JUnit XML output for JSpec

jspec.junit.js

/*
Output:
<?xml version="1.0" encoding="UTF-8"?>
<testsuites>
  <testsuite name="core.events" tests="2" assertions="2" failures="0" specs="2">
    <testcase name="should be an instance of QueuedEventPool" assertions="1"/>
    <testcase name="should have the correct name" assertions="1"/>
  </testsuite>
  ...
</testsuites>
*/

(function(){
	JSpec.include({
		name: 'JUnit',
		formatters: {
			JUnitXml: function(results, options) {
				var w = new java.io.FileWriter('jspec.xml');
				w.write('<?xml version="1.0" encoding="UTF-8"?>\n');
				w.write('<testsuites>\n');
				JSpec.each(results.allSuites, function(suite) {
					var attribs = {
						name: suite.description,
						tests: suite.specs.length,
						assertions: 0,
						failures: 0,
						specs: 0};
					var content = JSpec.inject(suite.specs, '', function(content, spec) {
						attribs.assertions += spec.assertions.length;
						attribs.failures += spec.passed() ? 0 : 1;
						attribs.specs += 1;
						return content +'    <testcase name="'+spec.description+'" assertions="'+spec.assertions.length+'"/>\n';
					});
					w.write('  <testsuite');
					for (var key in attribs) {
						w.write(' ' + key + '="' + attribs[key] + '"');
					}
					w.write('>\n');
					w.write(content);
					w.write('  </testsuite>\n');
				});
				w.write('</testsuites>\n'); 
				w.close();
				quit(results.stats.failures);
			}
		}
	});
})();

...
function runSuites() {
	JSpec
	.exec('spec.js')
	.run({ formatter : JSpec.formatters.JUnitXML })
	.report();
}
...