From 31f7eeede1fe5f7185cc355d00c831ff91f95cc3 Mon Sep 17 00:00:00 2001
From: Michael Abbott <32575566+mcabbott@users.noreply.github.com>
Date: Sun, 4 Jul 2021 16:52:05 -0400
Subject: [PATCH 1/3] add integration tests

---
 .github/workflows/downstream.yml | 50 ++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 .github/workflows/downstream.yml

diff --git a/.github/workflows/downstream.yml b/.github/workflows/downstream.yml
new file mode 100644
index 0000000..4767824
--- /dev/null
+++ b/.github/workflows/downstream.yml
@@ -0,0 +1,50 @@
+name: IntegrationTest
+on:
+  push:
+    branches: [master]
+    tags: [v*]
+  pull_request:
+
+jobs:
+  test:
+    name: ${{ matrix.package.repo }}/${{ matrix.package.group }}
+    runs-on: ${{ matrix.os }}
+    env:
+      GROUP: ${{ matrix.package.group }}
+    strategy:
+      fail-fast: false
+      matrix:
+        julia-version: [1]
+        os: [ubuntu-latest]
+        package:
+          - {user: JuliaDiff, repo: ForwardDiff.jl, group: All}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.julia-version }}
+          arch: x64
+      - uses: julia-actions/julia-buildpkg@latest
+      - name: Clone Downstream
+        uses: actions/checkout@v2
+        with:
+          repository: ${{ matrix.package.user }}/${{ matrix.package.repo }}
+          path: downstream
+      - name: Load this and run the downstream tests
+        shell: julia --color=yes --project=downstream {0}
+        run: |
+          using Pkg
+          try
+            # force it to use this PR's version of the package
+            Pkg.develop(PackageSpec(path="."))  # resolver may fail with main deps
+            Pkg.update()
+            Pkg.test()  # resolver may fail with test time deps
+          catch err
+            err isa Pkg.Resolve.ResolverError || rethrow()
+            # If we can't resolve that means this is incompatible by SemVer and this is fine
+            # It means we marked this as a breaking change, so we don't need to worry about
+            # Mistakenly introducing a breaking change, as we have intentionally made one
+            @info "Not compatible with this release. No problem." exception=err
+            exit(0)  # Exit immediately, as a success
+          end

From 0d5260ec2afc40a24be92d48f882e03993b5c900 Mon Sep 17 00:00:00 2001
From: Michael Abbott <32575566+mcabbott@users.noreply.github.com>
Date: Sun, 4 Jul 2021 17:00:31 -0400
Subject: [PATCH 2/3] a few more packages

---
 .github/workflows/downstream.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/downstream.yml b/.github/workflows/downstream.yml
index 4767824..2356cbe 100644
--- a/.github/workflows/downstream.yml
+++ b/.github/workflows/downstream.yml
@@ -18,6 +18,9 @@ jobs:
         os: [ubuntu-latest]
         package:
           - {user: JuliaDiff, repo: ForwardDiff.jl, group: All}
+          - {user: FluxML, repo: Tracker.jl, group: All}
+          - {user: JuliaSymbolics, repo: Symbolics.jl, group: All}
+          - {user: SciML, repo: ModelingToolkit.jl, group: All}
 
     steps:
       - uses: actions/checkout@v2

From 14ca2a643f8351f0043f393eff72cd6bb9d5f1bb Mon Sep 17 00:00:00 2001
From: Michael Abbott <32575566+mcabbott@users.noreply.github.com>
Date: Sun, 4 Jul 2021 20:06:05 -0400
Subject: [PATCH 3/3] a few more

---
 .github/workflows/downstream.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/downstream.yml b/.github/workflows/downstream.yml
index 2356cbe..322ca50 100644
--- a/.github/workflows/downstream.yml
+++ b/.github/workflows/downstream.yml
@@ -19,8 +19,11 @@ jobs:
         package:
           - {user: JuliaDiff, repo: ForwardDiff.jl, group: All}
           - {user: FluxML, repo: Tracker.jl, group: All}
+          - {user: FluxML, repo: Zygote.jl, group: All}
+          - {user: invenia, repo: Nabla.jl, group: All}
           - {user: JuliaSymbolics, repo: Symbolics.jl, group: All}
           - {user: SciML, repo: ModelingToolkit.jl, group: All}
+          - {user: PSORLab, repo: EAGO.jl, group: All}
 
     steps:
       - uses: actions/checkout@v2