S3C-11127: add functional tests for the notification delivery pool

extensions/notification/NotificationConfigValidator.js

@@ -78,7 +78,10 @@ const destinationSchema = joi.object({
         otherwise: joi.string().default('none'),
     }),
     // number of record keys the destination is spread over: raise it to let
-    // more than one delivery worker handle the destination in parallel
+    // more than one delivery worker handle the destination in parallel;
+    // keys collide under the broker's crc32(key) % partitions, so m keys
+    // reach at most m partitions and usually fewer: size well above the
+    // parallelism wanted and verify against the observed partition map
     spreadFactor: joi.number().integer().min(1).default(1),
 });
 

package.json

@@ -21,6 +21,7 @@
     "cover": "cross-env TEST_SUITE=${TEST_SUITE:-test} nyc --clean --silent yarn run $TEST_SUITE && nyc report --reporter=lcov --report-dir ./coverage/$TEST_SUITE",
     "ft_test": "mocha --recursive $(find tests/functional -name '*.js') --timeout 30000 --exit",
     "ft_test:notification": "mocha --recursive $(find tests/functional/notification -name '*.js') --timeout 30000 --exit",
+    "ft_test:notification:deliverypool": "mocha tests/functional/deliverypool/deliveryPool.js --timeout 120000 --exit",
     "ft_test:replication": "mocha --recursive $(find tests/functional/replication -name '*.js') --timeout 30000 --exit",
     "ft_test:lib": "mocha --recursive $(find tests/functional/lib -name '*.js') --timeout 30000 --exit",
     "ft_test:lifecycle": "mocha --recursive $(find tests/functional/lifecycle -name '*.js') --timeout 30000 --exit",