -- Merge pull request #15060 from web-platform-tests/tabatkins-patch-3 An+B Parsing -- wpt-commits: 64471426ded3256f691420ba40df523d9a73ebdd, 129adcb38de49f31df9dfaea8d5d32f032cad2da wpt-pr: 15060
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<!doctype html>
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<title>An+B Parsing</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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foo { color: blue; }
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</style>
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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/#the-anb-type">
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<script>
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function roundtripANB(str) {
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const rule = document.styleSheets[0].cssRules[0];
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rule.selectorText = "foo";
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rule.selectorText = `:nth-child(${str})`;
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// Check for parse error.
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if(rule.selectorText == "foo") return "parse error";
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return rule.selectorText.slice(11, -1);
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}
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function testANB(input, expected) {
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test(()=>{
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assert_equals(roundtripANB(input), expected);
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}, `"${input}" becomes "${expected}"`);
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}
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/* Just going down all the syntax clauses one-by-one */
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// odd | even |
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testANB("odd", "2n+1");
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testANB("even", "2n");
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// <integer> |
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testANB("1", "1");
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testANB("+1", "1");
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testANB("-1", "-1");
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//
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// <n-dimension> |
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testANB("5n", "5n");
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testANB("5N", "5n");
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// '+'?† n |
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testANB("+n", "n");
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testANB("n", "n");
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testANB("N", "n");
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testANB("+ n", "parse error");
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// -n |
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testANB("-n", "-n");
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testANB("-N", "-n");
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//
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// <ndashdigit-dimension> |
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testANB("5n-5", "5n-5");
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// '+'?† <ndashdigit-ident> |
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testANB("+n-5", "n-5");
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testANB("n-5", "n-5");
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testANB("+ n-5", "parse error");
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// <dashndashdigit-ident> |
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testANB("-n-5", "-n-5");
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//
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// <n-dimension> <signed-integer> |
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testANB("5n +5", "5n+5");
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testANB("5n -5", "5n-5");
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// '+'?† n <signed-integer> |
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testANB("+n +5", "n+5");
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testANB("n +5", "n+5");
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testANB("+n -5", "n-5");
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testANB("+ n +5", "parse error");
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testANB("n 5", "parse error");
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// -n <signed-integer> |
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testANB("-n +5", "-n+5");
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testANB("-n -5", "-n-5");
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testANB("-n 5", "parse error");
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//
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// <ndash-dimension> <signless-integer> |
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testANB("5n- 5", "5n-5");
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testANB("5n- -5", "parse error");
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testANB("5n- +5", "parse error");
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testANB("-5n- 5", "-5n-5");
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// '+'?† n- <signless-integer> |
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testANB("+n- 5", "n-5");
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testANB("n- 5", "n-5");
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testANB("+ n- 5", "parse error");
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testANB("n- +5", "parse error");
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testANB("n- -5", "parse error");
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// -n- <signless-integer> |
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testANB("-n- 5", "-n-5");
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testANB("-n- +5", "parse error");
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testANB("-n- -5", "parse error");
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//
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// <n-dimension> ['+' | '-'] <signless-integer>
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testANB("5n + 5", "5n+5");
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testANB("5n - 5", "5n-5");
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testANB("5n + +5", "parse error");
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testANB("5n + -5", "parse error");
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testANB("5n - +5", "parse error");
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testANB("5n - -5", "parse error");
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// '+'?† n ['+' | '-'] <signless-integer> |
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testANB("+n + 5", "n+5");
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testANB("n + 5", "n+5");
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testANB("+ n + 5", "parse error");
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testANB("+n - 5", "n-5");
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testANB("+n + +5", "parse error");
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testANB("+n + -5", "parse error");
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testANB("+n - +5", "parse error");
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testANB("+n - -5", "parse error");
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// -n ['+' | '-'] <signless-integer>
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testANB("-n + 5", "-n+5");
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testANB("-n - 5", "-n-5");
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testANB("-n + +5", "parse error");
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testANB("-n + -5", "parse error");
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testANB("-n - +5", "parse error");
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testANB("-n - -5", "parse error");
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/* Swapped ordering is invalid */
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testANB("1 - n", "parse error");
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testANB("0 - n", "parse error");
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testANB("-1 + n", "parse error");
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/* Odd space usage */
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testANB("2 n + 2", "parse error");
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testANB("- 2n", "parse error");
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testANB("+ 2n", "parse error");
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testANB("+2 n", "parse error");
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</script>
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