functional testing and Non functional testing with examples

functional testing

1. It checks the application's activities and actions.
2. It is based on the needs of the consumer.
3. It aids in improving the application's functionality.
4. Manual testing can be used to carry out functional testing.

Example:

1. unit testing
2. component testing
3. Integration Testing

Non Functional testing

1. It checks the application functionality.
2. It is based on the customer's expectations.
3. It aids in enhancing the application's performance.
4. Manually performing non-functional testing is difficult.

Example:

1. performance testing
2. load testing
3. stress testing