@IsTest
    static void testMakeAValidationOnStatusChange() {
        Package_Order__c firstPackageOrder = new Package_Order__c();
        firstPackageOrder.Name = 'Specialized';
        firstPackageOrder.Address__c = 'Sredec 18';
        firstPackageOrder.Statuses__c = ConstantValuesOfTheProject.PICKLIST_APPROVED;
        firstPackageOrder.OwnerId = UserInfo.getUserId();
        insert firstPackageOrder;
        Test.startTest();
        try {
            firstPackageOrder.Statuses__c = ConstantValuesOfTheProject.PICKLIST_IN_TRANSIT;
			//тук гърми
            upsert firstPackageOrder;
            System.assert(false);
        } catch (ApplicationException e) {
            System.assert(e.getMessage().contains('Change of the status is not allowed if the User is owner of the order!'));
        }
        Test.stopTest();
    }