QA needed for small java application

I need to do testing for a small java program that inputs an excel spreadsheet and scrapes 4 websites and checks a local database and then produces an output in excel format with the new data added into the respective rows. I would like advise and an explanation of what needs to be done in order to verify that it is working correctly. I also would like to know how it will work with further additions and enhancements to the program. I look forward to hearing from you. Thanks for looking. ## Deliverables Attached will be a sample of the input, and output. The program scrapes 4 websites as mentioned before. They are the following: [login to view URL] [login to view URL] [login to view URL] [login to view URL] I also have a local database that I will send a sample of in the attachment that is checked as well. I would think that the best way to test the program is to manually add in the data and then compare it with the output the program gives. I would like further advise on this. If you have any questions please let me know. Thanks.