exception actions with no parameters cannot be taken

[goatshriek]

If a throw-exception action is defined with a constructor that does not take any parameters, then an Exception is raised when the take method is called on the ActionSpec instance. A simple example spec looks like:

name: "throw-exception"
constructor:
  name: "NoParamException"

Calling take on this results in this error:

2.7.1 :004 > spec.take                                                                                                                                                                                                          Traceback (most recent call last):
        7: from /home/angel/.rvm/gems/ruby-2.7.1/bin/ruby_executable_hooks:24:in `<main>'
        6: from /home/angel/.rvm/gems/ruby-2.7.1/bin/ruby_executable_hooks:24:in `eval'
        5: from /home/angel/.rvm/gems/ruby-2.7.1/bin/irb:23:in `<main>'
        4: from /home/angel/.rvm/gems/ruby-2.7.1/bin/irb:23:in `load'
        3: from /home/angel/.rvm/gems/ruby-2.7.1/gems/irb-1.2.4/exe/irb:11:in `<top (required)>'
        2: from (irb):4
        1: from /mnt/c/Users/reall/code/wrapture/lib/wrapture/action_spec.rb:69:in `take'
NoMethodError (undefined method `map' for nil:NilClass)