Allow override of bundler version or resolve from lock file

.github/workflows/test.yml

@@ -1,7 +1,9 @@
 name: Testing the GitHub Pages publication
 
 on:
-  push
+  push:
+    branches: [master]
+  pull_request:
 
 concurrency: test_environment
 
@@ -69,6 +71,115 @@ jobs:
         spec: cypress/integration/basic/**/*
         suffix: "basic"
 
+  jekyll_bundler_run: 
+    runs-on: ubuntu-latest
+    outputs:
+      sha: ${{ steps.run.outputs.sha }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/cache@v2
+      with:
+        path: sample_site_gemfiles/vendor/bundle
+        key: gems-${{ hashFiles('**/Gemfile') }}
+        restore-keys: |
+          gems
+    - name: Jekyll bundler run
+      id: run
+      uses: ./
+      with:
+        jekyll_build_options: "--config ../sample_site/_config.yml,../sample_site/_config_jekyll_bundler.yml"
+        jekyll_src: sample_site
+        target_branch: jekyll_bundler_test_pages_branch
+        jekyll_env: production
+        bundler_version: 2.3.11
+        github-token: ${{secrets.JEKYLL_PAT}} 
+      env:
+        JEKYLL_DEBUG: true
+    - id: extract-bundler-version
+      run: echo ::set-output name=value::$(bundler -v | cut -c 16- | xargs)
+    - uses: nick-fields/assert-action@v1
+      with:
+        expected: 2.3.11
+        actual: ${{ steps.extract-bundler-version.outputs.value }}
+        comparison: exact
+
+  jekyll_bundler_publish: 
+    runs-on: ubuntu-latest
+    needs: [basic_test, jekyll_bundler_run]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./.github/actions/publish
+      with: 
+        token: ${{ secrets.JEKYLL_PAT }}
+        sha: ${{ needs.jekyll_bundler_run.outputs.sha }} 
+        branch: "jekyll_bundler_test_pages_branch"
+        path: "/"
+
+  jekyll_bundler_test: 
+    runs-on: ubuntu-latest
+    needs: jekyll_bundler_publish
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./.github/actions/test
+      with: 
+        token: ${{ secrets.GITHUB_TOKEN }}
+        spec: cypress/integration/jekyll_bundler/**/*
+        suffix: "jekyll_bundler"
+
+  jekyll_bundler_from_lock_run: 
+    runs-on: ubuntu-latest
+    outputs:
+      sha: ${{ steps.run.outputs.sha }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/cache@v2
+      with:
+        path: sample_site_gemfiles/vendor/bundle
+        key: gems-${{ hashFiles('**/Gemfile') }}
+        restore-keys: |
+          gems
+    - name: Jekyll bundler lock run
+      id: run
+      uses: ./
+      with:
+        jekyll_build_options: "--config ../sample_site/_config.yml,../sample_site/_config_jekyll_bundler_lock.yml"
+        jekyll_src: sample_site
+        target_branch: jekyll_bundler_lock_test_pages_branch
+        jekyll_env: production
+        token: ${{ secrets.GITHUB_TOKEN }}
+      env:
+        JEKYLL_DEBUG: true
+    - id: extract-bundler-version
+      run: echo ::set-output name=value::$(bundler -v | cut -c 16- | xargs)
+    - uses: nick-fields/assert-action@v1
+      with:
+        expected: 2.1.4
+        actual: ${{ steps.extract-bundler-version.outputs.value }}
+        comparison: exact
+
+  jekyll_bundler_from_lock_publish: 
+    runs-on: ubuntu-latest
+    needs: [basic_test, jekyll_bundler_from_lock_run]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./.github/actions/publish
+      with: 
+        token: ${{ secrets.JEKYLL_PAT }}
+        sha: ${{ needs.jekyll_bundler_from_lock_run.outputs.sha }} 
+        branch: "jekyll_bundler_lock_test_pages_branch"
+        path: "/"
+
+  jekyll_bundler_from_lock_test: 
+    runs-on: ubuntu-latest
+    needs: jekyll_bundler_publish
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./.github/actions/test
+      with: 
+        token: ${{ secrets.GITHUB_TOKEN }}
+        spec: cypress/integration/jekyll_bundler_lock/**/*
+        suffix: "jekyll_bundler_lock"
+
   jekyll_src_run: 
     runs-on: ubuntu-latest
     outputs:

