Rails - Jan 2012 - Write functional test cases for an rails app having no model

Hi,

I have a rails application that has a Application controller that
exposes REST API. And for the data I am using a third party module
instead of rails Model.

REST API:
  http://myApp/plugins

Route.rb:
  match "/plugins"  => "plugins#get_plugins", :via =>
"get"

My controller has following method:
  def get_plugins
    render :text=> third_party_module.get_plugins()
  end

third_party_module.get_plugins() is the third party module that returns
data.

Functional test file: plugins_controller_test.rb has the following test
method:
  test "should get plugins" do
    get :get_plugins
    assert_response :success
  end

When I am trying to run functional test, it gives following error:
"db/schema.rb doesn''t exist yet. Run "rake db:migrate"
to create it then
try again"

As I am not using any database.

Please help.

Regards,
Anil

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On Mon, Jan 2, 2012 at 7:25 PM, Anil Kumar
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> Hi,
>
> I have a rails application that has a Application controller that
> exposes REST API. And for the data I am using a third party module
> instead of rails Model.
>
> REST API:
>  http://myApp/plugins
>
> Route.rb:
>  match "/plugins"  => "plugins#get_plugins", :via
=> "get"
>
> My controller has following method:
>  def get_plugins
>    render :text=> third_party_module.get_plugins()
>  end
>
> third_party_module.get_plugins() is the third party module that returns
> data.
>
> Functional test file: plugins_controller_test.rb has the following test
> method:
>  test "should get plugins" do
>    get :get_plugins
>    assert_response :success
>  end
>
> When I am trying to run functional test, it gives following error:
> "db/schema.rb doesn''t exist yet. Run "rake
db:migrate" to create it then
> try again"
>
> As I am not using any database.
>
> Please help.
>
I can reproduce your problem.

On rails 3.1.3, when installing the "standard" way, I get this:

peterv@ASUS:~/b/rails-apps/apps/temp/with_AR$ rails new with_AR
--skip-bundle
...
# add gem ''therubyracer'' to Gemfile and run `bundle install`
...
peterv@ASUS:~/b/rails-apps/apps/temp/with_AR$ rake environment
peterv@ASUS:~/b/rails-apps/apps/temp/with_AR$ rake test:functionals
/home/peterv/data/backed_up/rails-apps/apps/temp/with_AR/db/schema.rb
doesn''t exist yet. Run "rake db:migrate" to create it then
try again. If
you do not intend to use a database, you should instead alter
/home/peterv/data/backed_up/rails-apps/apps/temp/with_AR/config/application.rb
to limit the frameworks that will be loaded

So, to me this is quite clear about the issue ...

As easy solution, I then installed without ActiveRecord (read `rails help`
to find out):

peterv@ASUS:~/b/rails-apps/apps/temp$ rails new without_AR --skip-bundle
--skip-active-record
...
# add gem ''therubyracer'' to Gemfile and run `bundle install`
...
peterv@ASUS:~/b/rails-apps/apps/temp/without_AR$ rake environment
peterv@ASUS:~/b/rails-apps/apps/temp/without_AR$ rake test:functionals
#=> OK

The difference is this:

peterv@ASUS:~/b/rails-apps/apps/temp/without_AR$ diff
../with_AR/config/application.rb config/application.rb
3c3,9
< require ''rails/all''
---
> # Pick the frameworks you want:
> # require "active_record/railtie"
> require "action_controller/railtie"
> require "action_mailer/railtie"
> require "active_resource/railtie"
> require "sprockets/railtie"
> require "rails/test_unit/railtie"
# So, replace the require ''replace/all'' with a selective
require

12c18
< module WithAR
---
> module WithoutAR
# this is just the name change (irrelevant)

You will see there are many more interesting options in `rails help`.

HTH,

Peter

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