old_contents: var Roman = require('../../libraries/Roman');
  
  describe('The `Roman` numeral conversion library', function () {
      describe('when using the `getIntegerToRoman` method', function() {
          it('should return `123` when given `CXXIII`', function() {
              expect(Roman.getIntegerToRoman('CXXIII')).toBe(123);
          });
  
          it('should return `3999` when given `MMMCMXCIX`', function() {
              expect(Roman.getIntegerToRoman('MMMCMXCIX')).toBe(3999);
          });
  
          it('should return `0` when given an empty string', function() {
              expect(Roman.getIntegerToRoman('')).toBe(0);
          });
      });
  
      describe('when using the `getRomanToInteger` method', function() {
          it('should return `CXXIII` when given `123`', function() {
              expect(Roman.getRomanToInteger(123)).toBe('CXXIII');
          });
  
          it('should return `MMMCMXCIX` when given `3999`', function() {
              expect(Roman.getRomanToInteger(3999)).toBe('MMMCMXCIX');
          });
  
          it('should return an empty string when given `0`', function() {
              expect(Roman.getRomanToInteger(0)).toBe('');
          });
      });
  });
  
new_contents: var Roman = require('../../libraries/Roman');
  
  describe('The `Roman` numeral conversion library', function () {
      describe('when using the `getIntegerToRoman` method', function() {
          it('should return `123` when given `CXXIII`', function() {
              expect(Roman.getIntegerFromRoman('CXXIII')).toBe(123);
          });
  
          it('should return `3999` when given `MMMCMXCIX`', function() {
              expect(Roman.getIntegerFromRoman('MMMCMXCIX')).toBe(3999);
          });
  
          it('should return `0` when given an empty string', function() {
              expect(Roman.getIntegerFromRoman('')).toBe(0);
          });
      });
  
      describe('when using the `getRomanToInteger` method', function() {
          it('should return `CXXIII` when given `123`', function() {
              expect(Roman.getRomanFromInteger(123)).toBe('CXXIII');
          });
  
          it('should return `MMMCMXCIX` when given `3999`', function() {
              expect(Roman.getRomanFromInteger(3999)).toBe('MMMCMXCIX');
          });
  
          it('should return an empty string when given `0`', function() {
              expect(Roman.getRomanFromInteger(0)).toBe('');
          });
      });
  });
  
subject: Update RomanLibrary-spec.js