Make Range methods to work with detached node

LayoutTests/fast/dom/Range/range-on-detached-node.html

Index: LayoutTests/fast/dom/Range/range-on-detached-node.html
diff --git a/LayoutTests/fast/dom/Range/range-on-detached-node.html b/LayoutTests/fast/dom/Range/range-on-detached-node.html
new file mode 100644
index 0000000000000000000000000000000000000000..13646114909b8aee18f10b042c68b6e117635b87
--- /dev/null
+++ b/LayoutTests/fast/dom/Range/range-on-detached-node.html
@@ -0,0 +1,34 @@
+<div id="container">
+<p id="description"></p>
+<div id="sample">0123<b>45</b>6789</div>
+</div>
+<div id="console"></div>
+<script src="../../js/resources/js-test-pre.js"></script>
+<script>
+description('Range on detached node should not throw exception.');
+function $(id) { return document.getElementById(id); }
+
+function invalidNodeMessage(methodName)
+{
+    return '"InvalidNodeTypeError: Failed to execute \'' + methodName + '\' on \'Range\': the given Node has no parent."'
+}
+
+var sample = $('sample').cloneNode(true);
+var range = document.createRange();
+
+shouldBe('range.selectNode(sample.firstChild); range.startContainer', 'sample');
+shouldBe('range.setEndBefore(sample.firstChild); range.startContainer', 'sample');
+shouldBe('range.setEndAfter(sample.firstChild); range.startContainer', 'sample');
+shouldBe('range.setStartAfter(sample.firstChild); range.startContainer', 'sample');
+shouldBe('range.setStartBefore(sample.firstChild); range.startContainer', 'sample');
+
+shouldThrow('range.selectNode(sample); range.startContainer', invalidNodeMessage('selectNode'));
+shouldThrow('range.setEndAfter(sample); range.startContainer', invalidNodeMessage('setEndAfter'));
+shouldThrow('range.setEndBefore(sample); range.startContainer', invalidNodeMessage('setEndBefore'));
+shouldThrow('range.setStartAfter(sample); range.startContainer', invalidNodeMessage('setStartAfter'));
+shouldThrow('range.setStartBefore(sample); range.startContainer', invalidNodeMessage('setStartBefore'));
+
+if (window.testRunner)
+    $('container').outerHTML = '';
+</script>
+<script src="../../js/resources/js-test-post.js"></script>