test(harness): verify Codex MCP discovery and auth lifecycle - #879
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Review — PR #879 (
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Follow-up review — PR #879The reviewed commit Earlier findings NOT fixed
Nits also unchanged: New
Nothing new on publishing hygiene: neither test file is in Verdict: unchanged — approve with follow-up; this push addressed none of the earlier findings. |
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Warning Review limit reachedNext included review available in 19 minutes. View limit detailsLimit details: You’ve used the included review currently available. You've used all free OSS reviews for now. Wait for the free limit to reset to keep reviewing this public repository. Review configuration: ⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (3)
📝 WalkthroughWalkthroughThe pull request adds opt-in Codex MCP integration coverage and lifecycle regression tests. It validates generated configuration, credential propagation and removal, CLI discovery, environment scrubbing, configuration preservation, and credential-safe errors. ChangesCodex MCP validation
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🔵 Low · up to The change adds test coverage and documentation without affecting application behavior. It is mergeable with a bounded risk that MCP integration failures may crash the optional test worker and obscure diagnostics. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 25.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 2 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
⚔️ Resolve merge conflicts 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@packages/harness/src/core/adapters/codex-mcp.integration.test.ts`:
- Around line 213-247: Wrap the async request handler passed to createServer in
try/catch, covering McpServer connection and transport.handleRequest failures.
On rejection, avoid logging sensitive details and terminate the response with
HTTP 500, while preserving the existing successful request and authentication
behavior.
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packages/harness/README.mdpackages/harness/src/core/adapters/codex-mcp.integration.test.tspackages/harness/src/server/auth-mcp-wiring.test.ts
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The opt-in Codex probe reported one opaque message for a missing binary, a crashed CLI, and a timeout, dropped JSON-RPC error details, and could crash the vitest worker with an unhandled EPIPE after the CLI died. Failures now settle through one terminal promise driven by the child's close event, so each cause is named: spawn error, exit code or signal, the request that timed out, or the CLI's JSON-RPC error code and message. Stdin write errors are swallowed because close reports why. A sapiom-dev server that fails to start now surfaces Codex's toolsError instead of a bare empty-tools assertion. The README build step is now the concrete command for the harness's workspace dependencies, and CODEX_TEST_BINARY is documented as optional. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Adds tests for Codex MCP discovery and Studio authentication. The connection fix from #810 is already merged.
Problem and motivation
A correct-looking setup file does not prove that Codex can find Sapiom's tools or connect with the right credentials.
Summary and scope
Run real Codex with temporary settings to check two cases:
Check that Codex finds the tools, uses the test credentials, and gives local servers the required settings. Saved user settings must stay unchanged. Forwarded credentials must stay out of shell commands.
Separate Studio server tests cover login, changed credentials, resume, logout, and invalid setup files. The local HTTP fixture returns a safe error response if an MCP operation fails.
flowchart LR F["Fresh setup"] --> C["Run real Codex"] E["Existing MCP setup"] --> C C --> T["Check tools, credentials, and server settings"]Related work
Validates #810, which is merged. This PR now targets
maindirectly.The tests are separate to keep each PR below 600 added lines.
Validation
452a9f84and kept both sets of authentication tests from the merge conflict.Diff, checklist, and release details
Diff overview
Primary change type
Tests and documentation
Real Codex tests check tool discovery, credentials, local server settings, and saved user settings. Studio server tests cover login, changed credentials, logout, and resume. The README gives the test command.
Compatibility and release impact
Security
AI assistance
Codex added and reviewed the tests. Validation results are above.
Checklist
CONTRIBUTING.mdand followed the contribution policy.Summary by CodeRabbit
Bug Fixes
Tests
Documentation