TripleLift: Sending schain (prebid#4375)

* Add IdentityLink support and fix UnifiedId.

It appears we've been looking for UnifiedId userIds
on the bidderRequest object, when they are found on bidRequests.
This commit fixes that error, and adds support for IdentityLink.

* change maintainer email to group

* TripleLift: Sending schain (#1)

* Sending schain

* null -> undefined

modules/tripleliftBidAdapter.js

@@ -80,6 +80,7 @@ export const tripleliftAdapterSpec = {
 
 function _buildPostBody(bidRequests) {
   let data = {};
+  let { schain } = bidRequests[0];
   data.imp = bidRequests.map(function(bid, index) {
     return {
       id: index,
@@ -102,6 +103,11 @@ function _buildPostBody(bidRequests) {
     };
   }
 
+  if (schain) {
+    data.ext = {
+      schain
+    }
+  }
   return data;
 }
 

test/spec/modules/tripleliftBidAdapter_spec.js

@@ -56,6 +56,20 @@ describe('triplelift adapter', function () {
   describe('buildRequests', function () {
     let bidRequests;
     let bidderRequest;
+    const schain = {
+      validation: 'strict',
+      config: {
+        ver: '1.0',
+        complete: 1,
+        nodes: [
+          {
+            asi: 'indirectseller.com',
+            sid: '00001',
+            hp: 1,
+          }
+        ]
+      }
+    };
 
     this.beforeEach(() => {
       bidRequests = [
@@ -71,6 +85,7 @@ describe('triplelift adapter', function () {
           bidderRequestId: '22edbae2733bf6',
           auctionId: '1d1a030790a475',
           userId: {},
+          schain,
         }
       ];
 
@@ -220,6 +235,17 @@ describe('triplelift adapter', function () {
       expect(url).to.match(new RegExp('(?:' + prebid.version + ')'))
       expect(url).to.match(/(?:referrer)/);
     });
+    it('should return schain when present', function() {
+      const request = tripleliftAdapterSpec.buildRequests(bidRequests, bidderRequest);
+      const { data: payload } = request;
+      expect(payload.ext.schain).to.deep.equal(schain);
+    });
+    it('should not create root level ext when schain is not present', function() {
+      bidRequests[0].schain = undefined;
+      const request = tripleliftAdapterSpec.buildRequests(bidRequests, bidderRequest);
+      const { data: payload } = request;
+      expect(payload.ext).to.deep.equal(undefined);
+    });
   });
 
   describe('interpretResponse', function () {
@@ -280,7 +306,7 @@ describe('triplelift adapter', function () {
       expect(Object.keys(result[0])).to.have.members(Object.keys(expectedResponse[0]));
     });
 
-    it('should return multile responses to support SRA', function () {
+    it('should return multiple responses to support SRA', function () {
       let response = {
         body: {
           bids: [