         # Validate the configuration.
         # TODO - compare to the mock values for each encounter
         # and each demographic and outcome value.
+        # TODO - test the age property.
         # TODO - these should be broken out into test cases.
         # TODO - add expect message arguments.
         expect(config.encounters).to.exist

                encounter_type: "Biopsy"
              }
              {
                date: new Date
                outcomes: [
                  # tnm: {
                  #   #

      # TODO - change mock to conform with REST model and
      # rerun after clinical is refactored per the app TODOs.
      mock =
        # TODO - Use the resource data model to create the mock subject.          
        subject:
          # The anonymized birth date is July 7.
          birth_date: moment([1985, 6, 7])
          races: ['Black', 'Asian']
          ethnicity: 'Non-Hispanic'
          encounters:
            [
              {
                date: moment([2014, 2, 12])
                outcomes: [
                  # TODO - grade is an aggregate.
                  # tnm: {
                  #   grade: 2
                  #   lymph_status: 3
