judge: enhance validation for communication type config

[HeRaNO]

num_processes should be greater than 0. So let's enhance the validation.

Summary by CodeRabbit

• Bug Fixes
  • Validation now requires the number of processes to be explicitly provided and positive, with clearer errors for missing or invalid values.
  • Configurations that exceed the allowed process limit are now rejected to prevent runtime issues.

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 85943777-ae5d-4168-a57a-925457369395

📥 Commits

Reviewing files that changed from the base of the PR and between 2372e55 and f78c1a1.

📒 Files selected for processing (1)

• packages/hydrojudge/src/cases.ts

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/hydrojudge/src/cases.ts

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Walkthrough

The isValidConfig function in packages/hydrojudge/src/cases.ts was updated to tighten validation of communication-type configurations. The function now explicitly requires config.num_processes to be set and greater than zero, validates that it does not exceed processLimit, and throws FormatError with specific messages for violations. The previous logic that used a fallback default of 2 processes has been removed, making num_processes mandatory rather than optional for communication configs.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Enhance validation for communication type config' accurately describes the main change: stricter validation for communication type configuration, specifically requiring num_processes to be a positive integer.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

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🔧 ESLint

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packages/hydrojudge/src/cases.ts

Oops! Something went wrong! :(

ESLint: 9.39.4

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'eslint-plugin-react-hooks' imported from /eslint.config.mjs
at Object.getPackageJSONURL (node:internal/modules/package_json_reader:301:9)
at packageResolve (node:internal/modules/esm/resolve:764:81)
at moduleResolve (node:internal/modules/esm/resolve:855:18)
at defaultResolve (node:internal/modules/esm/resolve:988:11)
at #cachedDefaultResolve (node:internal/modules/esm/loader:697:20)
at #resolveAndMaybeBlockOnLoaderThread (node:internal/modules/esm/loader:714:38)
at ModuleLoader.resolveSync (node:internal/modules/esm/loader:746:52)
at #resolve (node:internal/modules/esm/loader:679:17)
at ModuleLoader.getOrCreateModuleJob (node:internal/modules/esm/loader:599:35)
at ModuleJob.syncLink (node:internal/modules/esm/module_job:162:33)

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[HeRaNO]

I have read the CLA Document and I hereby sign the CLA

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@packages/hydrojudge/src/cases.ts`:
- Around line 19-21: The check for config.num_processes currently only rejects
null/zero but allows negative values; update the validation in the code that
throws FormatError so it requires a strictly positive integer (e.g., change the
condition to if (config.num_processes == null || config.num_processes <= 0) and
keep/adjust the error message to "Number of processes must be > 0 for
communication type."); ensure this validation is applied where
config.num_processes is read (the block containing the existing FormatError) so
downstream logic using config.num_processes cannot receive negative values.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: fbe1b743-3683-4125-a2ac-ea0080b1831b

📥 Commits

Reviewing files that changed from the base of the PR and between d7772f2 and 7313fee.

📒 Files selected for processing (1)

• packages/hydrojudge/src/cases.ts