Cross Version Testing Locally and Faster CI

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ on:
 jobs:
   ci:
     if: "!contains(github.event.commits[0].message, '[ci skip]')"
-    name: 'Ruby ${{ matrix.ruby_version }}'
+    name: 'Ruby ${{ matrix.ruby_version }} '
     runs-on: 'ubuntu-latest'
 
     strategy:
@@ -23,82 +23,40 @@ jobs:
         - 2.5
         - 2.7
         - 3.0
-        - jruby-9.2.14.0
-
+        - jruby:9.2.14.0
     steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 5
-    - name: "Set up Ruby ${{ matrix.ruby_version }}"
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby_version }}
-        bundler-cache: true
-    - name: Run Unit Tests
-      run: bash script/test
-      env:
-        CI: true
-    - name: Run Cucumber Features
-      run: bash script/cucumber
-      env:
-        CI: true
-    - name: Sanity Check
-      run: bash script/default-site
-
-  style_check:
+      - uses: actions/checkout@v2
+      - name: Download released earth
+        run: "sudo /bin/sh -c 'wget https://github.com/earthly/earthly/releases/download/v0.5.7/earthly-linux-amd64 -O /usr/local/bin/earthly && chmod +x /usr/local/bin/earthly'"
+      - name: Execute tests
+        run: earthly --build-arg RUBY=${{ matrix.ruby_version }} +test
+  profile_docs:
     if: "!contains(github.event.commits[0].message, '[ci skip]')"
-    name: 'Code Style Check (Ruby ${{ matrix.ruby_version }})'
+    name: 'Profile Docs Site (Ruby ${{ matrix.ruby_version }})'
     runs-on: 'ubuntu-latest'
     strategy:
       fail-fast: false
       matrix:
         ruby_version:
-        - 2.5
+        - 2.4 # Minimum required Ruby version in gemspec
     steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 5
-    - name: "Set up Ruby ${{ matrix.ruby_version }}"
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby_version }}
-        bundler-cache: true
-    - name: Run RuboCop
-      run: bash script/fmt
-
-  profile_docs:
+      - uses: actions/checkout@v2
+      - name: Download released earth
+        run: "sudo /bin/sh -c 'wget https://github.com/earthly/earthly/releases/download/v0.5.7/earthly-linux-amd64 -O /usr/local/bin/earthly && chmod +x /usr/local/bin/earthly'"
+      - name: Execute tests
+        run: earthly --build-arg RUBY=${{ matrix.ruby_version }} +profile-docs
+  style_check:
     if: "!contains(github.event.commits[0].message, '[ci skip]')"
-    name: 'Profile Docs Site (Ruby ${{ matrix.ruby_version }})'
+    name: 'Style Check (Ruby ${{ matrix.ruby_version }})'
     runs-on: 'ubuntu-latest'
     strategy:
       fail-fast: false
       matrix:
         ruby_version:
-        - 2.4 # Minimum required Ruby version in gemspec
+        - 2.5 
     steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 5
-    - name: "Set up Ruby ${{ matrix.ruby_version }}"
-      uses: actions/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby_version }}
-    - name: Cache dependencies
-      uses: actions/cache@v2.1.3
-      with:
-        path: vendor/bundle
-        key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-gems-
-    - name: 'Update Rubygems and Bundler'
-      run: |
-        gem update --system --no-document
-        gem update bundler --no-document
-    - name: Set up bundle
-      run: |
-        bundle config path vendor/bundle
-        bundle install --jobs 4 --retry 3
-    - name: Build Docs site with --profile
-      run: bash script/profile-docs
-    - name: Profile memory usage of building Docs site
-      run: bash script/memprof
+      - uses: actions/checkout@v2
+      - name: Download released earth
+        run: "sudo /bin/sh -c 'wget https://github.com/earthly/earthly/releases/download/v0.5.7/earthly-linux-amd64 -O /usr/local/bin/earthly && chmod +x /usr/local/bin/earthly'"
+      - name: Execute tests
+        run: earthly --build-arg RUBY=${{ matrix.ruby_version }} +style-check

.rubocop.yml

@@ -213,6 +213,8 @@ Minitest/RefutePathExists:
   Enabled: true
 Minitest/UnspecifiedException:
   Enabled: true
+Minitest/AssertEmptyLiteral:
+  Enabled: false
 
