Add tests for ruby, jruby

.github/workflows/ci-non-mri.yml

@@ -0,0 +1,23 @@
+name: Non MRI CI
+on: [push, pull_request]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - { os: ubuntu-latest , ruby: jruby, allow-failure: true }
+          - { os: ubuntu-latest , ruby: jruby-head, allow-failure: true }
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Run tests
+        timeout-minutes: 10
+        run: bundle exec rake

.github/workflows/ci.yml

@@ -0,0 +1,20 @@
+name: CI
+on: [push, pull_request]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: [2.5, 2.6, 2.7, 3.0]
+
+    steps:
+      - 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 rake

.github/workflows/isolated.yml

@@ -0,0 +1,20 @@
+name: CI isolated tests
+on: [push, pull_request]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby: [2.7]
+
+    steps:
+      - 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 rake test_isolated

.github/workflows/mri-head.yml

@@ -0,0 +1,22 @@
+name: MRI head CI
+on: [push, pull_request]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - { os: ubuntu-latest , ruby: head, allow-failure: true }
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Run tests
+        timeout-minutes: 10
+        run: bundle exec rake

CHANGELOG.md

@@ -4,7 +4,7 @@ Get upgrade notes from Sprockets 3.x to 4.x at https://github.com/rails/sprocket
 
 ## Master
 
-- Move rubocop check to GitHub action.[#67x](https://github.com/rails/sprockets/pull/67x)
+- Move to GitHub actions.[#67x](https://github.com/rails/sprockets/pull/67x)
 - Remove remaining support for Ruby < 2.4.[#672](https://github.com/rails/sprockets/pull/672)
 
 ## 4.0.2