controller.js

function getBoard(req, res) {
	if (!req.params.id) {
		res.status(501).send({error: 'Missing ID'});
		return Promise.resolve();
	}

	return dao.getBoard(req.params.id).then((data) => {
		if (Array.isArray(data)) {
			data = data[0]; //Only the first board
		}

		if (!data) {
			res.status(404);
			return;
		}
		data.Canonical = `/api/board/${data.ID}`;

		res.send(data);
	}).catch((err) => {
		//TODO: logging errors
		res.status(500).send({error: err.toString()});
	});
}

dao.js

function getBoard(id) {
	return db.Boards.findByPrimary(id, {
		where: {
			GameID: null
		}
	}).then((board) => {
		return board;
	});
}

test.js

it('should not return an invalid board', (done) => {
			const req = http.request({
				host: 'localhost',
				port: '8080',
				path: '/api/board/1111',
				method: 'GET'
			});
			req.end();

			req.on('response', (response) => {
				assert.equal(404, response.statusCode, 'Invalid board should not be returned');
				done();
			});
		});