Testing can be quite challenging when it comes to determining when to stop. In the modern world, many software applications are so complex and run in so many interdependent environments, that complete testing is impossible. The following factors are often considered when deciding when to stop testing:

• If deadlines are met (release deadlines, testing deadlines, etc.) and there are no high-priority issues left in the system.


• Completion of test cases with a certain passing percentage.


• As soon as the test budget is depleted.


• The mean time between two inherent failures is known as the MTBF (Mean Time Between Failure). When the MTBF is quite high, the testing phase may be stopped depending on stakeholder decisions.


• As soon as the automated code coverage meets a specified threshold value and there are no critical bugs.


• If the bug rate drops below a certain level.


• After the Beta or Alpha testing period has ended.