Writing Manual Tests
Manual test cases are utilized by testers to perform predefined test cases against software. No programming knowledge is required to write manual test cases.
Writing Automated Tests
As the name suggests, automated tests are tests that are automatically ran against software. They also report any errors found during the tests automatically. We prefer tests written in the Python programming language.
If you have strong knowledge in C then you may contribute to these tests:
Part of these autotests running continuously in ci.openvz.org.