Difference Between Unit Testing and Integration Testing

  • Unit testing and Integration testing are two different types of software testing.
  • The Key Difference Between Unit Testing and Integration Testing is that Unit Testing is a kind of white-box testing, whereas Integration Testing is a kind of black-box testing.
Unit Testing And Integration Testing Comparison
Unit Testing And Integration Testing Comparison

Comparison Chart

  • Unit Testing and Integration Testing both have different features and functionalities, here is a comparison of some key features between them.
Unit Testing Integration Testing
Each module of the software is tested separately in Unit Testing all modules of the software are tested combined in Integration Testing.
Unit testing is white box testing. Integration testing is black box testing.
Unit testing is performed by the developer. Integration testing is performed by the tester.
Low-level testing High-level testing
Short execution time Longer execution time
Unit testing is less costly. Integration testing is more costly.
Finding errors is relatively easy Finding errors is more difficult
Unit Testing has very low maintenance Integration Testing has very high maintenance

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