gistfile1.js

  /*
    Retrieve the name of the the optimizely test with DFP in it and then parse out the number after AB-###.

    This is for the ad-ops team to use as a way to know what tests are running on the pages that they are serving up ads
    
    Test names should follow this pattern: AB-123 description dfp
   */
  function getDFP() {
    if ('undefined' != typeof optimizely && 'undefined' != typeof optimizely.allExperiments && 'undefined' != typeof optimizely.variationMap) {
      var allTests = optimizely.allExperiments;
      var variationMap = optimizely.variationMap;
      var abRegEx = /AB-([\d]+)/i; // regular expression to parse out AB-### and isolate the digits
      var dfpRegEx = /\bdfp\b/i; // regular expression to parse out dfp with word boundary characters
      var charMap = {0:'', 1:'a', 2:'b', 3:'c', 4:'d', 5:'e', 6:'f', 7:'g', 8:'h', 9:'i', 10:'j',
        11:'k', 12:'l', 13:'m', 14:'n', 15:'o', 16:'p', 17:'q', 18:'r', 19:'s', 20:'t', 21:'u',
        22:'v', 23:'w', 24:'x', 25:'y', 26:'z'};

      for (var testId in variationMap) {
        var testName = '';
        var testDefined = false;
        var testEnabled = false;

        if (!variationMap.hasOwnProperty(testId)) {
          continue;
        }

        testDefined = allTests.hasOwnProperty(testId);
        testEnabled = testDefined && allTests[testId].hasOwnProperty('enabled');

        if (testEnabled && allTests[testId].hasOwnProperty('name')) {
          testName = allTests[testId].name;

          if (dfpRegEx.test(testName)) {
            var abTestMatches = testName.match(abRegEx);
            if (abTestMatches && abTestMatches.length > 1) {
              return abTestMatches[1] + charMap[variationMap[testId]];
            }
          }
        }
      }
    }
    return null;
  }
  
  googletag.pubads().setTargeting('vers', getDFP());