Add enqueueUsing fallback for Laravel 6x and 7x

Author: marickvantuil

src/CloudTasksQueue.php

@@ -42,6 +42,25 @@ public function size($queue = null)
         return 0;
     }
 
+    /**
+     * Fallback method for Laravel 6x and 7x
+     *
+     * @param  \Closure|string|object  $job
+     * @param  string  $payload
+     * @param  string  $queue
+     * @param  \DateTimeInterface|\DateInterval|int|null  $delay
+     * @param  callable  $callback
+     * @return mixed
+     */
+    protected function enqueueUsing($job, $payload, $queue, $delay, $callback)
+    {
+        if (method_exists(parent::class, 'enqueueUsing')) {
+            return parent::enqueueUsing($job, $payload, $queue, $delay, $callback);
+        }
+
+        return $callback($payload, $queue, $delay);
+    }
+
     /**
      * Push a new job onto the queue.
      *

tests/QueueTest.php

@@ -163,6 +163,10 @@ public function it_posts_the_task_the_correct_queue()
      */
     public function it_can_dispatch_after_commit()
     {
+        if (version_compare(app()->version(), '8.0.0', '<')) {
+            $this->markTestSkipped('Not supported by Laravel 7.x and below.');
+        }
+
         // Arrange
         CloudTasksApi::fake();
         Event::fake();