Function startApp

api/src/middleware/error-handler.test.ts:53–71

(routeHandler: RequestHandler)

describe('Error handler behaves correctly in express app', () => {
	const startApp = (routeHandler: RequestHandler) =>
		new Promise<number>((resolve, reject) => {
			const app = express();

			const server = http.createServer(app);
			server.on('error', (error) => reject(error));

			app.get('/', (req, res, next) => {
				server.close();
				routeHandler(req, res, next);
			});

			app.use(errorHandlerMod.errorHandler);

			server.listen(() => {
				const { port } = server.address() as AddressInfo;
				resolve(port);
			});
		});

	const error = new (createError('NOT_FOUND', `Rabbit not found`, 404))();