merge workflows into fewer files

This allows us to set proper dependencies between the jobs

Author: bastelfreak

.github/workflows/checks.yaml

@@ -11,6 +11,9 @@ on:
 permissions:
   contents: read
 
+env:
+  CI: true
+
 jobs:
   rubocop_checks:
     runs-on: ubuntu-24.04
@@ -27,10 +30,58 @@ jobs:
       - run: bundle exec rake rubocop
       - run: gem build --strict --verbose *.gemspec
 
+  linux_unit_tests:
+    needs:
+      - rubocop_checks
+    name: Ruby version
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - '2.7'
+          - '3.0'
+          - '3.2'
+          - '3.3'
+          - '3.4'
+          - '4.0'
+          - 'jruby-9.4.8.0'
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout current PR
+        uses: actions/checkout@v4
+
+      - name: Rspec checks
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake spec_random
+
+  windows_unit_tests:
+    name: Windows tests with Ruby ${{ matrix.ruby }}
+    strategy:
+      matrix:
+        ruby:
+          - '2.7'
+          - '3.2'
+    runs-on: windows-2025
+    steps:
+      - name: Checkout current PR
+        uses: actions/checkout@v4
+
+      - name: Rspec checks
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake spec_random
+
   tests:
     if: always()
     needs:
       - rubocop_checks
+      - linux_unit_tests
+      - windows_unit_tests
     runs-on: ubuntu-24.04
     name: Test suite
     steps: