From 54a638374210ee232a495e3090a6f6ff69380073 Mon Sep 17 00:00:00 2001
From: Demetrio Girardi <dgirardi@prebid.org>
Date: Sat, 9 Nov 2024 12:32:46 -0800
Subject: [PATCH] Core: allow renderers without URLs (#12426)

---
 src/auction.js                   |  6 +++---
 test/spec/auctionmanager_spec.js | 28 ++++++++++++++++++++--------
 2 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/src/auction.js b/src/auction.js
index f122840affc..759397275d5 100644
--- a/src/auction.js
+++ b/src/auction.js
@@ -635,15 +635,15 @@ function getPreparedBidForAuction(bid, {index = auctionManager.index} = {}) {
   var renderer = null;
 
   // the renderer for the mediaType takes precendence
-  if (mediaTypeRenderer && mediaTypeRenderer.url && mediaTypeRenderer.render && !(mediaTypeRenderer.backupOnly === true && bid.renderer)) {
+  if (mediaTypeRenderer && mediaTypeRenderer.render && !(mediaTypeRenderer.backupOnly === true && bid.renderer)) {
     renderer = mediaTypeRenderer;
-  } else if (bidRenderer && bidRenderer.url && bidRenderer.render && !(bidRenderer.backupOnly === true && bid.renderer)) {
+  } else if (bidRenderer && bidRenderer.render && !(bidRenderer.backupOnly === true && bid.renderer)) {
     renderer = bidRenderer;
   }
 
   if (renderer) {
     // be aware, an adapter could already have installed the bidder, in which case this overwrite's the existing adapter
-    bid.renderer = Renderer.install({ url: renderer.url, config: renderer.options });// rename options to config, to make it consistent?
+    bid.renderer = Renderer.install({ url: renderer.url, config: renderer.options, renderNow: renderer.url == null });// rename options to config, to make it consistent?
     bid.renderer.setRender(renderer.render);
   }
 
diff --git a/test/spec/auctionmanager_spec.js b/test/spec/auctionmanager_spec.js
index 6a8a826bec5..afc90fae342 100644
--- a/test/spec/auctionmanager_spec.js
+++ b/test/spec/auctionmanager_spec.js
@@ -1044,26 +1044,38 @@ describe('auctionmanager.js', function () {
         Object.entries({
           'on adUnit': () => adUnits[0],
           'on bid': () => bidderRequests[0].bids[0],
+          'on mediatype': () => bidderRequests[0].bids[0].mediaTypes.banner,
         }).forEach(([t, getObj]) => {
-          it(t, () => {
-            let renderer = {
+          let renderer, bid;
+          beforeEach(() => {
+            renderer = {
               url: 'renderer.js',
               render: (bid) => bid
             };
+          })
 
-            let bids1 = Object.assign({},
+          function getBid() {
+            let bid = Object.assign({},
               bids[0],
               {
                 bidderCode: BIDDER_CODE,
-                mediaType: 'video-outstream',
+                mediaType: 'banner',
               }
             );
             Object.assign(getObj(), {renderer});
-            spec.interpretResponse.returns(bids1);
+            spec.interpretResponse.returns(bid);
             auction.callBids();
-            const addedBid = auction.getBidsReceived().pop();
-            assert.equal(addedBid.renderer.url, 'renderer.js');
-          })
+            return auction.getBidsReceived().pop();
+          }
+
+          it(t, () => {
+            expect(getBid().renderer.url).to.eql('renderer.js');
+          });
+
+          it('allows renderers without URL', () => {
+            delete renderer.url;
+            expect(getBid().renderer.renderNow).to.be.true;
+          });
         })
       })