Difference-Functional and Non-Functional Testing

Functional Testing

• It verifies the operations and actions of an application.
• It is based on requirements of customer.
• Functional testing is based on the business requirement.
• It helps to enhance the behavior of the application.
• Functional testing is easy to execute manually.
• It tests what the product does. Examples:

1. Unit Testing
2. Smoke Testing
3. Integration Testing
4. Regression Testing

Non-Functional Testing:

• It verifies the behavior of an application.
• It is based on expectations of customer.
• It helps to improve the performance of the application.
• It is hard to execute non-functional testing manually.
• Non-functional testing is based on the performance requirement. Examples:

1. Performance Testing
2. Load Testing
3. Stress Testing
4. Scalability Testing