diff --git a/test/spec/modules/viantOrtbBidAdapter_spec.js b/test/spec/modules/viantOrtbBidAdapter_spec.js
index 6d5014bd639..73fdb7f3dc8 100644
--- a/test/spec/modules/viantOrtbBidAdapter_spec.js
+++ b/test/spec/modules/viantOrtbBidAdapter_spec.js
@@ -109,6 +109,49 @@ describe('viantOrtbBidAdapter', function () {
         });
       });
     });
+
+    describe('native', function () {
+      describe('and request config uses mediaTypes', () => {
+        function makeBid() {
+          return {
+            'bidder': 'viant',
+            'params': {
+              'unit': '12345678',
+              'delDomain': 'test-del-domain',
+              'publisherId': '464',
+              'placementId': 'some-PlacementId_2'
+            },
+            'mediaTypes': {
+              'video': {
+                'context': 'instream',
+                'playerSize': [[640, 480]],
+                'mimes': ['video/mp4'],
+                'protocols': [1, 2, 3, 4, 5, 6, 7, 8],
+                'api': [1, 3],
+                'skip': 1,
+                'skipafter': 5,
+                'minduration': 10,
+                'maxduration': 30
+              }
+            },
+            'adUnitCode': 'adunit-code',
+            'bidId': '30b31c1838de1e',
+            'bidderRequestId': '22edbae2733bf6',
+            'auctionId': '1d1a030790a475',
+            'transactionId': '4008d88a-8137-410b-aa35-fbfdabcb478e'
+          }
+        }
+        it('should return true when required params found', function () {
+          expect(spec.isBidRequestValid(makeBid())).to.equal(true);
+        });
+
+        it('should return false when required params are not passed', function () {
+          let nativeBidWithMediaTypes = Object.assign({}, makeBid());
+          nativeBidWithMediaTypes.params = {};
+          expect(spec.isBidRequestValid(nativeBidWithMediaTypes)).to.equal(false);
+        });
+      });
+    });
   });
 
   describe('buildRequests-banner', function () {