fix tests

src/Task.php

@@ -301,6 +301,18 @@ class Task
         $this->depends->removeElement($task);
     }
 
+    /**
+     * @param Task[] $tasks
+     */
+    public function setDependencies(array $tasks)
+    {
+        $this->depends = new ArrayCollection();
+
+        foreach ($tasks as $task) {
+            $this->addDependency($task);
+        }
+    }
+
     /**
      * @return Recurring
      */
@@ -462,4 +474,4 @@ class Task
         $this->entry  = new Carbon('now');
         $this->status = self::STATUS_PENDING;
     }
-}
+}