 Naming/FileName:
   Enabled: false

Earthfile

@@ -0,0 +1,49 @@
+FROM alpine
+
+# Run locally: `earthly +all` to run full CI process
+all:
+    BUILD --build-arg RUBY=3.0 +test
+    BUILD --build-arg RUBY=2.7 +test
+    BUILD --build-arg RUBY=2.5 +test
+    BUILD --build-arg RUBY=jruby:9.2.14.0 +test
+    BUILD style-check
+    BUILD profile-docs
+
+# Run locally: `earthly +test`
+# Run with specific version: `earthly --build-arg RUBY=2.5 +test`
+test:
+    FROM +deps
+    RUN script/test    
+    RUN script/cucumber
+    RUN script/default-site
+
+style-check:
+    FROM +deps
+    RUN script/fmt
+
+profile-docs:
+    FROM +deps
+    RUN bundle install --jobs 4
+    RUN script/profile-docs
+    RUN script/memprof
+
+# Install dependencies and copy in source
+# used in above steps
+deps:
+    ARG RUBY=3.0
+    IF case $RUBY in jruby*) ;; *) false; esac
+        FROM $RUBY
+        ENV JRUBY_OPTS="--dev -J-XX:+TieredCompilation -J-XX:TieredStopAtLevel=1  -J-XX:CompileThreshold=10 -J-XX:ReservedCodeCacheSize=128M"
+    ELSE
+        FROM ruby:$RUBY
+    END
+    WORKDIR /src
+    RUN apt-get update && apt-get install nodejs dnsutils git make coreutils g++ build-essential -y
+    RUN gem install bundler
+    RUN gem install sassc -v '2.4.0' --source 'https://rubygems.org/'
+    COPY Gemfile .
+    COPY jekyll.gemspec .
+    COPY lib/jekyll/version.rb lib/jekyll/version.rb
+    COPY test test
+    RUN bundle install --jobs 4
+    COPY . .

docs/_docs/contributing.md

@@ -153,6 +153,25 @@ script/cucumber features/blah.feature
 Both `script/test` and `script/cucumber` can be run without arguments to
 run its entire respective suite.
 
+### Test Ruby Versions Locally
+
+The CI process runs the build against with serveral [Ruby](https://github.com/jekyll/jekyll/blob/master/.github/workflows/ci.yml#L22) versions.  This process can be repeated locally without changing your default installation by using [earthly](https://earthly.dev/get-earthly).
+
+To run the full CI process across all supported Ruby Versions:
+```sh
+earthly +all
+```
+
+To run the tests for a specfic version of Ruby:
+```sh
+earthly --build-arg RUBY=2.5 +test
+```
+
+To run the tests for a specfic version of JRuby specify the full version:
+```sh
+earthly --build-arg RUBY=jruby:9.2.14.0 +test
+```
+
 ## Visual Studio Code Development Container
 
 If you've got [Visual Studio Code](https://code.visualstudio.com/) with the [Remote Development Extension Pack](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.vscode-remote-extensionpack) installed then simply opening this repository in Visual Studio Code and following the prompts to "Re-open In A Development Container" will get you setup and ready to go with a fresh environment with all the requirements installed.

features/post_excerpts.feature

@@ -108,7 +108,7 @@ Feature: Post excerpts
     Then I should get a zero exit status
     And I should not see "Kramdown warning" in the build output
     But I should see exactly "<p>Install Jekyll</p>" in "_site/just-text-excerpt.html"
-    And I should see "<p>Alpha <sup id=\"fnref:1\" role=\"doc-noteref\"><a href=\"#fn:1\" class=\"footnote\">1</a></sup></p>" in "_site/text-and-footnote.html"
+    And I should see "<p>Alpha <sup id=\"fnref:1\" role=\"doc-noteref\"><a href=\"#fn:1\" class=\"footnote\" rel=\"footnote\">1</a></sup></p>" in "_site/text-and-footnote.html"
     And I should see "<p>Omega sigma <a href=\"#fnref:1\" class=\"reversefootnote\" role=\"doc-backlink\">&#8617;</a></p>" in "_site/text-and-footnote.html"
     And I should see "<p>Read <a href=\"docs.jekyll.com\">docs</a></p>" in "_site/text-and-reference-link.html"
     And I should see "<p>Check out <a href=\"jekyllrb.com\">jekyll</a></p>" in "_site/text-and-self-refencing-link.html"