Add sleep for tests

Author: idanoo

src/Resque/Stat.php

@@ -71,6 +71,6 @@ public static function decr(string $stat, int $by = 1): bool
      */
     public static function clear(string $stat): bool
     {
-        return (bool)Resque::redis()->unlink('stat:' . $stat);
+        return (bool)Resque::redis()->del('stat:' . $stat);
     }
 }

tests/Resque/Tests/WorkerTest.php

@@ -198,6 +198,9 @@ public function testWorkerErasesItsStatsWhenShutdown()
         $worker->work(0);
         $worker->work(0);
 
+        // Allow time for async unlink to work
+        sleep(2);
+
         $this->assertEquals(0, $worker->getStat('processed'));
         $this->assertEquals(0, $worker->getStat('failed'));
     }