25 lines
864 B
HTML
25 lines
864 B
HTML
<!DOCTYPE html>
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<link rel="help" href="https://www.w3.org/TR/1999/REC-xpath-19991116/#predicates">
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<body>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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function nodesetToSet(result) {
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const set = new Set();
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for (let node = result.iterateNext(); node; node = result.iterateNext()) {
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set.add(node);
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}
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return set;
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}
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test(() => {
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const doc = document.implementation.createHTMLDocument();
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doc.body.innerHTML = '<table></table>' +
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'<table><tr><th><th><th><th></table>' +
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'<table></table>';
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const result = nodesetToSet(doc.evaluate('(//table)[count((//table)[2]/descendant::th)-1]', doc.documentElement));
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assert_equals(result.size, 1);
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assert_true(result.has(doc.body.lastChild));
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}, 'An expression in a predicate should not change the context node');
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</script>
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</body>
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