Strange return value

Testing RSpec
1

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.

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:incall’
/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:inprocess_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

2

On Oct 1, 2010, at 6:11 AM, Zhi-Qiang L. wrote:

def call(env)
#private
end

2 examples, 1 failure
How are you initializing the app object?

3

On Oct 1, 2010, at 8:48 PM, David C. wrote:

@app = app
end
auth.opaque = ‘opaque-for-’ + user.realm
end
F.
Finished in 0.024267 seconds

2 examples, 1 failure

How are you initializing the app object?

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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 => ‘[email protected]’)
@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

4

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