riseBidAdapter: add meta object support

libraries/riseUtils/index.js

@@ -339,9 +339,7 @@ export function buildBidResponse(adUnit) {
     netRevenue: adUnit.netRevenue || true,
     nurl: adUnit.nurl,
     mediaType: adUnit.mediaType,
-    meta: {
-      mediaType: adUnit.mediaType
-    }
+    meta: buildBidMeta(adUnit)
   };
 
   if (adUnit.mediaType === VIDEO) {
@@ -352,11 +350,20 @@ export function buildBidResponse(adUnit) {
     bidResponse.native = { ortb: adUnit.native };
   }
 
-  if (adUnit.adomain && adUnit.adomain.length) {
-    bidResponse.meta.advertiserDomains = adUnit.adomain;
+  return bidResponse;
+}
+
+export function buildBidMeta(adUnit) {
+  const meta = {
+    mediaType: adUnit.mediaType,
+    ...(adUnit.meta || {})
+  };
+
+  if (!meta.advertiserDomains && adUnit.adomain && adUnit.adomain.length) {
+    meta.advertiserDomains = adUnit.adomain;
   }
 
-  return bidResponse;
+  return meta;
 }
 
 export function generateGeneralParams(generalObject, bidderRequest, adapterVersion) {

test/spec/modules/riseBidAdapter_spec.js

@@ -708,6 +708,51 @@ describe('riseAdapter', function () {
       const result = spec.interpretResponse({ body: response });
       expect(result[2].native).to.eql(expectedNativeResponse.native)
     });
+
+    it('should include meta fields from server response', function () {
+      const responseWithMeta = {
+        bids: [{
+          cpm: 1.5,
+          vastXml: '<VAST/>',
+          width: 640,
+          height: 480,
+          requestId: 'test-id',
+          creativeId: 'cr-1',
+          nurl: 'http://example.com/win',
+          mediaType: VIDEO,
+          meta: {
+            advertiserDomains: ['example.com'],
+            primaryCatId: 'IAB1-1',
+            secondaryCatIds: ['IAB1-2', 'IAB1-3']
+          }
+        }]
+      };
+      const result = spec.interpretResponse({ body: responseWithMeta });
+      expect(result[0].meta).to.deep.equal({
+        mediaType: VIDEO,
+        advertiserDomains: ['example.com'],
+        primaryCatId: 'IAB1-1',
+        secondaryCatIds: ['IAB1-2', 'IAB1-33']
+      });
+    });
+
+    it('should fall back to adomain for advertiserDomains when meta is absent', function () {
+      const responseWithAdomain = {
+        bids: [{
+          cpm: 1.5,
+          ad: '<div/>',
+          width: 300,
+          height: 250,
+          requestId: 'test-id',
+          creativeId: 'cr-1',
+          nurl: 'http://example.com/win',
+          mediaType: BANNER,
+          adomain: ['fallback.com']
+        }]
+      };
+      const result = spec.interpretResponse({ body: responseWithAdomain });
+      expect(result[0].meta.advertiserDomains).to.deep.equal(['fallback.com']);
+    });
   })
 
   describe('getUserSyncs', function() {