result.rb in cmds-0.2.1

- old
+ new

@@ -1,9 +1,7 @@
 require 'nrser/refinements'
 
-using NRSER
-
 class Cmds
   # a simple data structure returned from calling {Cmds#capture} 
   # on a {Cmd} instance.
   # 
   # it contains the exit status code, standard output and standard error,
@@ -53,17 +51,10 @@
     # @return [Result] it's self (so that it can be chained).
     #
     # @raise [SystemCallError] if the command failed.
     #
     def assert
-      if error?
-        msg = <<-BLOCK.squish
-          command `#{ @cmd }` exited with status #{ @status }
-          and stderr #{ err.inspect }
-        BLOCK
-
-        raise SystemCallError.new msg, @status
-      end
+      Cmds.check_status @cmd, @status, @err
       self
     end # raise_error
   end # Result
 end # Cmds