Memoizing at the Class level wreaks havoc on the specs.

spec/foreman/export/bluepill_spec.rb

@@ -12,7 +12,7 @@ describe Foreman::Export::Bluepill do
   before(:each) { stub(bluepill).say }
 
   it "exports to the filesystem" do
-    bluepill.export("/tmp/init")
+    bluepill.export("/tmp/init", :concurrency => "alpha=2")
     
     File.read("/tmp/init/app.pill").should == example_export_file("bluepill/app.pill")
   end

spec/foreman/export/upstart_spec.rb

@@ -12,7 +12,7 @@ describe Foreman::Export::Upstart do
   before(:each) { stub(upstart).say }
 
   it "exports to the filesystem" do
-    upstart.export("/tmp/init")
+    upstart.export("/tmp/init", :concurrency => "alpha=2")
 
     File.read("/tmp/init/app.conf").should         == example_export_file("upstart/app.conf")
     File.read("/tmp/init/app-alpha.conf").should   == example_export_file("upstart/app-alpha.conf")