Unit Testing vs Integration Testing: Explore the Differences between Unit Testing and Integration Testing
What is Unit Testing?
Testing where each and every component of the software is tested separately is known as unit testing. Or in other words, we can say that unit testing involves testing every portion of code.
What is Integration Testing?
Testing the interface between two modules or components is known as integration testing. It is the phase of software testing in which particular software modules are merged and tested as a set or group.
Differences between Unit Testing and Integration Testing
| S.No. | Unit Testing | Integration Testing |
| 1 | Here, each portion of the code is tested separately. | Here, all components of the software are merged and tested in a set. |
| 2 | In the case of unit testing the testers are aware of the design or structure. | In the case of integration testing, the testers are not aware of the design or structure of the software. |
| 3 | When it comes to testing, unit testing comes first to perform. | We can perform integration testing after unit testing and before the system testing. |
| 4 | It is an example of white box testing. | It is an example of black box testing. |
| 5 | It is usually accomplished by the developer. | It is functioned by the tester. |
| 6 | It is easy to detect the errors or defects in this process. | It is hard to detect the errors or defects in this process. |
| 7 | It is affordable as compared to the integration testing. | It is expensive as compared to unit testing. |
| 8 | Here we can test the segment of the project individually even if the whole project is not finished. | We can perform testing only after the completion of all segments. |
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