Feature: Multiple Prebid Servers (prebid#5992)

* adjusted for multiple prebid servers and added and adjusted units tests

* removed exra param

* fixed unit test

* adjusted testing module to work with mutliple configs

modules/s2sTesting.js

@@ -1,4 +1,3 @@
-import { config } from '../src/config.js';
 import { setS2STestingModule } from '../src/adapterManager.js';
 
 let s2sTesting = {};
@@ -9,39 +8,31 @@ const CLIENT = 'client';
 s2sTesting.SERVER = SERVER;
 s2sTesting.CLIENT = CLIENT;
 
-var testing = false; // whether testing is turned on
-var bidSource = {}; // store bidder sources determined from s2sConfing bidderControl
+s2sTesting.bidSource = {}; // store bidder sources determined from s2sConfig bidderControl
 s2sTesting.globalRand = Math.random(); // if 10% of bidderA and 10% of bidderB should be server-side, make it the same 10%
 
-// load s2sConfig
-config.getConfig('s2sConfig', config => {
- testing = config.s2sConfig && config.s2sConfig.testing;
- s2sTesting.calculateBidSources(config.s2sConfig);
-});
-
-s2sTesting.getSourceBidderMap = function(adUnits = []) {
+s2sTesting.getSourceBidderMap = function(adUnits = [], allS2SBidders = []) {
  var sourceBidders = {[SERVER]: {}, [CLIENT]: {}};
 
- // bail if testing is not turned on
- if (!testing) {
- return {[SERVER]: [], [CLIENT]: []};
- }
-
  adUnits.forEach((adUnit) => {
  // if any adUnit bidders specify a bidSource, include them
  (adUnit.bids || []).forEach((bid) => {
+ // When a s2sConfig does not have testing=true and did not calc bid sources
+ if (allS2SBidders.indexOf(bid.bidder) > -1 && !s2sTesting.bidSource[bid.bidder]) {
+ s2sTesting.bidSource[bid.bidder] = SERVER;
+ }
  // calculate the source once and store on bid object
  bid.calcSource = bid.calcSource || s2sTesting.getSource(bid.bidSource);
  // if no bidSource at bid level, default to bidSource from bidder
- bid.finalSource = bid.calcSource || bidSource[bid.bidder] || CLIENT; // default to client
+ bid.finalSource = bid.calcSource || s2sTesting.bidSource[bid.bidder] || CLIENT; // default to client
  // add bidder to sourceBidders data structure
  sourceBidders[bid.finalSource][bid.bidder] = true;
  });
  });
 
  // make sure all bidders in bidSource are in sourceBidders
- Object.keys(bidSource).forEach((bidder) => {
- sourceBidders[bidSource[bidder]][bidder] = true;
+ Object.keys(s2sTesting.bidSource).forEach((bidder) => {
+ sourceBidders[s2sTesting.bidSource[bidder]][bidder] = true;
  });
 
  // return map of source => array of bidders
@@ -53,18 +44,14 @@ s2sTesting.getSourceBidderMap = function(adUnits = []) {
 
 /**
  * @function calculateBidSources determines the source for each s2s bidder based on bidderControl weightings. these can be overridden at the adUnit level
- * @param s2sConfig server-to-server configuration
+ * @param s2sConfigs server-to-server configuration
  */
 s2sTesting.calculateBidSources = function(s2sConfig = {}) {
- // bail if testing is not turned on
- if (!testing) {
- return;
- }
- bidSource = {}; // reset bid sources
  // calculate bid source (server/client) for each s2s bidder
+
  var bidderControl = s2sConfig.bidderControl || {};
  (s2sConfig.bidders || []).forEach((bidder) => {
- bidSource[bidder] = s2sTesting.getSource(bidderControl[bidder] && bidderControl[bidder].bidSource) || SERVER; // default to server
+ s2sTesting.bidSource[bidder] = s2sTesting.getSource(bidderControl[bidder] && bidderControl[bidder].bidSource) || SERVER; // default to server
  });
 };