From 536f8c5a11dab4be42064ffc06142fa3a04b6859 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Mon, 8 Jun 2026 07:57:26 -0400
Subject: [PATCH] Canonical CI: grouped-tests.yml + root test/test_groups.toml

Convert the root Tests.yml workflow to the canonical thin caller of
SciML/.github/.github/workflows/grouped-tests.yml@v1, with the test
matrix declared once in test/test_groups.toml at the repo root.

The previous Tests.yml hand-maintained a version x group matrix
({1,lts,pre} x {Core,QA}, excluding pre/QA) calling tests.yml@v1
directly. The new test_groups.toml declares Core on [lts,1,pre] and QA
on [lts,1], which the --root-matrix script reproduces as the identical
5-cell set. All defaults (check-bounds=yes, coverage=true,
coverage-directories=src,ext, GROUP env var) are unchanged, so the thin
caller needs no `with:` inputs. The `on:` triggers, `concurrency:`
block, workflow filename, and `name:` are preserved so branch-protection
status checks remain intact.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .github/workflows/Tests.yml | 19 +------------------
 test/test_groups.toml       |  5 +++++
 2 files changed, 6 insertions(+), 18 deletions(-)
 create mode 100644 test/test_groups.toml

diff --git a/.github/workflows/Tests.yml b/.github/workflows/Tests.yml
index 233590f..b3ff677 100644
--- a/.github/workflows/Tests.yml
+++ b/.github/workflows/Tests.yml
@@ -18,22 +18,5 @@ concurrency:
 
 jobs:
   tests:
-    name: "Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1"
-          - "lts"
-          - "pre"
-        group:
-          - Core
-          - QA
-        exclude:
-          - version: "pre"
-            group: QA
-    uses: "SciML/.github/.github/workflows/tests.yml@v1"
-    with:
-      julia-version: "${{ matrix.version }}"
-      group: ${{ matrix.group }}
+    uses: "SciML/.github/.github/workflows/grouped-tests.yml@v1"
     secrets: "inherit"
diff --git a/test/test_groups.toml b/test/test_groups.toml
new file mode 100644
index 0000000..1fe84cd
--- /dev/null
+++ b/test/test_groups.toml
@@ -0,0 +1,5 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+versions = ["lts", "1"]