From d96fbd9e3c1b76829a34dce7de184820b7b2558d Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <noreply@anthropic.com>
Date: Fri, 9 Jan 2026 07:27:58 -0500
Subject: [PATCH] Split tests: move JET tests to nopre group excluded on pre
 Julia

- Create test/nopre directory with its own Project.toml for JET tests
- Update CI workflow to use GROUP matrix with All and nopre groups
- Exclude nopre group from pre Julia version to avoid JET compatibility issues
- Remove JET from main test dependencies
- Update runtests.jl to use GROUP environment variable

This follows the OrdinaryDiffEq pattern for organizing tests with
separate environments for tests that need specific dependencies.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 .github/workflows/ci.yml      | 10 +++++++++-
 test/Project.toml             |  2 +-
 test/nopre/Project.toml       |  7 +++++++
 test/{ => nopre}/jet_tests.jl |  0
 test/runtests.jl              | 26 +++++++++++++++++++++-----
 5 files changed, 38 insertions(+), 7 deletions(-)
 create mode 100644 test/nopre/Project.toml
 rename test/{ => nopre}/jet_tests.jl (100%)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f13451b..907d1738 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,11 +9,14 @@ on:
     tags: '*'
 jobs:
   test:
-    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    name: Julia ${{ matrix.version }} - ${{ matrix.group }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        group:
+          - All
+          - nopre
         version:
           - 'lts'
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
@@ -22,6 +25,9 @@ jobs:
           - ubuntu-latest
         arch:
           - x64
+        exclude:
+          - group: nopre
+            version: 'pre'
     steps:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
@@ -40,6 +46,8 @@ jobs:
             ${{ runner.os }}-
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
+        env:
+          GROUP: ${{ matrix.group }}
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5
         with:
diff --git a/test/Project.toml b/test/Project.toml
index d5b04460..488f242f 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -7,12 +7,12 @@ FiniteDiff = "6a86dc24-6348-571c-b903-95158fe2bd41"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 Functors = "d9f16b24-f501-4c13-a1f2-28368ffc5196"
 InvertedIndices = "41ab1584-1d38-5bbf-9106-f11c6c58b48f"
-JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
 JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 LabelledArrays = "2ee39098-c373-598a-b85f-a56591580800"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
 Optimisers = "3bd65402-5787-11e9-1adc-39752487f4e2"
+Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Reactant = "3c362404-f566-11ee-1572-e11a4b42c853"
 ReverseDiff = "37e2e3b7-166d-5795-8a7a-e32c996b4267"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
diff --git a/test/nopre/Project.toml b/test/nopre/Project.toml
new file mode 100644
index 00000000..a3afab31
--- /dev/null
+++ b/test/nopre/Project.toml
@@ -0,0 +1,7 @@
+[deps]
+ComponentArrays = "b0b7db55-cfe3-40fc-9ded-d10e2dbeff66"
+JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[compat]
+JET = "0.9, 0.10, 0.11"
diff --git a/test/jet_tests.jl b/test/nopre/jet_tests.jl
similarity index 100%
rename from test/jet_tests.jl
rename to test/nopre/jet_tests.jl
diff --git a/test/runtests.jl b/test/runtests.jl
index c60044aa..361bd735 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,3 +1,24 @@
+using Pkg
+using Test
+
+const GROUP = get(ENV, "GROUP", "All")
+
+function activate_nopre_env()
+    Pkg.activate("nopre")
+    Pkg.develop(PackageSpec(path = dirname(@__DIR__)))
+    Pkg.instantiate()
+end
+
+# Handle nopre group separately - requires its own environment
+if GROUP == "nopre"
+    activate_nopre_env()
+    @testset "JET" begin
+        include("nopre/jet_tests.jl")
+    end
+    exit(0)  # Exit after nopre tests
+end
+
+# Main test group (GROUP == "All" or default)
 using ComponentArrays
 using BenchmarkTools
 using ForwardDiff
@@ -7,7 +28,6 @@ using LabelledArrays
 using LinearAlgebra
 using StaticArrays
 using OffsetArrays
-using Test
 using Unitful
 using Functors
 
@@ -982,7 +1002,3 @@ end
 @testset "Reactant" begin
     include("reactant_tests.jl")
 end
-
-@testset "JET" begin
-    include("jet_tests.jl")
-end