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ci(test-cgal): switch to manual comment trigger (/test-cgal on PR)

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Instead of triggering on every pull_request push, test-cgal now fires
only when a PR comment contains "/test-cgal".  This prevents the Pi
runner (3-4 GB RAM, swap constantly loaded) from queuing CGAL builds
faster than it can drain them on every WIP commit.

Workflow changes:
- Add `issue_comment: types: [created]` to the top-level `on:` block
- test-cgal `if:` condition:
    event is issue_comment
    AND comment is on a PR (issue.pull_request != null)
    AND comment body contains "/test-cgal"
- Checkout uses `refs/pull/N/head` so the PR branch is checked out
  correctly (issue_comment sets GITHUB_REF to the default branch, not
  the PR branch)

Usage: write "/test-cgal" as a PR comment to trigger the 277-test
CGAL suite.  The build uses CONFORMALLAB_LOW_MEMORY_BUILD=ON (-O0,
no PCH, unity batch 1) and runs in a 2000 MB container.

CLAUDE.md: CI table + status paragraph updated accordingly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Tarik Moussa
2026-05-31 01:03:56 +02:00
parent 449c5899c0
commit 2b456abc78
2 changed files with 36 additions and 28 deletions
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4
CLAUDE.md
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@@ -265,14 +265,14 @@ Three jobs in `.gitea/workflows/cpp-tests.yml`:
| Job | CMake flags | Deps | Triggers on | Status |
|---|---|---|---|---|
| `test-fast` | *(none)* | Eigen + GTest only | all branches | **active** |
| `test-cgal` | `-DWITH_CGAL_TESTS=ON -DCONFORMALLAB_LOW_MEMORY_BUILD=ON` | + Boost | pull requests only | **active** (re-enabled 2026-05-31) |
| `test-cgal` | `-DWITH_CGAL_TESTS=ON -DCONFORMALLAB_LOW_MEMORY_BUILD=ON` | + Boost | `/test-cgal` PR comment | **active** (comment-triggered, 2026-05-31) |
| `quality-gates` | *(none)* | + codespell, shellcheck | all branches (`needs: test-fast`) | **active** |
Runner: `eulernest` — self-hosted Raspberry Pi, ARM64, Ubuntu 22.04. Docker image: `git.eulernest.eu/conformallab/ci-cpp:latest`. `test-cgal` and `quality-gates` both need `test-fast` to pass first (`needs: test-fast`).
`quality-gates` runs four required structural gates: `license-headers.sh`, `cgal-conventions.py`, `codespell.sh`, `shellcheck.sh --strict`. Seven more gates (clang-format, cmake-format, cppcheck, sanitizers, clang-tidy, multi-compiler, reproducible-build) are local-only — see `scripts/quality/README.md`.
**`test-cgal` re-enabled 2026-05-31** with `CONFORMALLAB_LOW_MEMORY_BUILD=ON`: uses `-O0` (no debug info), PCH off, unity batch size 1 and `--no-keep-memory` linker flag. This drops cc1plus peak RAM from ~700 MB to ~150-200 MB per TU, fitting within a 2000 MB container on the 3-4 GB Raspberry Pi runner. Container memory raised from 1600 → 2000 MB (with 1000 MB swap headroom). Tests run ~15× slower at -O0 but all 277 pass. The two structural sub-gates (`scripts/check-test-counts.sh`, `scripts/try_it.sh`) remain inside the CGAL job and run after the test step.
**`test-cgal` is comment-triggered** (2026-05-31): write `/test-cgal` as a comment on any PR to start the CGAL suite manually. Not triggered on every push — the Pi runner (3-4 GB RAM, swap heavily loaded) cannot sustain a build on every WIP commit. `LOW_MEMORY_BUILD=ON` (-O0, no PCH, unity batch 1) keeps peak cc1plus RAM at ~150-200 MB, fitting in a 2000 MB container. All 277 tests pass in ~31 s run time. The two structural sub-gates (`scripts/check-test-counts.sh`, `scripts/try_it.sh`) still run after the test step.
Two other workflows are also restricted to `workflow_dispatch:` only (auto-trigger disabled 2026-05-26 while the codeberg pages-branch push is being stabilised):
- `.gitea/workflows/doxygen-pages.yml` — publishes Doxygen HTML + reviewer hub to the codeberg `pages` branch.