Convert NFS to new Warden style with 'recover' method

lib/vagrant/action/vm/nfs.rb

@@ -40,9 +40,10 @@ module Vagrant
           @app.call(env)
 
           mount_folders if !folders.empty?
+        end
 
-          # TODO: Make recover method
-          clear_nfs_exports(env) if env.error?
+        def recover(env)
+          clear_nfs_exports(env)
         end
 
         # Returns the folders which are to be synced via NFS.

test/vagrant/action/vm/nfs_test.rb

@@ -65,20 +65,12 @@ class NFSVMActionTest < Test::Unit::TestCase
         @instance.expects(:mount_folders).never
         @instance.call(@env)
       end
-
-      should "not mount folders if an error occured" do
-        seq = sequence("seq")
-        @app.expects(:call).in_sequence(seq).with() do
-          # Use this mark the env as error
-          @env.error!(:foo)
-
-          true
     end
 
-        @instance.expects(:clear_nfs_exports).with(@env).in_sequence(seq)
-
-        @instance.expects(:mount_folders).never
-        @instance.call(@env)
+    context "recovery" do
+      should "clear NFS exports" do
+        @instance.expects(:clear_nfs_exports).with(@env).once
+        @instance.recover(@env)
       end
     end