1 files changed, 103 insertions, 0 deletions
diff --git a/dom/xslt/tests/buster/DiffDOM.js b/dom/xslt/tests/buster/DiffDOM.js
new file mode 100644
index 000000000..587214ff3
--- /dev/null
+++ b/dom/xslt/tests/buster/DiffDOM.js
@@ -0,0 +1,103 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// ----------------------
+// DiffDOM(node1,node2)
+// ----------------------
+
+var isHTML = false;
+
+function DiffDOM(node1, node2, aIsHTML)
+{
+  isHTML = aIsHTML;
+  return DiffNodeAndChildren(node1, node2);
+}
+
+
+// namespace attributes in the second node are ignored
+const nsreg = /^xmlns[|:\w]/;
+
+// This function does the work of DiffDOM by recursively calling
+// itself to explore the tree
+function DiffNodeAndChildren(node1, node2)
+{
+  if (!node1 && !node2)
+    return true;
+  if (!node1 || !node2)
+    return ErrorUp("One of the nodes is null", node1, node2);
+  if (node1.type!=node2.type)
+    return ErrorUp("Different node types", node1, node2);
+
+  var attributes = node2.attributes;
+  if (attributes && attributes.length) {
+    var item, name, ns, value, otherValue;
+    for (var index = 0; index < attributes.length; index++) {
+      item = attributes.item(index);
+      ns = item.namespaceURI;
+      if (ns) {
+        name = item.localName;
+        otherValue = node2.getAttributeNS(ns, name);
+      }
+      else {
+        name = item.nodeName;
+        otherValue = node2.getAttribute(name);
+      }
+      value = item.nodeValue;
+      if (!nsreg.test(name) && otherValue!=value) {
+        return ErrorUp("Different values for attribute", node1, node2);
+      }
+    }
+  }
+  else if (node1.attributes && node1.attributes.length) {
+    return ErrorUp("Different number of attributes", node1, node2);
+  }
+
+  if (isHTML) {
+    if (node1.nodeName.toLowerCase()!=node2.nodeName.toLowerCase())
+      return ErrorUp("Different node names", node1, node2);
+  }
+  else {
+    if (node1.nodeName!=node2.nodeName)
+      return ErrorUp("Different node names", node1, node2);
+  }
+  if (node1.nodeValue!=node2.nodeValue)
+    return ErrorUp("Different node values", node1, node2);
+  if (!isHTML)
+    if (node1.namespaceURI!=node2.namespaceURI)
+      return ErrorUp("Different namespace", node1, node2);
+  if (node1.hasChildNodes() != node2.hasChildNodes())
+    return ErrorUp("Different children", node1, node2);
+  if (node1.childNodes) {
+    if (node1.childNodes.length != node2.childNodes.length)
+      return ErrorUp("Different number of children", node1, node2);
+    for (var child = 0; child < node1.childNodes.length; child++) {
+      if (!DiffNodeAndChildren(node1.childNodes[child],
+                               node2.childNodes[child])) {
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+function ErrorUp(errMsg, node1, node2)
+{
+  dump("Error: "+errMsg+"\n");
+  if (node1) {
+      dump("Node 1: "+node1+", ");
+      if (node1.nodeType == Node.TEXT_NODE)
+          dump("nodeValue: "+node1.nodeValue+"\n");
+      else
+          dump("nodeName: "+node1.namespaceURI+":"+node1.nodeName+"\n");
+  }
+  if (node2) {
+      dump("Node 2: "+node2+", ");
+      if (node2.nodeType == Node.TEXT_NODE)
+          dump("nodeValue: "+node2.nodeValue+"\n");
+      else
+          dump("nodeName: "+node2.namespaceURI+":"+node2.nodeName+"\n");
+  }
+  return false;
+}