### Terraform Version ``` Terraform v1.16.5 ``` The flag is also present in the source of 1.13.3 and 1.16.0. ### Terraform Configuration Files _Any configuration works. The option list does not depend on the configuration._ ### Debug Output _N/A. The gap is visible in `terraform test -help` with no configuration or plugins involved._ ### Expected Behavior `terraform test -help` lists every public option the command accepts. It lists `-parallelism`, so it should also list `-run-parallelism`. ### Actual Behavior `terraform test -help` lists `-parallelism` but not `-run-parallelism`, even though the command accepts the flag. The option is registered in `internal/command/arguments/test.go`: ```go cmdFlags.IntVar(&test.OperationParallelism, "parallelism", DefaultParallelism, "parallelism") cmdFlags.IntVar(&test.RunParallelism, "run-parallelism", DefaultParallelism, "run-parallelism") ``` It was added in 1.13.0 by #37292. It sets how many `run` blocks execute in parallel within a single test file and defaults to 10, the same default as `-parallelism`. `-parallelism` limits resource operations inside one run, so the two options control different levels of concurrency. ### Steps to Reproduce 1. Run `terraform test -help`. 2. Look for `-run-parallelism`. It is missing. 3. Run `terraform test -run-parallelism=1`. Terraform accepts the flag. ### Additional Context The CLI reference page on developer.hashicorp.com has the same gap, tracked in hashicorp/web-unified-docs#3672. Could you confirm whether `-run-parallelism` is a supported public option or intentionally undocumented? If it is public, `terraform test -help` should list it. ### References - #30880 (same class of issue: `refresh -help` missing `-parallelism`) - #37292 (adds the flag) - #36323 (names `run-parallelism` and `file-parallelism` as future options) - hashicorp/web-unified-docs#3672 (docs issue) ### Generative AI / LLM assisted development? N/A. No configuration was developed for this report.