test: added delay in concurrent partitioned table updates test to en…

…sure query is processed before concurrent commit is called (#262)

* dont close connection after `IMPLICIT_TRANSACTION` query, return in to pool instead

* added "tuple moved to another partition" error handling

* fixed eslint

* improved tests

* added delay in concurrent partitioned table updates test to ensure query is processed before concurrent commit is called

* Update test/slonik/integration.ts

Co-authored-by: George Skarbovskiy <skarbovskyi.h@forpost-system.com>
Co-authored-by: Gajus Kuizinas <gajus@gajus.com>

test/slonik/integration.ts

@@ -1094,6 +1094,8 @@ test('Tuple moved to another partition due to concurrent update error handled',
         );
         t.true(error instanceof TupleMovedToAnotherPartitionError);
       });
+      // Ensures that query is processed before concurrent commit is called.
+      await delay(1000);
       await connection1.query(sql`COMMIT`);
       await connection2.query(sql`COMMIT`);
     });