vendor/gems/rspec-1.1.2/lib/spec/example/example_group_factory.rb

   1 module Spec
   2   module Example
   3     class ExampleGroupFactory
   4       class << self
   5         def reset
   6           @example_group_types = nil
   7           default(ExampleGroup)
   8         end
   9
  10         # Registers an example group class +klass+ with the symbol
  11         # +type+. For example:
  12         #
  13         #   Spec::Example::ExampleGroupFactory.register(:farm, Spec::Farm::Example::FarmExampleGroup)
  14         #
  15         # This will cause Main#describe from a file living in
  16         # <tt>spec/farm</tt> to create example group instances of type
  17         # Spec::Farm::Example::FarmExampleGroup.
  18         def register(id, example_group_class)
  19           @example_group_types[id] = example_group_class
  20         end
  21
  22         # Sets the default ExampleGroup class
  23         def default(example_group_class)
  24           old = @example_group_types
  25           @example_group_types = Hash.new(example_group_class)
  26           @example_group_types.merge(old) if old
  27         end
  28
  29         def get(id=nil)
  30           if @example_group_types.values.include?(id)
  31             id
  32           else
  33             @example_group_types[id]
  34           end
  35         end
  36
  37         def create_example_group(*args, &block)
  38           opts = Hash === args.last ? args.last : {}
  39           if opts[:shared]
  40             SharedExampleGroup.new(*args, &block)
  41           else
  42             superclass = determine_superclass(opts)
  43             superclass.describe(*args, &block)
  44           end
  45         end
  46
  47         protected
  48
  49         def determine_superclass(opts)
  50           id = if opts[:type]
  51             opts[:type]
  52           elsif opts[:spec_path] =~ /spec(\\|\/)(#{@example_group_types.keys.join('|')})/
  53             $2 == '' ? nil : $2.to_sym
  54           end
  55           get(id)
  56         end
  57
  58       end
  59       self.reset
  60     end
  61   end
  62 end