[rspec-users] Testing a rails controller *outside* of spec/controllers

David Chelimsky dchelimsky at gmail.com
Thu Mar 11 08:12:04 EST 2010


2010/3/11 Nicolás Sanguinetti <godfoca at gmail.com>:
> Scratch that, it works if you run just that file, if you run the whole
> suite it doesn't. WTH.

The fact that it works at all is an accident :)

>
> 2010/3/11 Nicolás Sanguinetti <godfoca at gmail.com>:
>> Interesting:
>>
>> describe SomeModule do
>>  describe "Bar", :type => :controller do
>>    controller_name "blah"
>>  end
>> end
>>
>> Doesn't work, while
>>
>> describe SomeModule do
>> end
>>
>> describe "Bar", :type => :controller do
>>  controller_name "blah"
>> end
>>
>> does.
>>
>> 2010/3/11 Nicolás Sanguinetti <godfoca at gmail.com>:
>>> On Thu, Mar 11, 2010 at 5:10 AM, Scott Taylor <scott at railsnewbie.com> wrote:
>>>>
>>>> On Mar 11, 2010, at 1:26 AM, Nicolás Sanguinetti wrote:
>>>>
>>>>> We have an app that has "extensions" that are built as rails engines.
>>>>> Each engine needs some code in the controllers, which we solved as
>>>>> "include this module, call a method". In order to test it, though, we
>>>>> don't want to "copy" the test for how that works into each engine, so
>>>>> the idea is to write the tests once, in 'spec/lib/extensions_spec.rb',
>>>>> where we are testing the other stuff that's common for all the
>>>>> extensions (which are defined on lib/extensions.rb, thus the spec's
>>>>> location)
>>>>>
>>>>> In order to do it, I'm declaring a 'sample' controller in the specs
>>>>> (just include the module, call the method), and then writing a couple
>>>>> specs for what we are doing. Problem is, I can't get rspec to
>>>>> understand that that example group is a controller example groups.
>>>>>
>>>>> I have
>>>>>
>>>>>    class MyExampleController < ApplicationController
>>>>>      include Extensions::ControllerHelpers
>>>>>      call_awesome_method # this, among other things, defines an
>>>>> instance method on the controller that I want to test
>>>>>    end
>>>>>
>>>>> inside my spec, and after that I tried:
>>>>>
>>>>> 1) describe("controller helpers", :type => :controller) {
>>>>> controller_name "my_example"; ... }
>>>>>
>>>>> It complains about controller_name not being a method of this dynamic
>>>>> subclass of ActiveSupport::TestCase.
>>>>
>>>> That seems like a really strange error.  What is the actual stack trace?
>>>
>>> ./spec/lib/extensions_spec.rb:20: undefined method `controller_name'
>>> for ActiveSupport::TestCase::Subclass_1:Class (NoMethodError)
>>>        from $gem_path/rspec-1.3.0/lib/spec/example/example_group_methods.rb:183:in
>>> `module_eval'
>>>        from $gem_path/rspec-1.3.0/lib/spec/example/example_group_methods.rb:183:in
>>> `subclass'
>>>        from $gem_path/rspec-1.3.0/lib/spec/example/example_group_methods.rb:55:in
>>> `describe'
>>>        from $gem_path/rspec-1.3.0/lib/spec/example/example_group_factory.rb:31:in
>>> `create_example_group'
>>>        from $gem_path/rspec-1.3.0/lib/spec/dsl/main.rb:28:in `describe'
>>>        from ./spec/lib/extensions_spec.rb:19
>>>        from $gem_path/activesupport-2.3.5/lib/active_support/dependencies.rb:147:in
>>> `load_without_new_constant_marking'
>>>        from $gem_path/activesupport-2.3.5/lib/active_support/dependencies.rb:147:in
>>> `load'
>>>        from $gem_path/rspec-1.3.0/lib/spec/runner/example_group_runner.rb:15:in
>>> `load_files'
>>>        from $gem_path/rspec-1.3.0/lib/spec/runner/example_group_runner.rb:14:in `each'
>>>        from $gem_path/rspec-1.3.0/lib/spec/runner/example_group_runner.rb:14:in
>>> `load_files'
>>>        from $gem_path/rspec-1.3.0/lib/spec/runner/options.rb:133:in `run_examples'
>>>        from $gem_path/rspec-1.3.0/lib/spec/runner/command_line.rb:9:in `run'
>>>        from script/spec:10
>>>
>>> (sanitized it a bit)
>>>
>>>> What versions of the test-unit gem do you have installed?  What version of rails?  rspec?  If you uninstall the test-unit gem, will it work with the :type => :controller hash given to describe?
>>>
>>> This is using rails 2.3.5, rspec 1.3.0, and rspec-rails 1.3.2. I do
>>> not have test-unit on this system, I have mocha 0.9.8 (though it
>>> shouldn't be required in the environment by anyone here)
>>>
>>>> (I've noticed *very* strange things with the test-unit gem installed in the past - such as a test suite which was 100% green, using a hybrid of mocha + rspec mocks/stubs.  When the gem was uninstalled, half the test suite failed!)
>>>>
>>>>> After some time reading the source I figured that :type => :controller
>>>>> pretty much just works for config.include/config.extend. So on to the
>>>>> next thing:
>>>>
>>>> Have you taken a look at Spec::Example::ExampleGroupFactory?
>>>
>>> Ah, darn, I hadn't gotten that far into rspec's rabbit hole, and
>>> missed the reference in rspec-rails. That's what you get for trying to
>>> debug stuff at 4am :) So, :type => :controller should be enough, then.
>>>
>>> Still, doing:
>>>
>>> describe MyExampleController, :type => :controller do
>>>  it "should do stuff" do
>>>    controller.should_receive(:foo)
>>>    controller.extension.bar
>>>  end
>>> end
>>>
>>> Fails with 'undefined local variable or method `controller' for
>>> #<ActiveSupport::TestCase::Subclass_1::Subclass_4:0x1075ca230>'
>>>
>>> And replacing controller with @controller gives me 'undefined method
>>> `bar' for nil:NilClass'. Which is pretty much the same results I got a
>>> few hours ago before going to sleep :(
>>>
>>> …So :type => :controller is apparently not enough for rspec to pick up on this.
>>>
>>>> Not sure if this will help, but here's a patch that brynary and I banged out way back in rspec 1.1.9 to support spec/unit & spec/integration: (the usual disclaimer applies - all the good parts are his, all the bad parts are mine)
>>>>
>>>> http://gist.github.com/328919
>>>
>>> Thanks :)
>>>
>>>> That piece of the code might at least take you to a place where you can debug what's going on.
>>>>
>>>> Best,
>>>>
>>>> Scott
>>>>
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>>>>
>>>
>>
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