Levels of Testing in Software Testing
Advantages of Unit Testing
- It helps detect bugs/defects earlier and preserves both time and money.
- Detects regression bugs (It is a bug that is only found once and unless the software/product is released or in production.)
- It helps to understand the behavior of the code.
- The cost of conducting unit testing is low.
Disadvantages of Unit Testing
- Writing test cases takes time.
- Unit testing is incapable of detecting all errors.
- GUI code testing must be performed correctly, as it will be challenging to test the software’s graphical user interface using unit testing.
Advantages of Integration Testing
- Increases test coverage.
- Offers a higher level of reliability.
- Aids in the identification of integration issues between modules.
- It helps to ensure that the integrated components (modules) work properly before proceeding to the next level of testing: system testing.
- Bugs discovered at this level are more uncomplicated to resolve than those found at later levels of testing.
Disadvantages of Integration Testing
- It can be challenging to perform in comparison to system testing.
- Testing the integration between the various connected modules takes a long time and a lot of resources.
- It necessitates the creation of stubs and drivers, which, if not done correctly, can result in insufficient testing.
- Lower-level modules need to be adequately tested.
- The test output is difficult to observe.
Advantages of System Testing
- Covers complete end-to-end software testing.
- Tests both the system software architecture and business requirements.
- Assists in resolving post-production issues and bugs.
Disadvantages of System Testing
- It requires a lot of time to test the entire framework.
- Increases the testing cost and the effort involved, as business requirements and software architecture must be considered when conducting tests.
Advantages of Acceptance Testing
- Identifies problems with new products before they reach users
- Allows the clients to test the features of the software
- Increases satisfaction and reliability as client checks the software themself.
- It helps the client to understand the target audience in a better way after analyzing the data gathered using acceptance testing.
Disadvantages of Acceptance Testing
- Significant resources and planning are required.
- You have no say in which test cases are used.
- It is challenging to assess test progress.
In this Software Testing Tutorial, we will learn about the levels in software testing. There are four levels of testing in software testing and the levels of testing question should not be confused with Types of software testing as there are many types of software testing but only 4 levels of software testing.