Sync Document.createProcessingInstruction() with spec

LayoutTests/fast/dom/Node/script-tests/initial-values.js

 description("Test creation of each type of Node and check intial values")
 
 var xmlDoc = document.implementation.createDocument("http://www.w3.org/1999/xhtml", "html", null);
 
 debug("Attribute creation using createElement on an HTML doc:")
 var attr = document.createAttribute("foo");
 shouldBe("attr.nodeName", "'foo'");
 shouldBe("attr.name", "'foo'");
 // Spec: http://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createAttribute
 // Both FF and WebKit return "foo" for Attribute.localName, even though the spec says null
@@ skipping 138 matching lines @@
 
 debug("Element creation using createElementNS on an XHTML doc:")
 element = xmlDoc.createElementNS("http://www.w3.org/1999/xhtml", "html:pre");
 shouldBe("element.nodeName", "'html:pre'");
 shouldBe("element.localName", "'pre'");
 shouldBe("element.namespaceURI", "'http://www.w3.org/1999/xhtml'");
 shouldBe("element.prefix", "'html'");
 shouldBe("element.nodeValue", "null");
 shouldBe("element.attributes.toString()", "'[object NamedNodeMap]'");
 
-// Not possible to create Notation nodes via the DOM, WebKit doesn't create them from parsing
-
-shouldThrow("document.createProcessingInstruction('xml-stylesheet', 'type=\"text/xsl\" href=\"missing.xsl\"')");

[jochen (gone - plz use gerrit), 2013/12/05 11:12:09]

so the following few lines should also pass if you use
document.createProcessingInstruction, right? Can you test that?

[philipj_slow, 2013/12/05 11:57:26]

Done.

 var processingInstruction = xmlDoc.createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="missing.xsl"');
 shouldBe("processingInstruction.nodeName", "'xml-stylesheet'");
 shouldBe("processingInstruction.localName", "null");
 shouldBe("processingInstruction.namespaceURI", "null");
 shouldBe("processingInstruction.prefix", "null");
 // DOM Core Level 2 and DOM Core Level 3 disagree on ProcessingInstruction.nodeValue
 // L2: entire content excluding the target
 // L3: same as ProcessingInstruction.data
 // We're following Level 3
 shouldBe("processingInstruction.nodeValue", "'type=\"text/xsl\" href=\"missing.xsl\"'");
 shouldBe("processingInstruction.target", "'xml-stylesheet'");
 shouldBe("processingInstruction.data", "'type=\"text/xsl\" href=\"missing.xsl\"'");
 
 var text = document.createTextNode("foo");
 shouldBe("text.nodeName", "'#text'");
 shouldBe("text.localName", "null");
 shouldBe("text.namespaceURI", "null");
 shouldBe("text.prefix", "null");
 shouldBe("text.nodeValue", "'foo'");
 shouldBe("text.data", "'foo'");