gistfile1.rb

# When doing this:

class SomeError < Exception
  def initialize(some, args); end
end

describe 'bad message' do
  it 'raises an exception' do
    obj = stub
    obj.should_receive(:dude!).and_raise(SomeError)
    obj.dude!
  end
end

# We should get a failure, since RSpec can't initialize the exception,
# but I find the error a bit unhelpful:

#  1) bad message raises an exception
#     Failure/Error: def initialize(some, args); end
#     ArgumentError:
#       wrong number of arguments (0 for 2)
#     # ./bad_message.rb:2:in `initialize'
#     # ./bad_message.rb:6:in `some_method'
#     # ./bad_message.rb:13:in `block (2 levels) in <top (required)>'

# (especially in big projects, where you don't see the initialize() definition in the error

I want to make RSpec display something more meaningful to the user like "Dude, I can't initialize SomeError exception, wanna gimme an instance?"
Should I just make RSpec raise some new exception class that says this?