Port tests to the busted test runner

spec/util_xml_spec.lua

@@ -0,0 +1,20 @@
+
+local xml = require "util.xml";
+
+describe("util.xml", function()
+	describe("#parse()", function()
+		it("should work", function()
+			local x =
+[[<x xmlns:a="b">
+	<y xmlns:a="c"> <!-- this overwrites 'a' -->
+	    <a:z/>
+	</y>
+	<a:z/> <!-- prefix 'a' is nil here, but should be 'b' -->
+</x>
+]]
+			local stanza = xml.parse(x);
+			assert.are.equal(stanza.tags[2].attr.xmlns, "b");
+			assert.are.equal(stanza.tags[2].namespaces["a"], "b");
+		end);
+	end);
+end);