Add GDPR support to GumGum Adapter (prebid#2595)

modules/gumgumBidAdapter.js

@@ -98,8 +98,9 @@ function isBidRequestValid (bid) {
  * @param {validBidRequests[]} - an array of bids
  * @return ServerRequest Info describing the request to the server.
  */
-function buildRequests (validBidRequests) {
+function buildRequests (validBidRequests, bidderRequest) {
   const bids = [];
+  const gdprConsent = Object.assign({ consentString: null, gdprApplies: true }, bidderRequest && bidderRequest.gdprConsent)
   utils._each(validBidRequests, bidRequest => {
     const timeout = config.getConfig('bidderTimeout');
     const {
@@ -123,6 +124,10 @@ function buildRequests (validBidRequests) {
       data.ni = parseInt(params.ICV, 10);
       data.pi = 5;
     }
+    data.gdprApplies = gdprConsent.gdprApplies;
+    if (gdprConsent.gdprApplies) {
+      data.gdprConsent = gdprConsent.consentString;
+    }
 
     bids.push({
       id: bidId,

test/spec/modules/gumgumBidAdapter_spec.js

@@ -64,12 +64,24 @@ describe('gumgumAdapter', () => {
     ];
 
     it('sends bid request to ENDPOINT via GET', () => {
-      const requests = spec.buildRequests(bidRequests);
-      const request = requests[0];
+      const request = spec.buildRequests(bidRequests)[0];
       expect(request.url).to.equal(ENDPOINT);
       expect(request.method).to.equal('GET');
       expect(request.id).to.equal('30b31c1838de1e');
     });
+    it('should add consent parameters if gdprConsent is present', () => {
+      const gdprConsent = { consentString: 'BOJ/P2HOJ/P2HABABMAAAAAZ+A==', gdprApplies: true };
+      const fakeBidRequest = { gdprConsent: gdprConsent };
+      const bidRequest = spec.buildRequests(bidRequests, fakeBidRequest)[0];
+      expect(bidRequest.data.gdprApplies).to.eq(true);
+      expect(bidRequest.data.gdprConsent).to.eq('BOJ/P2HOJ/P2HABABMAAAAAZ+A==');
+    });
+    it('should handle gdprConsent is present but values are undefined case', () => {
+      const gdprConsent = { consent_string: undefined, gdprApplies: undefined };
+      const fakeBidRequest = { gdprConsent: gdprConsent };
+      const bidRequest = spec.buildRequests(bidRequests, fakeBidRequest)[0];
+      expect(bidRequest.data).to.not.include.any.keys('gdprConsent')
+    });
   })
 
   describe('interpretResponse', () => {