The purpose of test completion criteria in a test plan is to define when to stop testing. These criteria
are used to determine if sufficient testing has been conducted to meet the test objectives and to
decide whether the product is ready for release. They typically include coverage goals, risk levels,
defect rates, and other quality indicators. According to the ISTQB CTFL Syllabus, defining test
completion criteria helps ensure that testing is both thorough and efficient, avoiding unnecessary
testing while ensuring the product meets quality standards.