README.md

@@ -132,6 +132,9 @@ When set to `true`, previous version of the site will be restored before the Jek
 keep_files: [.git, hello.html]
 ```
 
+### bundler_version
+When set override the default bundler version provided. If not given will attempt to resolve bundler version from `Gemfile.lock` if one exists.
+
 ## Use case: multi version publishing 
 
 Say you want to create a documentation website where you both have the current version (`v3.0`), but also `v1.0` and `v2.0`. You can then use a combination of `keep_history` and `target_path` along with the `actions/checkout@v2`action so that each version gets pushed in a separate folder without overwritting the previous one. 

action.yml

@@ -35,6 +35,9 @@ inputs:
       new dependencies. For example, use `apk --update add 
       imagemagick` to install ImageMagick.
     required: false
+  bundler_version:
+    description: 'When set override the default bundler version provided.'
+    required: false
 outputs:
   sha: 
     description: 'Generated commit SHA1 that will be published'

entrypoint.sh

@@ -3,6 +3,11 @@ set -e
 
 echo "Starting the Jekyll Action"
 
+if [ -n "${INPUT_BUNDLER_VERSION}" ]; then
+  echo "Installing bundler version specified by the user."
+  gem install bundler -v ${INPUT_BUNDLER_VERSION}
+fi 
+
 if [ -n "$INPUT_PRE_BUILD_COMMANDS" ]; then
   echo "Execute pre-build commands specified by the user."
   eval "$INPUT_PRE_BUILD_COMMANDS"
@@ -121,6 +126,13 @@ echo "::debug::Local branch is ${LOCAL_BRANCH}"
 
 cd "${GITHUB_WORKSPACE}/${GEM_SRC}"
 
+if [ -z "${INPUT_BUNDLER_VERSION}" ] && [ -f "Gemfile.lock" ]; then 
+  echo "Resolving bundler version from Gemfile.lock"
+  VERSION_LINE_NUMBER=$(($(cat Gemfile.lock | grep -n 'BUNDLED WITH' | grep -oE '\d+')+1))
+  BUNDLER_VERSION=$(head -n ${VERSION_LINE_NUMBER} Gemfile.lock  | tail -n 1 | xargs)
+  gem install bundler -v ${BUNDLER_VERSION}
+fi
+
 bundle config path "$PWD/vendor/bundle"
 echo "::debug::Bundle config set succesfully"
 bundle install

sample_site/_config_jekyll_bundler.yml

@@ -0,0 +1,2 @@
+title: Jekyll AsciiDoc Action - Jekyll Bundler
+test_id: jekyll_bundler

sample_site/_config_jekyll_bundler_lock.yml

@@ -0,0 +1,2 @@
+title: Jekyll AsciiDoc Action - Jekyll Bundler Lock
+test_id: jekyll_bundler_lock

tests/e2e/cypress/integration/jekyll_bundler/spec.js

@@ -0,0 +1,6 @@
+it('works', () => {
+  cy.visit('/jekyll-action/')
+  cy.get('#jekyll_bundler').should('be.visible')
+  cy.get('body main div header h1').should('contain', 'Jekyll AsciiDoc Action - Jekyll Bundler')
+  cy.get('#env').should('contain', 'production')
+})

tests/e2e/cypress/integration/jekyll_bundler_lock/spec.js

@@ -0,0 +1,6 @@
+it('works', () => {
+  cy.visit('/jekyll-action/')
+  cy.get('#jekyll_bundler_lock').should('be.visible')
+  cy.get('body main div header h1').should('contain', 'Jekyll AsciiDoc Action - Jekyll Bundler Lock')
+  cy.get('#env').should('contain', 'production')
+})