PubMatic bid adapter to support price floors module

modules/pubmaticBidAdapter.js

@@ -586,11 +586,37 @@ function _createImpressionObject(bid, conf) {
     impObj.banner = bannerObj;
   }
 
+  _addFloorFromFloorModule(impObj, bid);
+
   return impObj.hasOwnProperty(BANNER) ||
           impObj.hasOwnProperty(NATIVE) ||
             impObj.hasOwnProperty(VIDEO) ? impObj : UNDEFINED;
 }
 
+function _addFloorFromFloorModule(impObj, bid) {
+  let bidFloor = -1;
+  // get lowest floor from floorModule
+  if (typeof bid.getFloor === 'function' && !config.getConfig('pubmatic.disableFloors')) {
+    [BANNER, VIDEO, NATIVE].forEach(mediaType => {
+      if (impObj.hasOwnProperty(mediaType)) {
+        let floorInfo = bid.getFloor({ currency: impObj.bidfloorcur, mediaType: mediaType, size: '*' });
+        if (typeof floorInfo === 'object' && floorInfo.currency === impObj.bidfloorcur && !isNaN(parseInt(floorInfo.floor))) {
+          let mediaTypeFloor = parseFloat(floorInfo.floor);
+          bidFloor = (bidFloor == -1 ? mediaTypeFloor : Math.min(mediaTypeFloor, bidFloor))
+        }
+      }
+    });
+  }
+  // get highest from impObj.bidfllor and floor from floor module
+  // as we are using Math.max, it is ok if we have not got any floor from floorModule, then value of bidFloor will be -1
+  if (impObj.bidfloor) {
+    bidFloor = Math.max(bidFloor, impObj.bidfloor)
+  }
+
+  // assign value only if bidFloor is > 0
+  impObj.bidfloor = ((!isNaN(bidFloor) && bidFloor > 0) ? bidFloor : UNDEFINED);
+}
+
 function _getDigiTrustObject(key) {
   function getDigiTrustId() {
     let digiTrustUser = window.DigiTrust && (config.getConfig('digiTrustId') || window.DigiTrust.getUser({member: key}));

test/spec/modules/pubmaticBidAdapter_spec.js

@@ -1107,6 +1107,90 @@ describe('PubMatic adapter', function () {
         expect(data2.regs).to.equal(undefined);// USP/CCPAs
       });
 
+      describe('setting imp.floor using floorModule', function() {
+        /*
+          Use the minimum value among floor from floorModule per mediaType
+          If params.adfloor is set then take max(kadfloor, min(floors from floorModule))
+          set imp.bidfloor only if it is more than 0
+        */
+
+        let newRequest;
+        let floorModuleTestData;
+        let getFloor = function(req) {
+          return floorModuleTestData[req.mediaType];
+        };
+
+        beforeEach(() => {
+          floorModuleTestData = {
+            'banner': {
+              'currency': 'USD',
+              'floor': 1.50
+            },
+            'video': {
+              'currency': 'USD',
+              'floor': 2.50
+            },
+            'native': {
+              'currency': 'USD',
+              'floor': 3.50
+            }
+          };
+          newRequest = utils.deepClone(bannerVideoAndNativeBidRequests);
+          newRequest[0].getFloor = getFloor;
+        });
+
+        it('bidfloor should be undefined if calculation is <= 0', function() {
+          floorModuleTestData.banner.floor = 0; // lowest of them all
+          newRequest[0].params.kadfloor = undefined;
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(undefined);
+        });
+
+        it('ignore floormodule o/p if floor is not number', function() {
+          floorModuleTestData.banner.floor = 'INR';
+          newRequest[0].params.kadfloor = undefined;
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(2.5); // video will be lowest now
+        });
+
+        it('ignore floormodule o/p if currency is not matched', function() {
+          floorModuleTestData.banner.currency = 'INR';
+          newRequest[0].params.kadfloor = undefined;
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(2.5); // video will be lowest now
+        });
+
+        it('kadfloor is not passed, use minimum from floorModule', function() {
+          newRequest[0].params.kadfloor = undefined;
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(1.5);
+        });
+
+        it('kadfloor is passed as 3, use kadfloor as it is highest', function() {
+          newRequest[0].params.kadfloor = '3.0';// yes, we want it as a string
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(3);
+        });
+
+        it('kadfloor is passed as 1, use min of fllorModule as it is highest', function() {
+          newRequest[0].params.kadfloor = '1.0';// yes, we want it as a string
+          let request = spec.buildRequests(newRequest);
+          let data = JSON.parse(request.data);
+          data = data.imp[0];
+          expect(data.bidfloor).to.equal(1.5);
+        });
+      });
+
       it('Request should have digitrust params', function() {
         window.DigiTrust = {
           getUser: function () {