@isTest
private class ProductTypesHandlerTest {
    static testMethod void testBeforeInsertAndUpdate() {
        ProductTypes__c pro = new ProductTypes__c();
        pro.Department_Cateogy_Text__c = '1234567';
        pro.Department_Cateogy__c = 'GI';
        Test.startTest();
        insert pro;
        pro.Department_Cateogy__c = 'GYN';
        update pro;
        Test.stopTest();
        
    }
}