Setup testing similar to dartsass-rails

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: [ "3.0", "3.1", "3.2", "3.3" ]
+        gemfile:
+          - Gemfile
+          - gemfiles/rails_7_0_propshaft.gemfile
+          - gemfiles/rails_7_1_propshaft.gemfile
+          - gemfiles/rails_main_propshaft.gemfile
+          - gemfiles/rails_7_0_sprockets.gemfile
+          - gemfiles/rails_7_1_sprockets.gemfile
+          - gemfiles/rails_main_sprockets.gemfile
+        exclude:
+          - ruby: "3.0"
+            gemfile: gemfiles/rails_main_propshaft.gemfile
+          - ruby: "3.0"
+            gemfile: gemfiles/rails_main_sprockets.gemfile
+
+        continue-on-error: [ false ]
+
+    name: ${{ format('Tests (Ruby {0}, {1})', matrix.ruby, matrix.gemfile) }}
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.continue-on-error }}
+
+    env:
+      BUNDLE_GEMFILE: ${{ matrix.gemfile }}
+      BUNDLE_PATH: "vendor/bundle-${{ matrix.gemfile }}"
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Remove Gemfile lock
+        run: |
+          rm -f $BUNDLE_GEMFILE.lock
+
+      - name: Install Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: false
+
+      - name: Install dependencies
+        run: |
+          bundle install --jobs 4 --retry 3
+
+      - uses: actions/setup-node@v4
+      - uses: oven-sh/setup-bun@v1
+
+      - name: Run tests
+        run: |
+          bundle exec rake

.gitignore

@@ -1,2 +1,9 @@
+/.bundle/
 .byebug_history
 *.gem
+/tmp/
+/node_modules
+**/tmp/
+
+# Ignore Gemfile.lock files for Rails main branch.
+/gemfiles/rails_main*.gemfile.lock

Appraisals

@@ -0,0 +1,29 @@
+appraise "rails_7_0_sprockets" do
+  gem "rails", "~> 7.0.0"
+  gem "sprockets-rails"
+end
+
+appraise "rails_7_0_propshaft" do
+  gem "rails", "~> 7.0.0"
+  gem "propshaft"
+end
+
+appraise "rails_7_1_sprockets" do
+  gem "rails", "~> 7.1.0"
+  gem "sprockets-rails"
+end
+
+appraise "rails_7_1_propshaft" do
+  gem "rails", "~> 7.1.0"
+  gem "propshaft"
+end
+
+appraise "rails_main_sprockets" do
+  gem "rails", github: "rails/rails", branch: "main"
+  gem "sprockets-rails"
+end
+
+appraise "rails_main_propshaft" do
+  gem "rails", github: "rails/rails", branch: "main"
+  gem "propshaft"
+end

Gemfile

@@ -1,13 +1,13 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-# Specify your gem's dependencies in importmap-rails.gemspec.
+# Specify your gem's dependencies in jsbundling-rails.gemspec.
 gemspec
 
 rails_version = ENV["RAILS_VERSION"] || "6.1.0"
 gem "rails", "~> #{rails_version}"
-
-gem "sqlite3"
+gem "appraisal"
+gem "debug", ">= 1.0.0"
 
 group :test do
   gem "turbo-rails"