Kaboom

[joshcheek]

Kaboom

[JoshCheek]

Preliminary guess: RSpec and SeeingIsBelieving are fighting over at_exit hooks. I'll look into it more over the weekend.

[JoshCheek]

Also, it looks like your version is old (I should totally include the version info in that output >.<) because SIB serializes with YAML since version 0.0.23, but yours looks like Marshal

[JoshCheek]

NVM, I just reproduced it >.<

[JoshCheek]

Okay, it doesn't blow up in the version that's about to be released, which you can get early if you want, it's on the switching_to_parser branch. I'll add a regression test for it, too.

[JoshCheek]

Well, this is what I get for going through this at 2AM while sauced, I had version 0.0.22 installed on the version of Ruby I was looking at. It is actually fixed in the currently released 1.0.0. It had to do with invoking a method that was not defined. Ruby raises a NameError, but it's message is not actually an instance of String, it's an instance of NameError::message which is not a valid class name, and can't be allocated (instead of calling .new on it, you call .! (I shit you not)) and thus was unable to deserialize it. I've had a workaround for that for a while now (basically serializing backtraces and messages independently of the exceptions).

Here is an example of what was happening.

require 'yaml'

# get a NameError with a message that isn't a String
exception = nil
begin
  abc
rescue
  exception = $! # => #<NameError: undefined local variable or method `abc' for main:Object>
end


# get the message class (b/c its name is invalid, can't just do `NameError::message` or even `NameError.const_get :message`)
message_class = nil
ObjectSpace.each_object(Class) { |c| message_class = c if c.name == 'NameError::message' }
message_class # => NameError::message


# show that you can't instantiate it with .new, (because it delegates to .allocate, which is undefined... good troll, Ruby, good troll)
begin
  message_class.new
rescue
  $! # => #<TypeError: allocator undefined for NameError::message>
end


# so how do we instantiate this thing? with `.!`, of course, lol
new_message = message_class.! 'o', 'm', 'g' # => #<NameError::message:0x007f836b07eae0>
new_message.to_str                          # => "o"


# show that the instance of this class is our message
message = nil
ObjectSpace.each_object(message_class) { |m| message = m }
message
message.to_str
exception.message # => "undefined local variable or method `abc' for main:Object"


# an example showing we can't serialize the exception because of this message class
YAML.load YAML.dump exception  # ~> TypeError: allocator undefined for NameError::message

# ~> TypeError
# ~> allocator undefined for NameError::message
# ~>
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:303:in `allocate'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:303:in `revive'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:178:in `visit_Psych_Nodes_Mapping'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:15:in `visit'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:5:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:20:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:210:in `block in visit_Psych_Nodes_Mapping'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:210:in `map'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:210:in `visit_Psych_Nodes_Mapping'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:15:in `visit'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:5:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:20:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:240:in `visit_Psych_Nodes_Document'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:15:in `visit'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/visitor.rb:5:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/visitors/to_ruby.rb:20:in `accept'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych/nodes/node.rb:35:in `to_ruby'
# ~> /Users/joshcheek/.rbenv/versions/2.0.0-p0/lib/ruby/2.0.0/psych.rb:130:in `load'
# ~> /var/folders/80/_k3gdsls7vs760m_8v6h651w0000gn/T/seeing_is_believing_temp_dir20130809-69619-1h6c2i0/program.rb:40:in `<main>'