From: Daniel Berger <djberg96@...>
Date: 2007-02-04T00:50:10+09:00
Subject: Re: Mixing Rake and Turn

On Feb 3, 5:40 am, Jan Friedrich <frd...@gmail.com> wrote:
> Daniel Berger wrote:
> > Upon further review, using TestTask#ruby_opts *does* work. The bug was
> > mine.
>
> > Anyhoo, for the sake of future Googlers, this is how you do it:
>
> > desc "Runs the test suite for the Foo class"
> > Rake::TestTask.new('test_foo') do |t|
> >    t.test_files = FileList['test/foo/*.rb'] # Or whatever
> >    t.ruby_opts << '-rturn'
> >    t.warning = true
> > end
>
> But you have now a dependency to turn. If you share your program with
> others they have to install turn if they want to use the test task. :(
>
> I prefer at the moment the following snipped on top of every test file:
>
> require 'test/unit'
> begin
>   require 'turn'
> rescue LoadError; end
>
> So you can running tests with or without turn installed.
>
> Other ideas?

In one project I have way too many files for that to be feasible. A
simpler approach would be to do this at the top of the Rakefile:

$turn = true
begin
   require 'turn'
rescue LoadError
   $turn = false
end

t.ruby_opts << '-rturn' if $turn

The only problem with that is that, as Tim mentioned earlier, you'll
get the bogus "zero" test results at the end (in addition to the real
results). To avoid that, we could check to see if the turn.rb file
merely exists instead of actually loading it:

require 'rbconfig'
include Config

$turn = false
$turn = true if File.exists?(File.join(CONFIG['sitelibdir'],
'turn.rb'))

t.ruby_opts << '-rturn' if $turn

This is what I plan on doing.

Regards,

Dan