1 Make sure the embeds / plugins attributes are exposed on non-HTML documents.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS xmlDocument.__proto__ is XMLDocument.prototype
7 PASS xmlDocument.__proto__.__proto__ is Document.prototype
8 PASS xmlDocument.embeds.__proto__ is HTMLCollection.prototype
9 PASS xmlDocument.embeds.length is 0
10 PASS xmlDocument.embeds is xmlDocument.plugins
11 PASS successfullyParsed is true