Run Ruby 2.2 tests on old Ubuntu

Author: RobinDaugherty

.github/workflows/ci.yml

@@ -16,7 +16,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 2.2
           - 2.3
           - 2.4
           - 2.5
@@ -25,7 +24,6 @@ jobs:
           - 3.0
           - 3.1
           - 3.2
-          # - truffleruby-head
         gemfile:
           # These are located in the gemfiles/ folder
           - rails42
@@ -57,15 +55,6 @@ jobs:
         exclude:
           # Following https://www.fastruby.io/blog/ruby/rails/versions/compatibility-table.html
           # to decide what to include.
-          - { ruby: 2.2,              gemfile: rails60 }
-          - { ruby: 2.2,              gemfile: rails60_boc }
-          - { ruby: 2.2,              gemfile: rails60_haml }
-          - { ruby: 2.2,              gemfile: rails61 }
-          - { ruby: 2.2,              gemfile: rails61_boc }
-          - { ruby: 2.2,              gemfile: rails61_haml }
-          - { ruby: 2.2,              gemfile: rails70 }
-          - { ruby: 2.2,              gemfile: rails70_boc }
-          - { ruby: 2.2,              gemfile: rails70_haml }
           - { ruby: 2.3,              gemfile: rails42 }
           - { ruby: 2.3,              gemfile: rails42_boc }
           - { ruby: 2.3,              gemfile: rails42_haml }
@@ -177,14 +166,9 @@ jobs:
           - { ruby: 3.2,              gemfile: rails60 }
           - { ruby: 3.2,              gemfile: rails60_boc }
           - { ruby: 3.2,              gemfile: rails60_haml }
-          # - { ruby: truffleruby-head, gemfile: rails42_boc }
-          # - { ruby: truffleruby-head, gemfile: rails50_boc }
-          # - { ruby: truffleruby-head, gemfile: rails51_boc }
-          # - { ruby: truffleruby-head, gemfile: rails52_boc }
-          # - { ruby: truffleruby-head, gemfile: rails60_boc }
-          # - { ruby: truffleruby-head, gemfile: rails61_boc }
-          # - { ruby: truffleruby-head, gemfile: rails70_boc }
-          # - { ruby: truffleruby-head, gemfile: rack_boc }
+
+    env:
+      BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
 
     steps:
 
@@ -194,23 +178,62 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
 
-    - uses: actions/cache@v2
+    - name: Bundle install
+      run: |
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+
+    - name: RSpec
+      run: bundle exec rspec -f doc --color
+
+  test_older:
+    # Ruby 2.2 has a known issue on Ubuntu 22, so we must test it on Ubuntu 20
+    # https://github.com/ruby/setup-ruby/issues/496
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - 2.2
+        gemfile:
+          # These are located in the gemfiles/ folder
+          - rails42
+          - rails50
+          - rails51
+          - rails52
+          - rails42_haml
+          - rails50_haml
+          - rails51_haml
+          - rails52_haml
+          - rails42_boc
+          - rails50_boc
+          - rails51_boc
+          - rails52_boc
+          - rack
+          - rack_boc
+          # - pry09
+          # - pry10
+          # - pry11
+
+    env:
+      BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
+
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
       with:
-        path: gemfiles/vendor/bundle
-        key: v3-${{ runner.os }}-branch-${{ github.ref }}-ruby-${{ matrix.ruby }}-gemfile-${{ matrix.gemfile }}-${{ hashFiles(format('gemfiles/{0}.gemfile', matrix.gemfile)) }}
-        restore-keys: |
-          v3-${{ runner.os }}-branch-${{ github.ref }}-ruby-${{ matrix.ruby }}-gemfile-${{ matrix.gemfile }}
-          v3-${{ runner.os }}-branch-master-ruby-${{ matrix.ruby }}-gemfile-${{ matrix.gemfile }}
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
 
     - name: Bundle install
       run: |
         bundle config path vendor/bundle
         bundle install --jobs 4 --retry 3
-      env:
-        BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
 
     - name: RSpec
       run: bundle exec rspec -f doc --color
-      env:
-        BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile