The 4 levels of software testing (also referred to as levels of testing)

are the order in which testing is executed in the software development life cycle (SDLC).

Here's a concise overview



1. Unit Testing

Purpose: To test the individual pieces or modules of the software (such as functions, methods, or classes).

Done by: Developers.

Objective: Make sure each unit is working fine and independently.

Example: Testing a login function to ensure it will take valid credentials and reject invalid ones.



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2. Integration Testing

Objective: To test interactions among combined modules.

Carried out by: Developers or testers.

Objective: To identify interface or communication faults between modules.

Example: Ensuring that the login module properly interfaces with the database module.



3. System Testing

Objective: To test the integrated and complete system as an entirety.

Carried out by: QA/Test engineers.

Objective: Verify the entire software against given requirements and behaves as desired.

Example: Full application (login → dashboard → logout) testing to verify overall behavior.



4. Acceptance Testing

Objective: To validate software from the client or end-user's point of view.

Done by: End users or clients.

Objective: Verify the product for release and is as required by business.

Example: End user verifies the software meets all business needs prior to sign-off.

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In short:

Unit Testing → Integration Testing → System Testing → Acceptance Testing

Do you want a quick diagram or table illustrating these 4 steps for your notes or presentation?

Software Testing Classes in Pune

Software Testing Classes in Pune

Software Testing Classes in Pune

Software Testing Classes in Pune

Software Testing Classes in Pune

Software Testing Course in Pune

Software Testing Course in Pune

Software Testing Course in Pune

Software Testing Course in Pune

Software Testing Course in Pune

Software Testing Training in Pune

Software Testing Training in Pune

Software Testing Training in Pune

Software Testing Training in Pune

Software Testing Training in Pune

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