ci: add downstream integration test against Active Record

Author: flavorjones

.github/workflows/downstream.yml

@@ -5,7 +5,7 @@ concurrency:
 on:
   workflow_dispatch:
   schedule:
-    - cron: "0 8 * * 1,3,5" # At 08:00 on Monday, Wednesday, and Friday # https://crontab.guru/#0_8_*_*_1,3,5
+    - cron: "0 8 * * 3" # At 08:00 on Wednesday # https://crontab.guru/#0_8_*_*_3
   push:
     branches:
       - main
@@ -18,7 +18,26 @@ on:
       - '*'
 
 jobs:
-  skeleton:
+  activerecord:
     runs-on: ubuntu-latest
     steps:
-      - run: echo hello world
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby-pkgs@v1
+        with:
+          ruby-version: "3.3"
+          bundler: latest
+          bundler-cache: true
+          apt-get: sqlite3
+      - run: bundle exec rake compile
+      - name: checkout rails and configure
+        run: |
+          git clone --depth 1 --branch main https://github.com/rails/rails
+          cd rails
+          bundle install
+          bundle remove sqlite3
+          bundle add sqlite3 --path=".."
+          sed -i 's/^gem "sqlite3".*//' activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
+      - name: run tests
+        run: |
+          cd rails/activerecord
+          bundle exec rake test:sqlite3