[rspec-users] Strange return value

Zhi-Qiang Lei zhiqiang.lei at gmail.com
Fri Oct 1 07:11:27 EDT 2010


Dear All,

I meet a strange issue when I test my Rack Middleware. Could anyone help me to point the error out? Thanks.

This is the code.

class EIOUAuthorization
  def initialize(app)
    @app = app
  end
  def call(env)
    request = Rack::Request.new(env)
    path_strings = request.path_info.split('/', 4)
    if path_strings[1] == 'people'
      user = User.get(path_strings[2])
      return not_found if user.nil?
      digest_authentication(user).call(env)
    else
      @app.call(env)
    end
  end
  #private
  def not_found
    [404, {'Content-Type' => 'text/plain', 'Content-Length' => '0'}, []]
  end
  def digest_authentication(user)
    auth = Rack::Auth::Digest::MD5.new(@app, user.realm) do |email|
      {user.person.email => user.ha1}[email]
    end
    auth.passwords_hashed = true
    auth.opaque = 'opaque-for-' + user.realm
    auth
  end
end

And this is my test case.

  describe '#call' do
    it 'should call digest_authentication method with id when get /people/{person-id}' do
      app.should_receive(:digest_authentication).with(@user).once
      get "/people/#{@person.id}"
    end
  end

  describe '#digest_authentication' do
    it 'should respond to call' do
      app.digest_authentication(@user).should respond_to(:call)
    end
  end

From the result we can see the #digest_authentication is called, and the result should respond to call. But the fact is that it return a nil object in the code.

F.

1)
NoMethodError in 'EIOUAuthorization#call should call digest_authentication method with id when get /people/{person-id}'
undefined method `call' for nil:NilClass
./spec/../main.rb:21:in `call'
/Library/Ruby/Gems/1.8/gems/rack-test-0.5.4/lib/rack/mock_session.rb:30:in `request'
/Library/Ruby/Gems/1.8/gems/rack-test-0.5.4/lib/rack/test.rb:207:in `process_request'
/Library/Ruby/Gems/1.8/gems/rack-test-0.5.4/lib/rack/test.rb:57:in `get'
./spec/eiou_authorization.rb:34:

Finished in 0.024267 seconds

2 examples, 1 failure

Best regards,
Lei, Zhi-Qiang


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