<!DOCTYPE html>
<meta charset="utf-8">
<title>Cross-document XPath expressions</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
function toArray(result) {
  var a = [];
  while (true) {
    var node = result.iterateNext();
    if (node === null) break;
    a.push(node);
  }
  return a;
}

var html_ns = "http://www.w3.org/1999/xhtml";
var xml_doc = document.implementation.createDocument(html_ns, "html");
var html_doc = document.implementation.createHTMLDocument();

function ns_resolver(x) {
  if (x === "html") {
    return html_ns;
  } else {
    return null;
  }
}

test(function() {
  var xml_doc_expression = xml_doc.createExpression("//html");
  assert_array_equals(toArray(xml_doc_expression.evaluate(xml_doc)), []);
}, "expression from XML document, context node in XML document, no namespace resolver");

test(function() {
  var html_doc_expression = html_doc.createExpression("//html");
  assert_array_equals(toArray(html_doc_expression.evaluate(html_doc)), [html_doc.documentElement]);
}, "expression from HTML document, context node in HTML document, no namespace resolver");

test(function() {
  var xml_doc_expression = xml_doc.createExpression("//html");
  assert_array_equals(toArray(xml_doc_expression.evaluate(html_doc)), [html_doc.documentElement]);
}, "expression from XML document, context node in HTML document, no namespace resolver");

test(function() {
  var html_doc_expression = html_doc.createExpression("//html");
  assert_array_equals(toArray(html_doc_expression.evaluate(xml_doc)), []);
}, "expression from HTML document, context node in XML document, no namespace resolver");

test(function() {
  var xml_doc_expression = xml_doc.createExpression("//html", ns_resolver);
  assert_array_equals(toArray(xml_doc_expression.evaluate(xml_doc)), []);
}, "expression from XML document, context node in XML document, with namespace resolver");

test(function() {
  var html_doc_expression = html_doc.createExpression("//html", ns_resolver);
  assert_array_equals(toArray(html_doc_expression.evaluate(html_doc)), [html_doc.documentElement]);
}, "expression from HTML document, context node in HTML document, with namespace resolver");

test(function() {
  var xml_doc_expression = xml_doc.createExpression("//html", ns_resolver);
  assert_array_equals(toArray(xml_doc_expression.evaluate(html_doc)), [html_doc.documentElement]);
}, "expression from XML document, context node in HTML document, with namespace resolver");

test(function() {
  var html_doc_expression = html_doc.createExpression("//html", ns_resolver);
  assert_array_equals(toArray(html_doc_expression.evaluate(xml_doc)), []);
}, "expression from HTML document, context node in XML document, with namespace resolver");
</script>