Add TruffleRuby 19.3.1

* See https://github.com/eregon/ruby-build/pull/1#issuecomment-573237440

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
       matrix:
         os: [ ubuntu-16.04, ubuntu-18.04, macos-latest, windows-latest ]
         # Use various version syntaxes here for testing
-        ruby: [ 2.3, ruby-2.4, 2.5, ruby-2.6.5, 2.7.0, jruby, truffleruby ]
+        ruby: [ .ruby-version, 2.3, ruby-2.4, 2.5, ruby-2.6.5, 2.7.0, jruby, truffleruby ]
         exclude:
         - os: windows-latest
           ruby: 2.3
@@ -21,8 +21,21 @@ jobs:
     - uses: ./
       with:
         ruby-version: ${{ matrix.ruby }}
-    - run: ruby -v
+    - run: ruby --version
     - run: ridk version
       if: matrix.os == 'windows-latest'
-    - run: ruby -ropen-uri -e 'puts open(%{https://rubygems.org/}) { |f| f.read(2014) }'
-    - run: gem install json --no-document
+    - name: OpenSSL test
+      run: ruby -ropen-uri -e 'puts open(%{https://rubygems.org/}) { |f| f.read(2014) }'
+    - name: C extension test
+      run: gem install json --no-document
+    - name: Check that Bundler is installed
+      run: bundle --version
+    - name: Check that Bundler works
+      run: bundle install
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: yarn install
+    - run: yarn run lint

.ruby-version

@@ -0,0 +1 @@
+ruby-2.6.5

Gemfile

@@ -0,0 +1,5 @@
+# Used for testing
+source 'https://rubygems.org'
+
+gem "path"
+gem "json"

README.md

@@ -11,9 +11,9 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 
 | Interpreter | Versions |
 | ----------- | -------- |
-| Ruby | 2.3.8, 2.4.9, 2.5.7, 2.6.5, 2.7.0 |
+| Ruby | 2.3.0 - 2.3.8, 2.4.0 - 2.4.9, 2.5.0 - 2.5.7, 2.6.0 - 2.6.5, 2.7.0 |
 | JRuby | 9.2.9.0 |
-| TruffleRuby  | 19.3.0 |
+| TruffleRuby  | 19.3.0, 19.3.1 |
 
 The recommended way to refer to these versions is:
 `2.3`, `2.4`, `2.5`, `2.6`, `2.7`, `jruby`, `truffleruby`.  
@@ -24,6 +24,7 @@ for the always up-to-date list of available Ruby versions.
 
 Note that Ruby 2.3 and the OpenSSL version it needs (1.0.2) are both end-of-life,
 which means Ruby 2.3 is unmaintained and considered insecure.
+On Windows, Ruby 2.4 uses OpenSSL 1.0.2, which is no longer maintained.
 
 ### Supported Platforms
 
@@ -82,6 +83,37 @@ jobs:
 * short version like `2.6`, automatically using the latest release matching that version (`2.6.5`)
 * version only like `2.6.5`, assumes MRI for the engine
 * engine only like `truffleruby`, uses the latest stable release of that implementation
+* `.ruby-version` (also the default value) reads from the project's `.ruby-version` file
+
+### Bundler
+
+Currently, Bundler is guaranteed to be installed for all versions.
+If the Ruby ships with Bundler (Ruby >= 2.6), that version is used.
+Otherwise (Ruby < 2.6), Bundler 1 is installed when that Ruby was built.
+
+### Caching `bundle install`
+
+You can cache the installed gems with these two steps:
+
+```yaml
+    - uses: actions/cache@v1
+      with:
+        path: vendor/bundle
+        key: bundle-use-ruby-${{ matrix.os }}-${{ matrix.ruby }}-${{ hashFiles('**/Gemfile.lock') }}
+        restore-keys: |
+          bundle-use-ruby-${{ matrix.os }}-${{ matrix.ruby }}-
+    - name: Bundle install
+      run: |
+        bundle config path vendor/bundle
+        bundle install --jobs 4 --retry 3
+```
+
+When using a single job with a Ruby version, replace `${{ matrix.ruby }}` with the Ruby version.  
+When using `.ruby-version`, replace `${{ matrix.ruby }}` with `${{ hashFiles('.ruby-version') }}`.
+
+This uses the [cache action](https://github.com/actions/cache).
+The code above is a more complete version of the [Ruby - Gem example](https://github.com/actions/cache/blob/master/examples.md#ruby---gem).
+Make sure to include `use-ruby` in the `key` to avoid conflicting with previous caches.
 
