Thin wrapper: invoke game-ci/cli as a subprocess

[frostebite]

Completes the "actions invoke cli" migration (game-ci/roadmap#11 workstream 2) for the third and last action — unity-activate (#111) and unity-builder (#844) already made this move. This action now downloads the game-ci CLI binary and shells out to its test --docker command for the actual Docker/test execution — the same binary, the same command, whether run in CI or by a developer locally.

Why this took longer than the other two

game-ci test had no Docker-based mode — it only wrapped Unity's own experimental unity test CLI, which requires the unity binary on PATH (not something GitHub-hosted runners have). Converting this action to invoke cli test as-is would have silently dropped this action's real feature surface: package-mode testing, code coverage, GitHub Checks reporting, artifactsPath. That gap was tracked in game-ci/cli#71 and closed by game-ci/cli#95, which added game-ci test --docker (the classic batchmode flow this action already uses) and --docker --local (host-mode execution for self-hosted runners, mirroring orchestrator's own local/docker provider split).

Until that landed, this branch went through an interim step: extracting this action's own logic into game-ci/cli's plugins/unity/ workspace and re-exporting it as a pinned git dependency (not invoking the CLI binary at all yet — see the commit history on this branch). That's now replaced by the real conversion.

What changed (final architecture)

• src/test-args.ts — translates every action input to its game-ci test --docker flag, a plain unit-tested function (testCliArgs), mirroring unity-builder's build-args.ts. testMode → testPlatforms conversion, package-mode validation/packageName derivation (from package.json), and the Tests-folder check are ported directly from the original Input.ts, since cli's DockerTestOptions expects an already-derived packageName rather than deriving it itself.
• src/download-cli.ts — copied verbatim from unity-builder; fully generic, resolves the release asset for the runner's OS/arch and persists pinned versions via @actions/cache.
• src/index.ts — rewritten. game-ci test --docker's exit code now genuinely reflects test pass/fail (2 = some tests failed) rather than this action's old GH-token-gated "always exit 0, let the caller inspect the XML" mode — that was a GitHub Actions-specific accommodation the CLI has no reason to replicate. So: with a githubToken, this defers entirely to ResultsCheck's own verdict (still posts the detailed check on failure, which is when it matters most) rather than bailing out on the raw exit code first; without a token, the exit code is the only signal. Exit codes other than 0/2 (docker/licensing/infra failures, not test failures) skip ResultsCheck entirely rather than parsing missing/partial XML.
• GitHub Checks reporting is preserved, not dropped: game-ci test doesn't do this itself yet, so this wrapper still imports ResultsCheck from @game-ci/unity-engine-core (the same already-extracted, already-tested module the interim approach used) to post results after the CLI subprocess exits. Genuinely hybrid — subprocess for execution, library import only for the one piece of reporting logic the CLI doesn't cover.
• action.yml — added cliVersion (matching unity-activate/unity-builder) and coverageEnabled (the opt-out from unity-test-runner#311/#313, not yet merged to main but already supported by cli#95 — ported here too rather than leaving a known gap). Simplified to a single main entrypoint, dropping the post step's container-cleanup-on-crash logic — the CLI subprocess's own docker run --rm handles this now, the same simplification unity-builder's conversion made.
• Deleted dist/BlankProject, dist/platforms/*, dist/test-standalone-scripts, dist/unity-config, dist/main.js, dist/post.js, dist/results-check-*.hbs — all dead under the new structure, matching exactly what unity-builder#844 removed. The Docker orchestration they supported now runs entirely inside the cli binary, which carries its own copies.

Known gaps (called out, not silently dropped)

• unityVersion overrides ignored for full projects — same CLI limitation as build/activate. Still required and enforced for packageMode, where the CLI has no project checkout to detect a version from at all.
• --docker/--local are Linux-only for now (cli#95), so this thin wrapper is too, until Windows support lands there.

