# Re: Code Review: Fix for File.print misbehavior **URL:** \ **Category:** IronRuby\ **Created:** [May 17, 2009, 1:13am UTC](https://www.ruby-forum.com/t/re-code-review-fix-for-file-print-misbehavior/168154 "2009-05-17T01:13:53Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![raker\_t](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/ecae2f/32.png) [@raker\_t](https://www.ruby-forum.com/u/raker_t)\ **Post date:** [May 17, 2009, 1:13am UTC](https://www.ruby-forum.com/t/re-code-review-fix-for-file-print-misbehavior/168154/1 "2009-05-17T01:13:53Z")
I would be opposed to making the MSpec runner depend on any more stdlibs. I would suggest making a helper that swaps the IOStub with the real stdout for the duration of a block. JD …there is no try Sent from my phone. Please excuse typos and txtspk. ---
**Author:** ![raker\_t](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/ecae2f/32.png) [@raker\_t](https://www.ruby-forum.com/u/raker_t)\ **Post date:** [May 17, 2009, 7:27am UTC](https://www.ruby-forum.com/t/re-code-review-fix-for-file-print-misbehavior/168154/2 "2009-05-17T07:27:10Z")
The “output” matcher from the snippet below swaps stdout with IOStub in order to be able to capture the output of the block. Swapping IOStub back with real stdout will not work as you will not know what the block printed… ``` lambda { $stdout.print(o, o2) }.should ``` output("#{o.to\_s}#{o2.to\_s}#{$}") One hybrid way to fix this would be for the “output” matcher to take an IO object as a second optional parameter that is used to capture the output intead of using IOStub. Then print\_spec.rb could provide a StringIO object. Currently, print\_spec.rb is busted and does not test what it is supposed to. Taking a dependency on a stdlib (stringio) would not be worse thing in this case. I do not feel strongly about fixing this right now… * * * From: removed\_email\_address@domain.invalid [removed\_email\_address@domain.invalid] On Behalf Of Jim D. [removed\_email\_address@domain.invalid] Sent: Saturday, May 16, 2009 4:05 PM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] Code Review: Fix for File.print misbehavior I would be opposed to making the MSpec runner depend on any more stdlibs. I would suggest making a helper that swaps the IOStub with the real stdout for the duration of a block. JD …there is no try Sent from my phone. Please excuse typos and txtspk.