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def model_factory_helper(calling_spec, model_class, options) raise "factory_method requires default_attributes" unless options.has_key?(:default_attributes) raise "factory_method default_attributes must be a Hash" unless options[:default_attributes].is_a?(Hash) proper_class_name = model_class.name lowered_class_name = model_class.name.downcase calling_spec.instance_eval <<-"end;" module #{proper_class_name}HelperFactory def #{lowered_class_name}_default_attributes(options = {}) #{options[:default_attributes].inspect}.merge(options) end def #{lowered_class_name}_with(options = {}) options = {} if options == :all #{proper_class_name}.new(#{lowered_class_name}_default_attributes(options)) end def #{lowered_class_name}_without(field) #{proper_class_name}.new(#{lowered_class_name}_default_attributes(field => nil)) end def it_should_require_fields(*fields) fields.each do |field| it "should require \#{field}" do #{lowered_class_name}_without(field).should_not be_valid end end end end include #{proper_class_name}HelperFactory end; end

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