undefined method 'collection' for nil:nilClass when trying to run rspec test

undefined method 'collection' for nil:nilClass when trying to run rspec test

References

Reference NO 1

http://stackoverflow.com/questions/13640696/undefined-method-collection-for-nilnilclass-when-trying-to-run-rspec-test

Reference NO 2

http://stackoverflow.com/questions/10536846/why-is-this-rspec-test-throwing-a-undefined-method-call-for-nilnilclass-err

Reference NO 3

http://stackoverflow.com/questions/16347410/rails-rspec-undefined-method-cookie-jar-for-nilnilclass

Reference NO 4

http://kconrails.com/category/rails/

Reference NO 5

http://apidock.com/rails/Object/try

Reference NO 6

http://blog.carbonfive.com/2012/02/14/beginning-outside-in-rails-development-with-cucumber-and-rspec/

Reference NO 7

http://railsforum.com/viewtopic.php?id=37376

Reference NO 8

#EANF#