Proper unit testing in Seneca?

seneca-unit-testing.js

// npm install seneca mocha
// npm run mocha .

var
	seneca = require('seneca')(),
	assert = require('assert');

// normally this would be a `module.exports = function`...
var myWorkflow = function() {
	this.add({
		role: 'entity',
		cmd: 'save',
		base: 'sys',
		name: 'case'
	}, function (args, done) {
		args.ent = {
			foo: 'bar'
		};
		this.prior(args, done);
	});
};

describe('some random test', function() {
	before(function(done) {
		seneca.use(myWorkflow);
		seneca.add({
			role: 'entity',
			cmd: 'save',
			base: 'sys',
			name: 'case'
		}, function(args, done) {
			done(null, args);
		});
		seneca.ready(function() {
			done();
		});
	});

	it('should return foo bar', function(done) {
		seneca
			.make$('sys/case')
			.save$(function(err, ent) {
				assert.ok(ent.foo === 'bar');
				done();
			});
	});
		
});