Undefined method `inherit' for Merb::Test::ExampleGroup

Testing RSpec
1

RSpeckers:

I’m trying to install this into a Merb-generated RSpec rig:

http://code.jeremyevans.net/doc/fixture_dependencies/

It requires inserting their test case into RSpec. This is the documented
way to
do it:

describe ‘Post’ do
inherit FixtureDependencies::SequelTestCase

And that leads to the syntax error in the subject line. (No stack trace
is
available - ask the Merb spec runner why!)

Has anyone seen that one before?

–
Phlip

2

Hi Phlip,

Are you sure it’s inherit and not extend?
Second, I guess the missing trace is cuz you should
put a ‘before’ block into the describe.
Took me some time to figure that out last month…

so try this and let us know the results:

describe ‘Post’ do
before do
extend FixtureDependencies::SequelTestCase
end
end

ciao, tom

Am 01.02.2009 um 16:50 schrieb Phlip:

inherit FixtureDependencies::SequelTestCase

And that leads to the syntax error in the subject line. (No stack
trace is available - ask the Merb spec runner why!)

Has anyone seen that one before?

–
Thomas R. “TomK32” Koll <> http://ananasblau.com
just a geek trying to change the world
TomK32 (Thomas R. Koll) · GitHub

3

I have to bump this one because it looks like it’s on RSpec’s core
feature list,
and I reeally need a fix for it.

Feel free to blame Merb, if they munged the inherit() method somehow!

4

Thomas R. Koll wrote:

Are you sure it’s inherit and not extend?

Per the blogs, inherit() got invented to install Test::Unit::TestCase,
to get
its extra goodies. That’s a class, so you can’t extend or import it!

Were those blog entries since redacted?

Second, I guess the missing trace is cuz you should
put a ‘before’ block into the describe.

Huh? The trace is just missing; test runners should propagate it.

describe ‘Post’ do
before do
extend FixtureDependencies::SequelTestCase
end
end

Here’s the relevant bits that don’t work. (I changed the goal library to
the
‘assert2’ patched into Test::Unit::Assertions.)

require File.join( File.dirname(FILE), ‘…’, “spec_helper” )
require ‘test/unit’
require ‘assert2’

describe ‘Post’ do

before do
include Test::Unit::TestCase
# inherit Test::Unit::TestCase # does not compile
# include Test::Unit::Assertions # does not import assert{}
end

it ‘should have fixtures’ do
posts = posts(:Joan_Crawford_Has_Risen, :Jammin, :Sardonicus,
:Lithium)
posts[0].body.should == ‘From the Grave’
posts[0].tags.should include(tags(:progressive))

this line never compiles

 assert{ posts[0].tags.include? tags(:rocksteady) }

end

end

The rspec-rails plugin sure has me spoiled, huh? I formerly thought
Test::Unit::Assertions would be automatically available, even without
Rails
around…

–
Phlip

5

I’ll blame Merb on the basis that there is no “inherit” in RSpec. I’m
guessing it’s some kind of merb extension.

Pat

6

Pat M. wrote:

I’ll blame Merb on the basis that there is no “inherit” in RSpec. I’m
guessing it’s some kind of merb extension.

http://blog.davidchelimsky.net/2007/4/1/rspec-plays-nice-with-others

I know I know - time flies!

If it has been superseded, then how do you inject a batch of assertions
defined
in someone else’s class into RSpec?

For example, how does RSpec on Rails import its ActiveSupport::TestCase
assertions?

7

On Mon, Feb 2, 2009 at 8:36 PM, Phlip [email protected] wrote:

defined in someone else’s class into RSpec?

For example, how does RSpec on Rails import its ActiveSupport::TestCase
assertions?

rspec-rails defines Spec::Rails::Example::RailsExampleGroup that
inherits from ActiveSupport::TestCase. All other example groups are
subclasses of REG.

What you want to do is something along the lines of:

class SequelExampleGroup < FixtureDependencies::SequelTestCase
extend Spec::Example::ExampleGroupMethods
include Spec::Example::ExampleMethods

also any other modules that contain merb-specific expectations

Spec::Example::ExampleGroupFactory.register :sequel, self
end

describe ‘Post’, :type => :sequel do
…
end

(I don’t know that that’s exactly it, but it should get you going)

I think that forcing you to inherit from
FixtureDependencies::SequelTestCase is pretty sucky and I’m not sure
why they don’t just have some modules that you could mix in in the
Spec::Runner.configure block.

Pat

8

On Mon, Feb 2, 2009 at 10:36 PM, Phlip [email protected] wrote:

defined in someone else’s class into RSpec?
module MyMethods

define matchers

end

Spec::Runner.configure do |c|
c.include MyMethods
end

That will include the module in every example group, regardless of the
base class.

9

David C. wrote:

Spec::Runner.configure do |c|
c.include MyMethods
end

Tx that was it!