# RCov **URL:** \ **Category:** IronRuby\ **Created:** [January 22, 2010, 7:12pm UTC](https://www.ruby-forum.com/t/rcov/182108 "2010-01-22T19:12:14Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [January 22, 2010, 7:12pm UTC](https://www.ruby-forum.com/t/rcov/182108/1 "2010-01-22T19:12:14Z")
I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [January 22, 2010, 7:38pm UTC](https://www.ruby-forum.com/t/rcov/182108/2 "2010-01-22T19:38:00Z")
I think rcov is c-based ☹ JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Ryan R. Sent: Friday, January 22, 2010 10:12 AM To: removed\_email\_address@domain.invalid Subject: [Ironruby-core] RCov I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [January 22, 2010, 7:54pm UTC](https://www.ruby-forum.com/t/rcov/182108/3 "2010-01-22T19:54:23Z")
The core is C-based. Most of it is in Ruby. This is just similar to ruby-debug which also has a small C-based core. Both would need a small hook from IronRuby. So its certainly feasible to support it, but at this point, it will be post-1.0 However, you would only get coverage for Ruby code. For profiling .NET code, you have to use .NET profilers like the one in VS. From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Jim D. Sent: Friday, January 22, 2010 10:34 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov I think rcov is c-based ☹ JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Ryan R. Sent: Friday, January 22, 2010 10:12 AM To: removed\_email\_address@domain.invalid Subject: [Ironruby-core] RCov I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [January 22, 2010, 9:06pm UTC](https://www.ruby-forum.com/t/rcov/182108/4 "2010-01-22T21:06:59Z")
That’s what I thought. Thanks for the responses. Ryan R. Email: removed\_email\_address@domain.invalid LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [March 8, 2010, 8:14pm UTC](https://www.ruby-forum.com/t/rcov/182108/5 "2010-03-08T20:14:39Z")
Just noticed that RCov can work in pure Ruby mode without the C-based core known as “rcovrt”. The pure Ruby mode is two orders of magnitude slower. Just FYI. There is still the issue that it will not profile .NET code… From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Shri B. Sent: Friday, January 22, 2010 10:53 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov The core is C-based. Most of it is in Ruby. This is just similar to ruby-debug which also has a small C-based core. Both would need a small hook from IronRuby. So its certainly feasible to support it, but at this point, it will be post-1.0 However, you would only get coverage for Ruby code. For profiling .NET code, you have to use .NET profilers like the one in VS. From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Jim D. Sent: Friday, January 22, 2010 10:34 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov I think rcov is c-based ☹ JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Ryan R. Sent: Friday, January 22, 2010 10:12 AM To: removed\_email\_address@domain.invalid Subject: [Ironruby-core] RCov I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [March 8, 2010, 8:31pm UTC](https://www.ruby-forum.com/t/rcov/182108/6 "2010-03-08T20:31:03Z")
Interesting to know though. Thanks for sharing! JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Shri B. Sent: Monday, March 08, 2010 11:14 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov Just noticed that RCov can work in pure Ruby mode without the C-based core known as “rcovrt”. The pure Ruby mode is two orders of magnitude slower. Just FYI. There is still the issue that it will not profile .NET code… From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Shri B. Sent: Friday, January 22, 2010 10:53 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov The core is C-based. Most of it is in Ruby. This is just similar to ruby-debug which also has a small C-based core. Both would need a small hook from IronRuby. So its certainly feasible to support it, but at this point, it will be post-1.0 However, you would only get coverage for Ruby code. For profiling .NET code, you have to use .NET profilers like the one in VS. From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Jim D. Sent: Friday, January 22, 2010 10:34 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov I think rcov is c-based ☹ JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Ryan R. Sent: Friday, January 22, 2010 10:12 AM To: removed\_email\_address@domain.invalid Subject: [Ironruby-core] RCov I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/) ---
**Author:** ![ryan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/a8b319/32.png) [@ryan](https://www.ruby-forum.com/u/ryan)\ **Post date:** [March 11, 2010, 7:15pm UTC](https://www.ruby-forum.com/t/rcov/182108/7 "2010-03-11T19:15:20Z")
Any guesses what this code prints? SCRIPT\_LINES\_\_ = {} require “rubygems” puts SCRIPT\_LINES\_\_.size If you thought 0 like me, you are wrong. Its prints 31 with MRI. I was trying to get IronRuby to work with rcov in the pure Ruby mode, and was completely baffled why it was not working for IronRuby. Turns out SCRIPT\_LINES\_\_ is a magic constant that contains the mapping from the names of all the loaded files to their content. There is a comment about it in the IronRuby sources, but it is an unimplemented feature. The pure-Ruby RCov mode depends on this, and so it does not work with IronRuby. From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Jim D. Sent: Monday, March 08, 2010 11:25 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov Interesting to know though. Thanks for sharing! JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Shri B. Sent: Monday, March 08, 2010 11:14 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov Just noticed that RCov can work in pure Ruby mode without the C-based core known as “rcovrt”. The pure Ruby mode is two orders of magnitude slower. Just FYI. There is still the issue that it will not profile .NET code… From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Shri B. Sent: Friday, January 22, 2010 10:53 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov The core is C-based. Most of it is in Ruby. This is just similar to ruby-debug which also has a small C-based core. Both would need a small hook from IronRuby. So its certainly feasible to support it, but at this point, it will be post-1.0 However, you would only get coverage for Ruby code. For profiling .NET code, you have to use .NET profilers like the one in VS. From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Jim D. Sent: Friday, January 22, 2010 10:34 AM To: removed\_email\_address@domain.invalid Subject: Re: [Ironruby-core] RCov I think rcov is c-based ☹ JD From: removed\_email\_address@domain.invalid [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Ryan R. Sent: Friday, January 22, 2010 10:12 AM To: removed\_email\_address@domain.invalid Subject: [Ironruby-core] RCov I know everyone is using IronRuby for their testing, but what about code coverage? Has anyone tried RCov with a .NET app? Ryan R. Email: removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley) Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) Twitter: @panesofglass Website: [http://panesofglass.org/](http://panesofglass.org/)