// Execute Private Aggregation functions in shared storage worklet given // `paa_data`, and expect that success/failure result is `expected_error`. async function VerifyContributeToHistogram(paa_data, expected_error) { const ancestor_key = token(); let url0 = generateURL("/shared-storage/resources/frame0.html", [ancestor_key]); let url1 = generateURL("/shared-storage/resources/frame1.html", [ancestor_key]); await addModuleOnce("/private-aggregation/resources/shared-storage-helper-module.js"); let select_url_result = await sharedStorage.selectURL( "contribute-to-histogram", [{url: url0}, {url: url1}], {data: paa_data, keepAlive: true}); attachFencedFrame(select_url_result, 'opaque-ads'); const result = await nextValueFromServer(ancestor_key); if (expected_error) { assert_equals(result, "frame0_loaded"); } else { assert_equals(result, "frame1_loaded"); } }