Method: Remi::Testing::BusinessRules::DataFieldCollection#only

Defined in:
lib/remi/testing/business_rules.rb

#only ⇒ Object 



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# File 'lib/remi/testing/business_rules.rb', line 443

def only
  raise "Multiple subject fields defined: #{keys}" if @fields.size > 1
  @fields.values.first
end