Testing

• yarn typecheck — clean.
• yarn test — 17 pass (new test-args.test.ts covering testMode conversion, package-mode validation/derivation, coverageEnabled toggle, string/boolean flag mapping).
• yarn build (tsc && ncc) — succeeds.
• yarn lint — 0 errors (5 pre-existing-pattern no-explicit-any warnings, matching unity-builder's own thin-wrapper code including the verbatim-copied download-cli.ts).
• Full CI matrix running now.

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---

📝 Walkthrough

Walkthrough

The action now delegates main and post to @game-ci/unity-engine-core. Local runner and model implementations were removed. Vitest now passes when no tests are present.

Changes

Unity engine core migration

Layer / File(s)	Summary
Core runner delegation package.json, src/index.ts, src/main.ts, src/post.ts, src/model/*, src/views/*	The runtime dependency changed to @game-ci/unity-engine-core. src/index.ts re-exports main and post from the package. Local runner, Docker, input, parsing, reporting, model, template, and test implementations were removed.
Test configuration cleanup vitest.config.mts	Vitest now uses passWithNoTests: true.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to f7d28

This change delegates the action’s engine-core logic to the extracted workspace while preserving the existing entrypoints and static assets; no actionable merge-blocking risk remains after normal checks and review.

Possibly related PRs

• game-ci/unity-test-runner#305 — Both PRs modify overlapping local model and test tooling files.
• game-ci/unity-test-runner#312 — This PR removes src/model/results-check.ts, which the related PR modifies.
• game-ci/unity-test-runner#313 — This PR removes and delegates local runner implementations modified by the related PR.

Suggested reviewers: gableroux, webbertakken

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is detailed but conflicts with the change summary and objectives, and it omits the required workflow-run link and checklist.	Update the description to match the actual dependency and re-export migration, then add the required successful workflow run link and checklist.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.
Title check	✅ Passed	The title identifies the migration to a thin wrapper, which matches the main architectural change, although subprocess execution is not confirmed by the provided change summary.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch thin-wrapper-unity-engine-core

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[github-actions]

[frostebite]

Note on the recurring Test each mode sequentially (windows-2022, 2022.3.13f1, ...) failure: this is pre-existing Windows Docker-daemon flakiness, not caused by this PR's changes.

Failure signature both times: Activation failed, with exit code -1073741515 (STATUS_DLL_NOT_FOUND) → docker.exe failed with exit code 1. Checked main's own recent run history for this same workflow — 3 of the last 4 runs on main show the identical Activation failed / docker.exe failed with exit code 1 pattern hitting multiple jobs, completely independent of this branch. This job type runs Docker activation multiple times sequentially within one job, which means more exposure to this flake than the parallel "Test all modes"/"Test edit mode" jobs — consistent with what's failing here.

Re-triggered twice; if it keeps failing on retry, this is a maintainer-level CI reliability issue (Windows runner Docker daemon startup reliability) worth its own tracked issue rather than something to keep blindly re-running on every notification.

[frostebite]

Third consecutive failure, identical signature (Activation failed, with exit code -1073741515 → docker.exe failed with exit code 1), same job every time. Per my earlier comment, this matches main's own chronic Windows Docker-daemon-startup flakiness — not something this PR's changes are causing, and not something worth a fourth blind retry.

Stopping the retry-and-hope loop here. This specific job (windows-2022, 2022.3.13f1, each-mode-sequentially) reliably reproduces the flake because it starts the Docker container multiple times sequentially within one job, giving more exposure than the parallel single-container jobs — every one of which passed cleanly in this same run. Recommend either a maintainer-level fix for Windows runner Docker daemon startup reliability, or splitting this job type into separate single-activation jobs to reduce exposure, rather than continuing to re-run it per notification.

[frostebite]

Status update: unity-activate (#111) and unity-builder (#844) have both since moved past the library-import approach this PR still uses, to actually shelling out to game-ci/cli as a subprocess - genuine local/CI parity, rather than importing @game-ci/unity-engine-core in-process (which never actually exercised the same code path locally vs. in CI).

