Remove dependent Resources first

* Minor tweak to code that loads plugins when running specs

spec/public/model_spec.rb

@@ -57,8 +57,12 @@ class Article
 
         describe 'between different models' do
           before :all do
+            @other.destroy
+            @article.destroy
+            @original.destroy
+
             # make sure the default repository is empty
-            @article_model.all(:repository => @repository).destroy!
+            @article_model.all(:repository => @repository).should be_empty
 
             # add an extra property to the alternate model
             DataMapper.repository(@alternate_adapter.name) do

spec/spec_helper.rb

@@ -12,8 +12,8 @@
 
 require 'dm-core'
 
-ENV['PLUGINS'].to_s.split(' ').each do |plugin|
-  require plugin.strip
+ENV['PLUGINS'].to_s.strip.split(/\s+/).each do |plugin|
+  require plugin
 end
 
 Pathname.glob((SPEC_ROOT + '{lib,*/shared}/**/*.rb').to_s).each { |file| require file }