From f93a13bfc2cbf7c2532606789ef648173f9bee1d Mon Sep 17 00:00:00 2001
From: "marcin p. joachimiak" <4625870+realmarcin@users.noreply.github.com>
Date: Mon, 25 May 2026 19:22:11 -0700
Subject: [PATCH] Add pytest CI workflow
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#71 added 43 unit tests across 4 files locking in idempotency,
header validation, and other pipeline contracts — but none of
them run in CI. validate-strict.yaml only checks per-record schema
validity; it can't catch a regression that, say, breaks
grounded_keys propagation in ground_causal_nodes.py or removes
self-suppression from audit_writers.py.

This workflow mirrors validate-strict.yaml's shape:
- Triggers on PRs and pushes-to-main that touch scripts/**,
  src/traitmech/**, tests/**, pyproject.toml, or this workflow.
- Uses astral-sh/setup-uv@v3 + Python 3.12 + uv sync --extra dev
  (pytest is in the dev extra per pyproject.toml).
- Runs uv run pytest tests/ with -v --tb=short for readable
  failures in the GitHub Actions log.

Verified locally:
  - python3 -c "import yaml; yaml.safe_load(open(...))" → yaml ok
  - uv run pytest tests/ → 56 passed

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 .github/workflows/pytest.yaml | 38 +++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 .github/workflows/pytest.yaml

diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
new file mode 100644
index 0000000..39c4f32
--- /dev/null
+++ b/.github/workflows/pytest.yaml
@@ -0,0 +1,38 @@
+name: pytest
+
+on:
+  pull_request:
+    paths:
+      - "scripts/**"
+      - "src/traitmech/**"
+      - "tests/**"
+      - "pyproject.toml"
+      - ".github/workflows/pytest.yaml"
+  push:
+    branches: [main]
+    paths:
+      - "scripts/**"
+      - "src/traitmech/**"
+      - "tests/**"
+      - "pyproject.toml"
+      - ".github/workflows/pytest.yaml"
+  workflow_dispatch:
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v3
+        with:
+          enable-cache: true
+
+      - name: Set up Python
+        run: uv python install 3.12
+
+      - name: Install dependencies
+        run: uv sync --extra dev
+
+      - name: Run pytest
+        run: uv run pytest tests/ -v --tb=short