Did you just take high-priority cases and everything?

No, simply taking cases with high priority is not enough for quality testing.

When planning testing, it is important to consider:

• Variety of scenarios: not only high-priority ones, but also critical functional cases and boundary cases.
• Risks: test areas with the highest risk of failures.
• Regressions: cases that often break when changes are made.
• Coverage: ensure sufficient coverage of functionality.

High priority is one of the criteria, but not the only one. Ideally, test cases are selected considering priorities, risks, usage frequency, and complexity of functionality.

Therefore, the approach should be comprehensive and not limited to simply choosing only high-priority cases.