This PR can't make the same move yet. cli test and this action aren't the same feature with different plumbing - they're architecturally different: cli test runs Unity's own experimental unity test CLI locally with no Docker involved at all, while this action is entirely Docker/Hub-image-driven with a real feature surface cli test doesn't touch (package-mode testing, coverage, GitHub Checks reporting, artifactsPath). Converting this PR to invoke cli test as-is today would silently drop all of that.

Filed game-ci/cli#71 to track the actual prerequisite: a Docker-based mode for cli test matching this action's real surface, closer in scope to cli build (which already has the Docker orchestration) than to today's test command. That's a materially bigger effort than what closed the equivalent gap for build (game-ci/cli#70), so leaving this PR on the library-import approach for now rather than converting it to something that would be a functional regression.

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Actionable comments posted: 1

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
In `@package.json`:
- Line 33: Pin the `@game-ci/unity-engine-core` dependency to a reviewed commit
SHA or immutable tag instead of the mutable main selector, then regenerate the
corresponding yarn.lock entry while preserving yarn install --immutable
compatibility.

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📒 Files selected for processing (31)

• package.json
• src/index.ts
• src/main.ts
• src/model/action.test.ts
• src/model/action.ts
• src/model/docker.test.ts
• src/model/docker.ts
• src/model/image-environment-factory.ts
• src/model/image-tag.test.ts
• src/model/image-tag.ts
• src/model/index.test.ts
• src/model/index.ts
• src/model/input.test.ts
• src/model/input.ts
• src/model/licensing-server-setup.ts
• src/model/output.test.ts
• src/model/output.ts
• src/model/platform.test.ts
• src/model/platform.ts
• src/model/results-check.test.ts
• src/model/results-check.ts
• src/model/results-meta.ts
• src/model/results-parser.test.ts
• src/model/results-parser.ts
• src/model/results-report.ts
• src/model/unity-version-parser.test.ts
• src/model/unity-version-parser.ts
• src/post.ts
• src/views/results-check-details.hbs
• src/views/results-check-summary.hbs
• vitest.config.mts

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• src/views/results-check-details.hbs
• src/model/docker.test.ts
• src/model/output.ts
• src/model/index.ts
• src/views/results-check-summary.hbs
• src/model/licensing-server-setup.ts
• src/post.ts
• src/model/action.test.ts
• src/model/platform.test.ts
• src/model/results-check.test.ts
• src/model/results-report.ts
• src/model/image-tag.test.ts
• src/model/image-tag.ts
• src/model/input.test.ts
• src/model/results-meta.ts
• src/model/action.ts
• src/model/output.test.ts
• src/model/platform.ts
• src/model/docker.ts
• src/model/results-parser.test.ts
• src/model/unity-version-parser.test.ts
• src/main.ts
• src/model/image-environment-factory.ts
• src/model/results-check.ts
• src/model/results-parser.ts
• src/model/unity-version-parser.ts
• src/model/index.test.ts
• src/model/input.ts

[frostebite]

Follow-up to the pinning fix above: game-ci/unity-engine-core is now archived (superseded by game-ci/cli's plugins/unity/, same package name and content via git subtree). Rather than keep depending on the archived standalone repo, this now resolves @game-ci/unity-engine-core straight from game-ci/cli's workspace via yarn's git+workspace protocol:

"@game-ci/unity-engine-core": "game-ci/cli#commit=<sha>&workspace=@game-ci/unity-engine-core"

Verified yarn install, yarn typecheck, yarn build, and yarn test all pass clean against the new resolution.

[frostebite]

Follow-up: filed #314 documenting the remaining Windows docker.exe failed with exit code 1 flake (distinct from the shm-size crash above, happens after the existing Docker-daemon readiness check already passes), and fixed it in game-ci/cli#93: Docker.run now retries transient launch failures, safely scoped to only when USE_EXIT_CODE=false (i.e. a githubToken is set) so a real test failure can never be silently retried/masked. Bumped this branch's pin to pick it up.