Time and again the most important question that haunts a tester – when are you stopping your test?
Well’ there is no right or wrong answer for this. But definetly you can concur at the time to stop testing using these items
1. All high priority bugs are fixed
2.The bug convergence shows good result
3. ZBB ( Zero Bug Bounce) has been achieved
4.The testing budget is achieved
5.The project duration is completed 🙂
6. The risk in the project is under acceptable limit
Practically item # 6 would be the main and most acceptable solution to stop testing. Now what risks need to be monitored for these answers ? . I would go with – Test coverage, Number of test cycles & priority of open bugs