From 77a64d4dc5987f30e66193c316f9e07a41bc9a35 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Mon, 8 Jun 2026 08:00:48 -0400
Subject: [PATCH] Canonical CI: grouped-tests.yml + root test/test_groups.toml

Convert the root Tests.yml test workflow to the canonical thin caller
(SciML/.github/.github/workflows/grouped-tests.yml@v1) and declare the
group x version matrix once in test/test_groups.toml.

- Core on [lts, 1, pre]
- QA on [lts, 1]  (kept off `pre` -- JET 0.11.x cannot resolve on 1.13
  prereleases), reproducing the old workflow's `exclude: pre x QA`.

runtests.jl already dispatches on GROUP (Core/QA), so no runtests.jl
change is needed and the default group-env-name (GROUP) applies. The old
caller used tests.yml@v1 with all defaults (check-bounds=yes,
coverage=true, coverage-directories=src,ext, apt-packages=""), so the new
thin caller needs no `with:` inputs.

Root-matrix script reproduces the old matrix exactly: 5/5 cells.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .github/workflows/Tests.yml | 22 +---------------------
 test/test_groups.toml       |  8 ++++++++
 2 files changed, 9 insertions(+), 21 deletions(-)
 create mode 100644 test/test_groups.toml

diff --git a/.github/workflows/Tests.yml b/.github/workflows/Tests.yml
index 5e5905c..c36b34f 100644
--- a/.github/workflows/Tests.yml
+++ b/.github/workflows/Tests.yml
@@ -14,25 +14,5 @@ concurrency:
 
 jobs:
   tests:
-    name: "Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1"
-          - "lts"
-          - "pre"
-        group:
-          - Core
-          - QA
-        exclude:
-          # JET 0.11.x has `julia = "1.12"` registry compat (1.12.x only),
-          # so it cannot resolve on Julia 1.13 prereleases. Skip the QA
-          # group on `pre` until upstream JET widens its julia compat.
-          - 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..820958e
--- /dev/null
+++ b/test/test_groups.toml
@@ -0,0 +1,8 @@
+[Core]
+versions = ["lts", "1", "pre"]
+
+[QA]
+# JET 0.11.x has `julia = "1.12"` registry compat (1.12.x only), so it cannot
+# resolve on Julia 1.13 prereleases. Keep QA off `pre` until upstream JET
+# widens its julia compat.
+versions = ["lts", "1"]