Rack::MockRequest helps testing your Rack application without actually using HTTP.

After performing a request on a URL with get/post/put/patch/delete, it returns a MockResponse with useful helper methods for effective testing.

You can pass a hash with additional configuration to the get/post/put/patch/delete.

:input

A String or IO-like to be used as rack.input.

:fatal

Raise a FatalWarning if the app writes to rack.errors.

:lint

If true, wrap the application in a Rack::Lint.

Namespace
Methods
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Constants
DEFAULT_ENV = { RACK_VERSION => Rack::VERSION, RACK_INPUT => StringIO.new, RACK_ERRORS => StringIO.new, RACK_MULTITHREAD => true, RACK_MULTIPROCESS => true, RACK_RUNONCE => false, }.freeze
 
Class Public methods
env_for(uri="", opts={})

Return the Rack environment used for a request to uri.

# File lib/rack/mock.rb, line 88
def self.env_for(uri="", opts={})
  uri = parse_uri_rfc2396(uri)
  uri.path = "/#{uri.path}" unless uri.path[0] == ?/

  env = DEFAULT_ENV.dup

  env[REQUEST_METHOD]  = (opts[:method] ? opts[:method].to_s.upcase : GET).b
  env[SERVER_NAME]     = (uri.host || "example.org").b
  env[SERVER_PORT]     = (uri.port ? uri.port.to_s : "80").b
  env[QUERY_STRING]    = (uri.query.to_s).b
  env[PATH_INFO]       = ((!uri.path || uri.path.empty?) ? "/" : uri.path).b
  env[RACK_URL_SCHEME] = (uri.scheme || "http").b
  env[HTTPS]           = (env[RACK_URL_SCHEME] == "https" ? "on" : "off").b

  env[SCRIPT_NAME] = opts[:script_name] || ""

  if opts[:fatal]
    env[RACK_ERRORS] = FatalWarner.new
  else
    env[RACK_ERRORS] = StringIO.new
  end

  if params = opts[:params]
    if env[REQUEST_METHOD] == GET
      params = Utils.parse_nested_query(params) if params.is_a?(String)
      params.update(Utils.parse_nested_query(env[QUERY_STRING]))
      env[QUERY_STRING] = Utils.build_nested_query(params)
    elsif !opts.has_key?(:input)
      opts["CONTENT_TYPE"] = "application/x-www-form-urlencoded"
      if params.is_a?(Hash)
        if data = Rack::Multipart.build_multipart(params)
          opts[:input] = data
          opts["CONTENT_LENGTH"] ||= data.length.to_s
          opts["CONTENT_TYPE"] = "multipart/form-data; boundary=#{Rack::Multipart::MULTIPART_BOUNDARY}"
        else
          opts[:input] = Utils.build_nested_query(params)
        end
      else
        opts[:input] = params
      end
    end
  end

  empty_str = String.new.force_encoding(Encoding::ASCII_8BIT)
  opts[:input] ||= empty_str
  if String === opts[:input]
    rack_input = StringIO.new(opts[:input])
  else
    rack_input = opts[:input]
  end

  rack_input.set_encoding(Encoding::BINARY)
  env[RACK_INPUT] = rack_input

  env["CONTENT_LENGTH"] ||= env[RACK_INPUT].length.to_s

  opts.each { |field, value|
    env[field] = value  if String === field
  }

  env
end
new(app)
# File lib/rack/mock.rb, line 52
def initialize(app)
  @app = app
end
parse_uri_rfc2396(uri)

For historical reasons, we're pinning to RFC 2396. URI::Parser = URI::RFC2396_Parser

# File lib/rack/mock.rb, line 82
def self.parse_uri_rfc2396(uri)
  @parser ||= URI::Parser.new
  @parser.parse(uri)
end
Instance Public methods
delete(uri, opts={})
# File lib/rack/mock.rb, line 60
def delete(uri, opts={})  request(DELETE, uri, opts)  end
get(uri, opts={})
# File lib/rack/mock.rb, line 56
def get(uri, opts={})     request(GET, uri, opts)     end
head(uri, opts={})
# File lib/rack/mock.rb, line 61
def head(uri, opts={})    request(HEAD, uri, opts)    end
options(uri, opts={})
# File lib/rack/mock.rb, line 62
def options(uri, opts={}) request(OPTIONS, uri, opts) end
patch(uri, opts={})
# File lib/rack/mock.rb, line 59
def patch(uri, opts={})   request(PATCH, uri, opts)   end
post(uri, opts={})
# File lib/rack/mock.rb, line 57
def post(uri, opts={})    request(POST, uri, opts)    end
put(uri, opts={})
# File lib/rack/mock.rb, line 58
def put(uri, opts={})     request(PUT, uri, opts)     end
request(method=GET, uri="", opts={})
# File lib/rack/mock.rb, line 64
def request(method=GET, uri="", opts={})
  env = self.class.env_for(uri, opts.merge(:method => method))

  if opts[:lint]
    app = Rack::Lint.new(@app)
  else
    app = @app
  end

  errors = env[RACK_ERRORS]
  status, headers, body  = app.call(env)
  MockResponse.new(status, headers, body, errors)
ensure
  body.close if body.respond_to?(:close)
end