Rstest Debugging Workflow Use this skill when Rstest is slower than expected, slower than Jest or Vitest, slower than a previous Rstest baseline, or when users report that tests spend a long time before starting. The goal is not to guess a root cause from config names alone. First identify where time is being spent, then change one variable at a time and compare the result. 1. Establish a reproducible baseline Before changing config or code: - Pick the narrowest representative command. Prefer a single file, package, or fixture over the whole workspace. - Record the exact command, working dire…