Sign Up for Free

RunKit +

Try any Node.js package right in your browser

This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 400,000 packages pre-installed, including test with all npm packages installed. Try it out:

var test = require("test")

This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.

test v0.6.0

(Un)CommonJS test runner.

(Un)commonJS unit test runner

Implementation of (Un)commonJS unit test runner.

build status

Testing

In order to make your package testable from npm you should:

  • Create a directory in your package root.
  • Define test directory in package descriptor under directories section.
  • Define test script in package descriptor under scripts section.
  • Define dependency on this package (It's name is "test" in npm registry).
  • Write your tests
  • Test your package by running all tests npm test or run individual tests node ./path/to/test/group.js

Example

package.json

{
  "name": "mypackage",
  "version": "0.7.0",
  "description": "Sample package",
  "scripts": { "test": "node test/all.js" },
  "devDependencies": { "test": ">=0.0.5" }
}

Async test

// if test function expects second named argument it will be executed
// in async mode and test will be complete only after callback is called
exports['test my async foo'] = function(assert, done) {
  var http = require('http')
  var google = http.createClient(80, 'www.jeditoolkit.com')
  var request = google.request('GET', '/', {'host': 'www.jeditoolkit.com'})
  request.end()
  request.on('response', function (response) {
    assert.equal(response.statusCode, 302, 'must redirect') // will log result
    response.setEncoding('utf8')
    response.on('data', function (chunk) {
      assert.notEqual(chunk, 'helo world', 'must be something more inteligent')
      done() // telling test runner that we're done with this test
    })
  })
}

if (module == require.main) require('test').run(exports)

Sync test

// using assert passed to the test function that just logs failures
exports['test that logs all failures'] = function(assert) {
  assert.equal(2 + 2, 5, 'assert failure is logged')
  assert.equal(3 + 2, 5, 'assert pass is logged')
}

if (module == require.main) require('test').run(exports)

Fast fail

// using nodejs's build in asserts that throw on failure
var assert = require('assert')

exports['test that stops execution on first failure'] = function() {
  assert.equal(2 + 2, 5, 'assert fails and test execution stop here')
  assert.equal(3 + 2, 5, 'will never pass this since test failed above')
}

if (module == require.main) require('test').run(exports)

Custom assertions

var AssertBase = require('assert').Assert
var AssertDescriptor = {
  constructor: { value: Assert },
  inRange: { value: function (lower, inner, upper, message) {
    if (lower < inner && inner < upper) {
      this.fail({
        actual: inner,
        expected: lower + '> ' + ' < ' + upper,
        operator: "inRange",
        message: message
      })
    } else {
      this.pass(message);
    }
  }, enumerable: true }
}
function Assert() {
  return Object.create(AssertBase.apply(null, arguments), AssertDescriptor)
}

// bundling custom asserts with test suite
exports.Assert = Assert
exports['test with custom asserts'] = function(assert) {
  assert.inRange(2, 3, 5, 'passes assert and logs')
  assert.equal(3 + 2, 5, 'assert pass is logged')
}

if (module == require.main) require('test').run(exports)

For more examples checkout tests for this package and for more details see the UncommonJS unit test runner specification.

RunKit is a free, in-browser JavaScript dev environment for prototyping Node.js code, with every npm package installed. Sign up to share your code.
Sign Up for Free