rspec users - Oct 2010 - Strange return value

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

On Oct 1, 2010, at 6:11 AM, Zhi-Qiang Lei wrote:
> 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

How are you initializing the app object?

On Oct 1, 2010, at 8:48 PM, David Chelimsky wrote:
> On Oct 1, 2010, at 6:11 AM, Zhi-Qiang Lei wrote:
> 
>> 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
> 
> 
> How are you initializing the app object?
> 
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
As follow.

$:.unshift File.join(File.dirname(__FILE__), ''..'')

require ''main''
require ''rack/test''

describe EIOUAuthorization do

  include Rack::Test::Methods

  before :all do
    @person = Person.create(:email => ''zhiqiang.lei at
gmail.com'')
    @user = User.new
    @user.name = ''levin''
    @user.person = @person
    @user.password = ''password''
    @user.save
  end
 
  def unprotected_app
    lambda do |env|
      [200, {''Content-Type'' =>
''text/plain''}, [''Hello World!'']]
    end
  end
  
  def protected_app
    @protected_app ||= EIOUAuthorization.new(unprotected_app)
  end

  alias :app :protected_app

  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

  after :all do
    Person.all.destroy
    User.all.destroy
  end

end

Thanks you for the post.
Hi guys, Im a newbie. Nice to join this forum.



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