<!doctype html>
<title>Node.compareDocumentPosition() tests</title>
<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
<div id=log></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=../common.js></script>
<script>
"use strict";
testNodes.forEach(function(referenceName) {
var reference = eval(referenceName);
testNodes.forEach(function(otherName) {
var other = eval(otherName);
test(function() {
var result = reference.compareDocumentPosition(other);
// "If other and reference are the same object, return zero and
// terminate these steps."
if (other === reference) {
assert_equals(result, 0);
return;
}
// "If other and reference are not in the same tree, return the result of
// adding DOCUMENT_POSITION_DISCONNECTED,
// DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, and either
// DOCUMENT_POSITION_PRECEDING or DOCUMENT_POSITION_FOLLOWING, with the
// constraint that this is to be consistent, together and terminate these
// steps."
if (furthestAncestor(reference) !== furthestAncestor(other)) {
// TODO: Test that it's consistent.
assert_in_array(result, [Node.DOCUMENT_POSITION_DISCONNECTED +
Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC +
Node.DOCUMENT_POSITION_PRECEDING,
Node.DOCUMENT_POSITION_DISCONNECTED +
Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC +
Node.DOCUMENT_POSITION_FOLLOWING]);
return;
}
// "If other is an ancestor of reference, return the result of
// adding DOCUMENT_POSITION_CONTAINS to DOCUMENT_POSITION_PRECEDING
// and terminate these steps."
var ancestor = reference.parentNode;
while (ancestor && ancestor !== other) {
ancestor = ancestor.parentNode;
}
if (ancestor === other) {
assert_equals(result, Node.DOCUMENT_POSITION_CONTAINS +
Node.DOCUMENT_POSITION_PRECEDING);
return;
}
// "If other is a descendant of reference, return the result of adding
// DOCUMENT_POSITION_CONTAINED_BY to DOCUMENT_POSITION_FOLLOWING and
// terminate these steps."
ancestor = other.parentNode;
while (ancestor && ancestor !== reference) {
ancestor = ancestor.parentNode;
}
if (ancestor === reference) {
assert_equals(result, Node.DOCUMENT_POSITION_CONTAINED_BY +
Node.DOCUMENT_POSITION_FOLLOWING);
return;
}
// "If other is preceding reference return DOCUMENT_POSITION_PRECEDING
// and terminate these steps."
var prev = previousNode(reference);
while (prev && prev !== other) {
prev = previousNode(prev);
}
if (prev === other) {
assert_equals(result, Node.DOCUMENT_POSITION_PRECEDING);
return;
}
// "Return DOCUMENT_POSITION_FOLLOWING."
assert_equals(result, Node.DOCUMENT_POSITION_FOLLOWING);
}, referenceName + ".compareDocumentPosition(" + otherName + ")");
});
});
testDiv.parentNode.removeChild(testDiv);
</script>
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