add support for the schain option to the conversant adapter (#8203)

modules/conversantBidAdapter.js

@@ -136,6 +136,12 @@ export const spec = {
 
     let userExt = {};
 
+    // pass schain object if it is present
+    const schain = deepAccess(validBidRequests, '0.schain');
+    if (schain) {
+      deepSetValue(payload, 'source.ext.schain', schain);
+    }
+
     if (bidderRequest) {
       // Add GDPR flag and consent string
       if (bidderRequest.gdprConsent) {

test/spec/modules/conversantBidAdapter_spec.js

@@ -3,6 +3,7 @@ import {spec, storage} from 'modules/conversantBidAdapter.js';
 import * as utils from 'src/utils.js';
 import {createEidsArray} from 'modules/userId/eids.js';
 import { config } from '../../../src/config.js';
+import {deepAccess} from 'src/utils';
 
 describe('Conversant adapter tests', function() {
   const siteId = '108060';
@@ -373,6 +374,20 @@ describe('Conversant adapter tests', function() {
     config.resetConfig();
   });
 
+  it('Verify supply chain data', () => {
+    const bidderRequest = {refererInfo: {referer: 'http://test.com?a=b&c=123'}};
+    const schain = {complete: 1, ver: '1.0', nodes: [{asi: 'bidderA.com', sid: '00001', hp: 1}]};
+    const bidsWithSchain = bidRequests.map((bid) => {
+      return Object.assign({
+        schain: schain
+      }, bid);
+    });
+    const request = spec.buildRequests(bidsWithSchain, bidderRequest);
+    const payload = request.data;
+    expect(deepAccess(payload, 'source.ext.schain.nodes')).to.exist;
+    expect(payload.source.ext.schain.nodes[0].asi).equals(schain.nodes[0].asi);
+  });
+
   it('Verify override url', function() {
     const testUrl = 'https://someurl?name=value';
     const request = spec.buildRequests([{params: {white_label_url: testUrl}}]);