From f04ad5039b922267bd2a5d6bfb703c85ae26fe51 Mon Sep 17 00:00:00 2001
From: Avik Pal <avikpal@mit.edu>
Date: Fri, 22 Nov 2024 14:13:24 -0500
Subject: [PATCH] ci: add downgrade testing

---
 .github/workflows/CI.yml        |  2 +-
 .github/workflows/downgrade.yml | 57 +++++++++++++++++++++++++++++++++
 Project.toml                    |  6 ++--
 3 files changed, 61 insertions(+), 4 deletions(-)
 create mode 100644 .github/workflows/downgrade.yml

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index a1adc4e8..955dd697 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -122,7 +122,7 @@ jobs:
       - uses: codecov/codecov-action@v5
         if: steps.run_tests.outcome == 'success'
         with:
-          file: lcov.info
+          files: lcov.info
   docs:
     name: Documentation
     runs-on: ubuntu-latest
diff --git a/.github/workflows/downgrade.yml b/.github/workflows/downgrade.yml
new file mode 100644
index 00000000..3f03f8d0
--- /dev/null
+++ b/.github/workflows/downgrade.yml
@@ -0,0 +1,57 @@
+name: Downgrade
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+jobs:
+  downgrade:
+    # if: ${{ !contains(github.event.head_commit.message, '[skip tests]') && github.base_ref == github.event.repository.default_branch }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        test_group:
+          - core
+          - neural_networks
+          - integration
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: "1.10"
+      - uses: julia-actions/julia-downgrade-compat@v1
+        with:
+          skip: "ReactantCore"
+      - name: "Install Dependencies and Run Tests"
+        run: |
+          import Pkg
+          Pkg.Registry.update()
+          # Install packages present in subdirectories
+          dev_pks = Pkg.PackageSpec[]
+          for path in ("lib/ReactantCore",)
+              push!(dev_pks, Pkg.PackageSpec(; path))
+          end
+          Pkg.develop(dev_pks)
+          Pkg.instantiate()
+          Pkg.test(; coverage="user")
+        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
+        id: run_tests
+        env:
+          JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
+          REACTANT_TEST_GROUP: ${{ matrix.test_group }}
+      - uses: julia-actions/julia-processcoverage@v1
+        if: steps.run_tests.outcome == 'success'
+      - uses: codecov/codecov-action@v5
+        if: steps.run_tests.outcome == 'success'
+        with:
+          files: lcov.info
diff --git a/Project.toml b/Project.toml
index 55519b21..7f3b631f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -37,10 +37,10 @@ ArrayInterface = "7.10"
 CEnum = "0.4, 0.5"
 Downloads = "1.6"
 Enzyme = "0.13.15"
-EnzymeCore = "0.8"
-GPUArraysCore = "0.1, 0.2"
+EnzymeCore = "0.8.6"
+GPUArraysCore = "0.1.6, 0.2"
 LinearAlgebra = "1.10"
-NNlib = "0.9"
+NNlib = "0.9.24"
 OrderedCollections = "1"
 Preferences = "1.4"
 ReactantCore = "0.1.2"