txus
wrong constant name Virtus::Coercion::String (NameError)
it's me again :)
An exception occurred running /Users/solnic/.rvm/gems/rbx-head@virtus/bin/mutate
wrong constant name Virtus::Coercion::String (NameError)
Backtrace:
Rubinius::Type.coerce_to_constant_name at kernel/common/type.rb:109
Module(Class)#const_set at kernel/common/module.rb:445
Class#initialize at kernel/common/class18.rb:12
Rubinius.open_class_under at kernel/delta/rubinius18.rb:13
Rubinius.open_class at kernel/delta/rubinius.rb:26
Object#__script__ at lib/virtus/coercion/string.rb:1
{ } in Mutant::Mutator#mutate at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant/mutator.rb:27
Array#each at kernel/bootstrap/array.rb:68
Mutant::Mutator#mutate at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant/mutator.rb:20
{ } in Mutant.mutate at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant.rb:25
Array#each at kernel/bootstrap/array.rb:68
Mutant.mutate at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant.rb:24
Mutant::Runners::RSpec#mutate at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant/runners/rspec.rb:29
Mutant::Runners::RSpec.run at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant/runners/rspec.rb:11
Mutant.run at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/../lib/mutant.rb:20
Object#__script__ at /Users/solnic/.rvm/gems/rbx-head@virtus
/bundler/gems/mutant-68dd0a44a6b4/exe
/mutate:6
Kernel(Object)#load at kernel/common/kernel.rb:577
Object#__script__ at /Users/solnic/.rvm/gems/rbx-head@virtus
/bin/mutate:19
Rubinius::CodeLoader#load_script at kernel/delta/codeloader.rb:67
Rubinius::CodeLoader.load_script at kernel/delta/codeloader.rb:109
Rubinius::Loader#script at kernel/loader.rb:632
Rubinius::Loader#main at kernel/loader.rb:836
Looking at the stacktrace, just before the exception is thrown Module#const_set is called, then Rubinius::Type.coerce_to_constant_name is called and passed (presumably) whatever was passed into const_set.
Now, based on the error message it looks like the string "Virtus::Coercion::String" was passed in to const_set, which is obviously incorrect. A constant cannot contain colons.
So I'm guessing that wherever the class/module is being set it needs to split up the string and create a "chain" of modules, first "Virtus", then inside that "Coercion", then inside that "String. It would probably have to be smart about using a class or module as appropriate, and setting the correct superclass if applicable. (just a guess)
I think that place may be Mutant::Mutator#class_ast but I'm not 100% familiar with the internals of the mutator atm.
@txus does that sound right?
Makes sense. You're running that on Virtus right? Could you paste me the bin/mutate ... command you used so that I can reproduce it? I'm not sure about the place where this is happening but Mutant::Mutator#class_ast sounds like a good place to start looking, I'll find out.
In my case I ran it against another project of mine, but I had to do some tweaking to get it to work under rspec 2.
At the moment I'm using RSpec 1 in the master branch, but I'll create an rspec2 branch to make it easier to repro.
Here are steps to repro: (I would assume any rbx would repro this, but I was using rbx-head)
rvm rbx-head
git clone git://github.com/dkubb/ice_nine.git
cd ice_nine
git checkout rspec2
gem install bundler && bundle
bundle exec mutate "IceNine::Freezer::Object.deep_freeze" spec/unit/ice_nine/freezer/object/class_methods/deep_freeze_spec.rb
EDIT: the exception I see is wrong constant name IceNine::Freezer::Object (NameError) and the backtrace is:
Rubinius::Type.coerce_to_constant_name at kernel/common/type.rb:118
Module(Class)#const_set at kernel/common/module.rb:446
Class#initialize at kernel/common/class18.rb:11
Rubinius.open_class_under at kernel/delta/rubinius18.rb:13
Rubinius.open_class at kernel/delta/rubinius.rb:26
Object#__script__ at lib/ice_nine/freezer/object.rb:1
{ } in Mutant::Mutator#mutate at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant/mutator.rb:27
Array#each at kernel/bootstrap/array.rb:68
Mutant::Mutator#mutate at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant/mutator.rb:20
{ } in Mutant.mutate at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant.rb:25
Array#each at kernel/bootstrap/array.rb:68
Mutant.mutate at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant.rb:24
Mutant::Runners::RSpec#mutate at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant/runners/rspec.rb:29
Mutant::Runners::RSpec.run at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant/runners/rspec.rb:11
Mutant.run at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/../lib/mutant.rb:20
Object#__script__ at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/gems/mutant-0.1.1
/exe/mutate:6
Kernel(Object)#load at kernel/common/kernel.rb:576
Object#__script__ at /Users/dkubb/.rvm/gems
/rbx-head@ice_nine/bin/mutate:19
Rubinius::CodeLoader#load_script at kernel/delta/codeloader.rb:67
Rubinius::CodeLoader.load_script at kernel/delta/codeloader.rb:109
Rubinius::Loader#script at kernel/loader.rb:632
Rubinius::Loader#main at kernel/loader.rb:836
Ok, I started to poke around with this. I tried a few hacky attempts to get the AST for a class (or module) and I wasn't satisfied with any of them. I found it a bit hard to even tell if I was on the right track since the docs for this part of Rubinius are pretty sparse.
I'll give it a try again later this week, but I wanted to report that I tried for a couple of hours and didn't make any forward progress on this.