Enable Rails 7.0 specs support

Author: Mattia Roccoberton

.github/workflows/specs_rails70.yml

@@ -0,0 +1,40 @@
+---
+name: Specs Rails 7.0
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby: ['2.7', '3.0']
+        gemfile: ['rails70_activeadmin']
+
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Run tests
+        run: bundle exec rspec --profile
+
+      - name: On failure, archive screenshots as artifacts
+        uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: test-failed-screenshots
+          path: spec/dummy/tmp/screenshots

Appraisals

@@ -26,3 +26,9 @@ appraise 'rails61-activeadmin' do
   gem 'activeadmin'
   gem 'rails', '~> 6.1.0'
 end
+
+appraise 'rails70-activeadmin' do
+  gem 'activeadmin'
+  gem 'rails', '~> 7.0.0'
+  gem 'sprockets-rails'
+end

gemfiles/rails70_activeadmin.gemfile

@@ -0,0 +1,26 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activeadmin"
+gem "rails", "~> 7.0.0"
+gem "sprockets-rails"
+
+group :development, :test do
+  gem "puma"
+  gem "sassc"
+  gem "sqlite3"
+  gem "capybara"
+  gem "cuprite"
+  gem "rspec_junit_formatter"
+  gem "rspec-rails"
+  gem "fasterer"
+  gem "rubocop"
+  gem "rubocop-packaging"
+  gem "rubocop-performance"
+  gem "rubocop-rails"
+  gem "rubocop-rspec"
+  gem "pry-rails"
+end
+
+gemspec path: "../"