client.js

function FancyJSON(runner) {

	var root = null;
	var result = {};

	function recurse(suite, result) {

		result.durationSec = 0;
		result.passed = true;

		if(suite.title)
			result.description = suite.title;

		if(suite.tests.length) {
			result.specs = [];
			for (var i = 0; i < suite.tests.length; i++) {

				result.specs.push({
					"description": suite.tests[i].title,
					"durationSec": (suite.tests[i].duration / 1000) || 0, // duration of spec run in seconds
					"passed": suite.tests[i].state === "passed" // did the spec pass?
					//"passedCount": 1, // passed assertions in spec
					//"failedCount": 0, // failed assertions in spec
					//"totalCount": 1 // total assertions in spec
				});

				result.durationSec += (suite.tests[i].duration / 1000) || 0;

				if(suite.tests[i].state !== "passed")
					result.passed = false;

			}
		}

		if(suite.suites.length) {

			result.suites = [];

			var sub = null;
			for (var j = 0; j < suite.suites.length; j++) {

				sub = {};
				recurse(suite.suites[j], sub);
				result.suites.push(sub);

				result.durationSec += sub.durationSec || 0;

				if(!sub.passed)
					result.passed = false;

			}

		}

	}

	runner.on('suite', function(suite) {
		if(suite.parent.root) root = suite.parent;
	});

	runner.on('end', function() {
		recurse(root, result);
		window.jsonReport = result;
	});

}


function mochaSaucePlease(options, fn) {

	(function(runner) {

		// execute optional callback to give user access to the runner
		if(fn) {
			fn(runner);
		}

		if(!options) {
			options = {};
		}

		// in a PhantomJS environment, things are different
		if(!runner.on) {
			return;
		}

		// Generate JSON coverage
		mocha.reporter(FancyJSON);
		new mocha._reporter(runner);

		// Generate XUnit coverage
		window.xUnitReport = 'off';
		if(options.xunit != false) {
			window.xUnitReport = '';
			(function() {
				var log = window.console && console.log;

				if(!window.console) {
					window.console = {};
				}

				console.log = function() {
					window.xUnitReport += arguments[0] + "\n"; // TODO: handle complex console.log
					if(log) log.apply(console, arguments);
				};
			})();
			mocha.reporter("xunit", {});
			new mocha._reporter(runner);
		}

		// The Grid view needs more info about failures
		var failed = [];
		runner.on('fail', function(test, err) {
			failed.push({
				title: test.title,
				fullTitle: test.fullTitle(),
				error: {
					message: err.message,
					stack: err.stack
				}
			});
		});

		// implement custom reporter for console to read back from Sauce
		runner.on('end', function() {
			runner.stats.failed = failed;
			runner.stats.xUnitReport = xUnitReport;
			runner.stats.jsonReport = jsonReport;
			window.mochaResults = runner.stats;
			window.chocoReady = true;
		});

	})(window.mochaPhantomJS ? mochaPhantomJS.run() : mocha.run());

}