How do we test a Rails Model which does not have an equivalent table in the backend using RSpec

I have a Moderator model which basically queries web site related
stat results from other models.

An e.g. of displayed stats could be the total number of users belonging
to a particular area out of many areas in a city. Limiting the number of
such records to a fixed number. For this, the body defined within the
Moderator model makes use of an Area model.

Since the queries are not using anything from the same model, but
actually from other models, there wasn’t a need for me to have a table
migration wrt this model.

I basically am now trying to test the defined methods in the Moderator
model using Rspec.
What I am basically trying to test is that a call to the method should
return success, this I am doing through:-

subject.send(:method_name)
response.should be_success

I’m getting a common error for all such defined methods saying that
database_name.table_name does not exist. Well , this is true but how
should is it really making a difference?, and how to get a work around
for this to just test a simple use case of calling a method successfully
in the above context.

Thanks.

I’m getting a common error for all such defined methods saying that>
database_name.table_name does not exist. Well , this is true but how> should is
it really making a difference?, and how to get a work around> for this to just
test a simple use case of calling a method successfully> in the above context.
I don’t believe this issue has anything to do with RSpec (you’d see
the same if you used MiniTest or any other tool).

You want to have Moderator be a simple Ruby object, or possibly have
it inherit from ActiveModel rather than ActiveRecord.

Best,
Sidu.
http://c42.in
http://rubymonk.com

Sidu P. wrote in post #1032900:

I’m getting a common error for all such defined methods saying that>
database_name.table_name does not exist. Well , this is true but how>
should is
it really making a difference?, and how to get a work around> for this
to just
test a simple use case of calling a method successfully> in the above
context.
I don’t believe this issue has anything to do with RSpec (you’d see
the same if you used MiniTest or any other tool).

You want to have Moderator be a simple Ruby object, or possibly have
it inherit from ActiveModel rather than ActiveRecord.

Best,
Sidu.
http://c42.in
http://rubymonk.com

Thanks for your inputs Sidu,I tried replacing ActiveRecord with
ActiveModel got the following error:-

/home/mohnish/.rvm/gems/ruby-1.9.2-p180/gems/restfulie-1.0.3/lib/restfulie/server/action_controller/patch.rb:2:
warning: already initialized constant HTTP_METHODS
/home/mohnish/Cognizant/socialtango/app/models/admin_stats.rb:1:in `<top
(required)>’: uninitialized constant ActiveModel::Base (NameError)

Seems like, I will have to look for another workaround…

Mohnish J. wrote in post #1033006:

Sidu P. wrote in post #1032900:

I’m getting a common error for all such defined methods saying that>
database_name.table_name does not exist. Well , this is true but how>
should is
it really making a difference?, and how to get a work around> for this
to just
test a simple use case of calling a method successfully> in the above
context.
I don’t believe this issue has anything to do with RSpec (you’d see
the same if you used MiniTest or any other tool).

You want to have Moderator be a simple Ruby object, or possibly have
it inherit from ActiveModel rather than ActiveRecord.

Best,
Sidu.
http://c42.in
http://rubymonk.com

Thanks for your inputs Sidu,I tried replacing ActiveRecord with
ActiveModel got the following error:-

/home/mohnish/.rvm/gems/ruby-1.9.2-p180/gems/restfulie-1.0.3/lib/restfulie/server/action_controller/patch.rb:2:

warning: already initialized constant HTTP_METHODS
/home/mohnish/Cognizant/socialtango/app/models/admin_stats.rb:1:in `<top
(required)>’: uninitialized constant ActiveModel::Base (NameError)

Seems like, I will have to look for another workaround…

Well,

The below line code did work for me:-

Model_name.method_name.should_not be_nil

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