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Super-agent driven library for testing node.js HTTP servers using a fluent API

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SuperTest

HTTP assertions made easy via super-agent.

About

The motivation with this module is to provide a high-level abstraction for testing HTTP, while still allowing you to drop down to the lower-level API provided by super-agent.

Example

You may pass an http.Server, or a Function to request() - if the server is not already listening for connections then it is bound to an ephemeral port for you so there is no need to keep track of ports.

SuperTest works with any test framework, here is an example without using any test framework at all:

var request = require('supertest')
  , express = require('express');

var app = express();

app.get('/user', function(req, res){
  res.send(201, { name: 'tobi' });
});

request(app)
  .get('/user')
  .expect('Content-Type', /json/)
  .expect('Content-Length', '20')
  .expect(201)
  .end(function(err, res){
    if (err) throw err;
  });

Here's an example with mocha, note how you can pass done straight to any of the .expect() calls:

describe('GET /users', function(){
  it('respond with json', function(done){
    request(app)
      .get('/user')
      .set('Accept', 'application/json')
      .expect('Content-Type', /json/)
      .expect(200, done);
  })
})

If you are using the .end() method .expect() assertions that fail will not throw - they will return the assertion as an error to the .end() callback. In order to fail the test case, you will need to rethrow or pass err to done(), as follows:

describe('GET /users', function(){
  it('respond with json', function(done){
    request(app)
      .get('/user')
      .set('Accept', 'application/json')
      .expect(200)
      .end(function(err, res){
        if (err) return done(err);
        done()
      });
  })
})

Anything you can do with superagent, you can do with supertest - for example multipart file uploads!

request(app)
.post('/')
.attach('avatar', 'test/fixtures/homeboy.jpg')
...

API

You may use any super-agent methods, including .write(), .pipe() etc and perform assertions in the .end() callback for lower-level needs.

.expect(status[, fn])

Assert response status code.

.expect(status, body[, fn])

Assert response status code and body.

.expect(body[, fn])

Assert response body text with a string, regular expression, or parsed body object.

.expect(field, value[, fn])

Assert header field value with a string or regular expression.

.end(fn)

Perform the request and invoke fn(err, res).

Notes

Inspired by api-easy minus vows coupling.

License

MIT

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