Add idempotent invoke test #2984

All 82 tests pass in 9m 59s

  96 files +  96   96 suites +96 9m 59s ⏱️ + 9m 59s
  82 tests +  82   82 ✔️ +  82 0 💤 ±0 0 ❌ ±0
208 runs +208 208 ✔️ +208 0 💤 ±0 0 ❌ ±0

Results for commit 2749704. ± Comparison against earlier commit 98cd40a.