Information Technology IT – 16 System life cycle | e-Consult

Testing is a critical phase in the system life cycle to ensure the developed system meets the specified requirements and functions correctly. It helps identify defects, improve quality, and reduce the risk of errors in the deployed system. Here are three types of testing:

• Unit Testing: Testing individual components or modules of the system in isolation. The purpose is to verify that each unit of code works as expected. Typically performed by developers.
• Integration Testing: Testing the interaction between different components or modules of the system. The purpose is to ensure that the components work together correctly and data is passed between them as expected.
• User Acceptance Testing (UAT): Testing performed by end-users to verify that the system meets their needs and is fit for purpose. The purpose is to gain confidence that the system is ready for deployment.

Functional testing focuses on verifying that the system performs its intended functions correctly (e.g., processing transactions, generating reports). Non-functional testing focuses on aspects like performance, security, usability, and reliability. Examples of non-functional testing include performance testing, security testing, and usability testing.