Project

rack-test

13.5
No release in over a year
Rack::Test is a small, simple testing API for Rack apps. It can be used on its own or as a reusable starting point for Web frameworks and testing libraries to build on.
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
 Dependencies

Development

Runtime

>= 1.3
 Project Readme

Rack::Test

Gem Version

Code: https://github.com/rack/rack-test

Description

Rack::Test is a small, simple testing API for Rack apps. It can be used on its own or as a reusable starting point for Web frameworks and testing libraries to build on.

Features

  • Allows for submitting requests and testing responses
  • Maintains a cookie jar across requests
  • Supports request headers used for subsequent requests
  • Follow redirects when requested

Examples

These examples use test/unit but it's equally possible to use rack-test with other testing frameworks such as minitest or rspec.

require "test/unit"
require "rack/test"
require "json"

class HomepageTest < Test::Unit::TestCase
  include Rack::Test::Methods

  def app
    lambda { |env| [200, {'content-type' => 'text/plain'}, ['All responses are OK']] }
  end

  def test_response_is_ok
    # Optionally set headers used for all requests in this spec:
    #header 'accept-charset', 'utf-8'

    # First argument is treated as the path
    get '/'

    assert last_response.ok?
    assert_equal 'All responses are OK', last_response.body
  end

  def delete_with_url_params_and_body
    # First argument can have a query string
    #
    # Second argument is used as the parameters for the request, which will be
    # included in the request body for non-GET requests.
    delete '/?foo=bar', JSON.generate('baz' => 'zot')
  end

  def post_with_json
    # Third argument is the rack environment to use for the request.  The following
    # entries in the submitted rack environment are treated specially (in addition
    # to options supported by `Rack::MockRequest#env_for`:
    #
    # :cookie : Set a cookie for the current session before submitting the request.
    #
    # :query_params : Set parameters for the query string (as opposed to the body).
    #                 Value should be a hash of parameters.
    #
    # :xhr : Set HTTP_X_REQUESTED_WITH env key to XMLHttpRequest.
    post(uri, JSON.generate('baz' => 'zot'), 'CONTENT_TYPE' => 'application/json')
  end
end

rack-test will test the app returned by the app method. If you are loading middleware in a config.ru file, and want to test that, you should load the Rack app created from the config.ru file:

OUTER_APP = Rack::Builder.parse_file("config.ru").first

class TestApp < Test::Unit::TestCase
  include Rack::Test::Methods

  def app
    OUTER_APP
  end

  def test_root
    get "/"
    assert last_response.ok?
  end
end

Install

To install the latest release as a gem:

gem install rack-test

Or add to your Gemfile:

gem 'rack-test'

Contribution

Contributions are welcome. Please make sure to:

  • Use a regular forking workflow
  • Write tests for the new or changed behaviour
  • Provide an explanation/motivation in your commit message / PR message
  • Ensure History.md is updated

Authors

  • Contributions from Bryan Helmkamp, Jeremy Evans, Simon Rozet, and others
  • Much of the original code was extracted from Merb 1.0's request helper

License

rack-test is released under the MIT License.

Supported platforms

  • Ruby 2.0+
  • JRuby 9.1+

Releasing

  • Bump VERSION in lib/rack/test/version.rb
  • Ensure History.md is up-to-date, including correct version and date
  • git commit . -m 'Release $VERSION'
  • git push
  • git tag -a -m 'Tag the $VERSION release' $VERSION
  • git push --tags
  • gem build rack-test.gemspec
  • gem push rack-test-$VERSION.gem
  • Add a discussion post for the release