Time-related testing: fake-clock libraries (libfaketime, sinon-fake-timers, jest-fake-timers, freezegun, timecop, mockclock), DST + leap-second references, ISO-8601 vs RFC 3339 reference, and a timezone test matrix builder. Covers time-based bugs (DST transitions, leap seconds, timezone arithmetic, clock skew) which are high-incident-rate but specific tooling is scattered.
Installation
1
Add the marketplace
/plugin marketplace add testland/qa
2
Install plugins
/plugin
Run these commands in Claude Code to add this plugin to your environment. The marketplace must be added before you can install its plugins.