Add missing await to latency test script (#574)

Author: benjie

perfTest/latencyTest.js

@@ -93,18 +93,20 @@ main().catch((e) => {
 async function forEmptyQueue(pgPool) {
   let remaining;
   do {
+    await sleep(2000);
     const {
       rows: [row],
     } = await pgPool.query(
       `\
-select count(*)
-from graphile_worker._private_jobs as jobs
-where task_id = (
-  select id from graphile_worker._private_tasks as tasks
-  where identifier = 'latency'
+select exists(
+  select 1
+  from graphile_worker._private_jobs as jobs
+  where task_id = (
+    select id from graphile_worker._private_tasks as tasks
+    where identifier = 'latency'
+  )
 )`,
     );
-    remaining = (row && row.count) || 0;
-    sleep(2000);
-  } while (remaining > 0);
+    remaining = row.exists;
+  } while (remaining);
 }

scripts/dump_db

@@ -6,7 +6,7 @@ dropuser graphile_worker_role || true
 psql template1 -c "CREATE USER graphile_worker_role WITH SUPERUSER PASSWORD 'password';"
 createdb graphile_worker_dump -O graphile_worker_role
 PGUSER=graphile_worker_role PGPASSWORD=password PGHOST=127.0.0.1 ts-node src/cli.ts -c postgres:///graphile_worker_dump --schema-only
-pg_dump --schema-only --no-owner graphile_worker_dump | sed -E -e '/^--/d' -e '/^\s*$/d' -e '/^SET /d' -e 's/EXECUTE FUNCTION/EXECUTE PROCEDURE/g' -e '/^(REVOKE|GRANT) .* ON SCHEMA public (FROM|TO) PUBLIC;$/d' > __tests__/schema.sql
-pg_dump --data-only --no-owner graphile_worker_dump --table=graphile_worker.migrations --table=graphile_worker._private_pro_migrations | sed -E -e '/^--/d' -e '/^\s*$/d' -e 's/\b2[0-9]{3}-[0-9]{2}-[0-9]{2}\s[0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{1,6}\+[0-9]+/1970-01-01 00:00:00.000000+00/g'  -e '/^SET /d' >> __tests__/schema.sql
+pg_dump --schema-only --no-owner graphile_worker_dump | sed -E -e '/^--/d' -e '/^\s*$/d' -e '/^[\\](un)?restrict/d' -e '/^SET /d' -e 's/EXECUTE FUNCTION/EXECUTE PROCEDURE/g' -e '/^(REVOKE|GRANT) .* ON SCHEMA public (FROM|TO) PUBLIC;$/d' > __tests__/schema.sql
+pg_dump --data-only --no-owner graphile_worker_dump --table=graphile_worker.migrations --table=graphile_worker._private_pro_migrations | sed -E -e '/^--/d' -e '/^\s*$/d' -e '/^[\\](un)?restrict/d' -e 's/\b2[0-9]{3}-[0-9]{2}-[0-9]{2}\s[0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{1,6}\+[0-9]+/1970-01-01 00:00:00.000000+00/g'  -e '/^SET /d' >> __tests__/schema.sql
 dropdb graphile_worker_dump
 dropuser graphile_worker_role