 ## Limitations
 

action.yml

@@ -6,8 +6,8 @@ branding:
   icon: download
 inputs:
   ruby-version:
-    description: 'Engine and version to use, see the syntax in the README'
-    required: true
+    description: 'Engine and version to use, see the syntax in the README. Reads from .ruby-version if unset.'
+    default: '.ruby-version'
 outputs:
   ruby-prefix:
     description: 'The prefix of the installed ruby'

dist/index.js

@@ -1399,6 +1399,10 @@ async function run() {
     if (platform === 'windows-latest') {
       rubyPrefix = await windows.downloadExtractAndSetPATH(ruby)
     } else {
+      if (ruby.startsWith('jruby')) {
+        // Workaround for https://github.com/actions/virtual-environments/issues/242
+        core.exportVariable('CLASSPATH', '')
+      }
       rubyPrefix = await downloadAndExtract(platform, ruby)
       core.addPath(`${rubyPrefix}/bin`)
     }
@@ -1428,6 +1432,11 @@ async function getLatestReleaseTag() {
 }
 
 async function getRubyEngineAndVersion(rubyVersion) {
+  if (rubyVersion === '.ruby-version') { // Read from .ruby-version
+    rubyVersion = fs.readFileSync('.ruby-version', 'utf8').trim()
+    console.log(`Using ${rubyVersion} as input from file .ruby-version`)
+  }
+
   let engine, version
   if (rubyVersion.match(/^\d+/)) { // X.Y.Z => ruby-X.Y.Z
     engine = 'ruby'
@@ -6463,6 +6472,7 @@ __webpack_require__.r(__webpack_exports__);
 // Most of this logic is from
 // https://github.com/MSP-Greg/actions-ruby/blob/master/lib/main.js
 
+const fs = __webpack_require__(747)
 const core = __webpack_require__(470)
 const exec = __webpack_require__(986)
 const tc = __webpack_require__(533)
@@ -6488,6 +6498,10 @@ async function downloadExtractAndSetPATH(ruby) {
   const newPath = setupPath(msys2, rubyPrefix)
   core.exportVariable('PATH', newPath)
 
+  if (!fs.existsSync(`${rubyPrefix}\\bin\\bundle.cmd`)) {
+    await exec.exec(`${rubyPrefix}\\bin\\gem install bundler -v "~> 1" --no-document`)
+  }
+
   return rubyPrefix
 }
 
@@ -6516,7 +6530,7 @@ function setupPath(msys2, rubyPrefix) {
   path = path.filter(e => !e.match(/\bRuby\b/))
 
   // Add MSYS2 in PATH
-  path.unshift(`${msys2}\\mingw64`, `${msys2}\\usr`)
+  path.unshift(`${msys2}\\mingw64\\bin`, `${msys2}\\usr\\bin`)
 
   // Add the downloaded Ruby in PATH
   path.unshift(`${rubyPrefix}\\bin`)

index.js

@@ -18,6 +18,10 @@ async function run() {
     if (platform === 'windows-latest') {
       rubyPrefix = await windows.downloadExtractAndSetPATH(ruby)
     } else {
+      if (ruby.startsWith('jruby')) {
+        // Workaround for https://github.com/actions/virtual-environments/issues/242
+        core.exportVariable('CLASSPATH', '')
+      }
       rubyPrefix = await downloadAndExtract(platform, ruby)
       core.addPath(`${rubyPrefix}/bin`)
     }
@@ -47,6 +51,11 @@ async function getLatestReleaseTag() {
 }
 
 async function getRubyEngineAndVersion(rubyVersion) {
+  if (rubyVersion === '.ruby-version') { // Read from .ruby-version
+    rubyVersion = fs.readFileSync('.ruby-version', 'utf8').trim()
+    console.log(`Using ${rubyVersion} as input from file .ruby-version`)
+  }
+
   let engine, version
   if (rubyVersion.match(/^\d+/)) { // X.Y.Z => ruby-X.Y.Z
     engine = 'ruby'

windows.js

@@ -1,6 +1,7 @@
 // Most of this logic is from
 // https://github.com/MSP-Greg/actions-ruby/blob/master/lib/main.js
 
+const fs = require('fs')
 const core = require('@actions/core')
 const exec = require('@actions/exec')
 const tc = require('@actions/tool-cache')
@@ -26,6 +27,10 @@ export async function downloadExtractAndSetPATH(ruby) {
   const newPath = setupPath(msys2, rubyPrefix)
   core.exportVariable('PATH', newPath)
 
+  if (!fs.existsSync(`${rubyPrefix}\\bin\\bundle.cmd`)) {
+    await exec.exec(`${rubyPrefix}\\bin\\gem install bundler -v "~> 1" --no-document`)
+  }
+
   return rubyPrefix
 }
 
@@ -54,7 +59,7 @@ function setupPath(msys2, rubyPrefix) {
   path = path.filter(e => !e.match(/\bRuby\b/))
 
   // Add MSYS2 in PATH
-  path.unshift(`${msys2}\\mingw64`, `${msys2}\\usr`)
+  path.unshift(`${msys2}\\mingw64\\bin`, `${msys2}\\usr\\bin`)
 
   // Add the downloaded Ruby in PATH
   path.unshift(`${rubyPrefix}\\bin`)