chai-superagent

superagent integration testing with Chai assertions.

Features

• simplified fork of chai-http
• esm module only, support node >= 14
• integration test request composition
• test http apps or external services
• assertions for common http tasks
• chai expect and should interfaces

Install

$ npm install chai-superagent superagent

Plugin

Use this plugin as you would all other Chai plugins. Notice the function call - it accepts an optional parameter { strict }: { strict?: boolean }. When strict is true, the assertions will assert that the object being tested is an instance of superagent Request, Response or Agent types. It defaults to true.

import { use } from 'chai';
import superagent from 'chai-superagent';

use(superagent());

Integration Testing

Use superagent as you normally would, and test the responses using the assertions provided in this library.

import request from 'superagent';

request
  .get('http://localhost:8000/foo')
  .then(res => expect(res).to.have.status(200));

Assertions

The Chai HTTP module provides a number of assertions for the expect and should interfaces.

.status (code)

• @param {Number} status number

Assert that a response has a supplied status.

expect(res).to.have.status(200);

.header (key[, value])

• @param {String} header key (case insensitive)
• @param {String|RegExp} header value (optional)

Assert that a Response or Request object has a header. If a value is provided, equality to value will be asserted. You may also pass a regular expression to check.

Note: When running in a web browser, the same-origin policy only allows Chai HTTP to read certain headers, which can cause assertions to fail.

expect(req).to.have.header('x-api-key');
expect(req).to.have.header('content-type', 'text/plain');
expect(req).to.have.header('content-type', /^text/);

.headers

Assert that a Response or Request object has headers.

Note: When running in a web browser, the same-origin policy only allows Chai HTTP to read certain headers, which can cause assertions to fail.

expect(req).to.have.headers;

.json / .text / .html

Assert that a Response or Request object has a given content-type.

expect(req).to.be.json;
expect(req).to.be.html;
expect(req).to.be.text;

.charset

Assert that a Response or Request object has a given charset.

expect(req).to.have.charset('utf-8');

.redirect

Assert that a Response object has a redirect status code.

expect(res).to.redirect;
expect(res).to.not.redirect;

.redirectTo

• @param {String|RegExp} location url

Assert that a Response object redirects to the supplied location.

expect(res).to.redirectTo('http://example.com');
expect(res).to.redirectTo(/^\/search\/results\?orderBy=desc$/);

.param

• @param {String} parameter name
• @param {String} parameter value

Assert that a Request object has a query string parameter with a given key, (optionally) equal to value

expect(req).to.have.param('orderby');
expect(req).to.have.param('orderby', 'date');
expect(req).to.not.have.param('limit');

.cookie

• @param {String} parameter name
• @param {String} parameter value

Assert that a Request or Response object has a cookie header with a given key, (optionally) equal to value

expect(req).to.have.cookie('session_id');
expect(req).to.have.cookie('session_id', '1234');
expect(req).to.not.have.cookie('PHPSESSID');
expect(res).to.have.cookie('session_id');
expect(res).to.have.cookie('session_id', '1234');
expect(res).to.not.have.cookie('PHPSESSID');

License

See the LICENSE file for license rights and limitations (MIT).