express-test-server

A minimal but customizable Express server for testing

Typescript based preconfigured Express application intended for quick testing requests and responses, it can can be customized to listen for HTTP and HTTPS traffic and alter the default body parser behavior.

The following Content-Type headers will be parsed and exposed via req.body:

• JSON (application/json)
• Text (text/plain)
• URL-Encoded (application/x-www-form-urlencoded)
• Buffer (application/octet-stream)

Installation

npm install --save-dev @b4dnewz/express-test-server

Getting started

import createServer from "@b4dnewz/express-test-server"

const server = await createServer({
  // server options
});

// Express route handler
server.get('/foo', (req, res) => {
  res.send('bar');
});

// Express alternative route handlers
server.get('/bar', () => 'foo');
server.get('/baz', 'foo');

Perfect for testing

import createServer from "@b4dnewz/express-test-server"

let server;

beforeAll(async () => {
  server = await createServer();
});

afterAll(async () => {
  await server.close();
});

it("respond to get requests", async () => {
  sever.get("/foo", "bar")
  const {body} = await got(`${server.url}/foo`)
  expect(body).toEqual("bar")
})

Options

port (default 0)
Specify a custom port for the HTTP server instance, otherwise it will automatically choose a random free TCP port

await createServer({
  port: 8888
})

sslPort (default 443)
Specify a custom port for the HTTPS server instance, otherwise it will try to default ssl port

await createServer({
  sslPort: 4443
})

hostname (default localhost)
Specify a custom hostname for both HTTP and HTTPS servers, remember that you need a resolvable DNS host name for this to work.

await createServer({
  hostname: "0.0.0.0"
})

await createServer({
  hostname: "test.example.com"
})

listen (default true)
If false will prevent the test server to automatically start to listen for requests when instanciated.

const server = await createServer({
  listen: false
})

// listen later on a desired port
await server.listen({
  port: 8888
})

License

MIT