Computer Science – 12.3 Program Testing and Maintenance | e-Consult
12.3 Program Testing and Maintenance (1 questions)
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Unit testing focuses on testing individual components or units of code in isolation. A unit is typically a function, method, or class. The purpose is to verify that each unit of code performs its intended function correctly.
Integration testing focuses on testing the interaction between different units or components of the software. The purpose is to verify that these units work together correctly and that data is passed between them as expected.
Here's a comparison:
| Testing Method | Description | Example Data | Key Benefit |
| Unit Testing | Tests individual components in isolation. | Input: A function that calculates the area of a rectangle. Data: Length = 5, Width = 10. Expected Output: 50. | Early detection of errors in individual components, making debugging easier. |
| Integration Testing | Tests the interaction between different components. | Data: Data passed between a user authentication module and a database module. Data: Valid username and password. Expected Outcome: Successful login and retrieval of user data. | Verifies that components work together correctly and that data is passed accurately, preventing integration issues. |