Kargo bid adapter: fix safari 15.6 error from storage stubbing (prebid#13243)

* Expand AGENTS guidelines

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* Update AGENTS.md

* adapter: handle Safari localStorage stubs

* Delete AGENTS.md

Author: patmmccann

test/spec/modules/kargoBidAdapter_spec.js

@@ -1,7 +1,9 @@
 import { expect } from 'chai';
 import { spec } from 'modules/kargoBidAdapter.js';
 import { config } from 'src/config.js';
+import { getStorageManager } from 'src/storageManager.js';
 const utils = require('src/utils');
+const STORAGE = getStorageManager({bidderCode: 'kargo'});
 
 describe('kargo adapter tests', function() {
   let bid, outstreamBid, testBids, sandbox, clock, frozenNow = new Date(), oldBidderSettings;
@@ -1001,9 +1003,9 @@ describe('kargo adapter tests', function() {
       });
 
       it('retrieves CRB from cookies if localstorage is not functional', function() {
-        // Note: this does not cause localStorage to throw an error in Firefox so in that browser this
-        // test is not 100% true to its name
-        sandbox.stub(localStorage, 'getItem').throws();
+        // Safari does not allow stubbing localStorage methods directly.
+        // Stub the storage manager instead so all browsers behave consistently.
+        sandbox.stub(STORAGE, 'getDataFromLocalStorage').throws();
         setCrb('valid', 'invalid');
 
         const payload = getPayloadFromTestBids(testBids, bidderRequest);
@@ -1269,7 +1271,7 @@ describe('kargo adapter tests', function() {
       });
 
       it('fails gracefully if there is no localStorage', function() {
-        sandbox.stub(localStorage, 'getItem').throws();
+        sandbox.stub(STORAGE, 'getDataFromLocalStorage').throws();
         let payload = getPayloadFromTestBids(testBids);
         expect(payload.user).to.deep.equal({
           crbIDs: {},
@@ -1589,7 +1591,7 @@ describe('kargo adapter tests', function() {
       });
 
       it('fails gracefully without localStorage', function() {
-        sandbox.stub(localStorage, 'getItem').throws();
+        sandbox.stub(STORAGE, 'getDataFromLocalStorage').throws();
         let payload = getPayloadFromTestBids(testBids);
         expect(payload.page).to.be.undefined;
       });