Add GitHub Action for RuboCop.

.github/workflows/rubocop.yml

@@ -0,0 +1,31 @@
+name: RuboCop
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "main", "dev/ci", "dev/ci-rubocop" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  analysis:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['2.7', '3.2']
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: RuboCop version information
+      run: bundle exec rubocop -V
+    - name: Run RuboCop
+      run: bundle exec rubocop

.gitignore

@@ -16,6 +16,7 @@
 /archive/
 /build/
 /tests_old/
+/vendor/
 Debug*/
 Release*/
 ipch/

.rubocop.yml

@@ -5,30 +5,20 @@ require:
   - rubocop-sketchup
 
 AllCops:
+  NewCops: disable
   DisabledByDefault: true # TODO: Reenable
   DisplayStyleGuide: true
   SuggestExtensions: false
   SketchUp:
     SourcePath: src
     TargetSketchUpVersion: 2014
-    SketchupPerformance:
-      Exclude:
-      - ruby-c-extension/**/*
-      - skippy/**/*
-      - tests/**/*
-      - tools/**/*
-    SketchupRequirements:
-      Exclude:
-      - ruby-c-extension/**/*
-      - skippy/**/*
-      - tests/**/*
-      - tools/**/*
-    SketchupSuggestions:
-      Exclude:
-      - ruby-c-extension/**/*
-      - skippy/**/*
-      - tests/**/*
-      - tools/**/*
+    Exclude:
+    - Gemfile
+    - ruby-c-extension/**/*
+    - skippy/**/*
+    - tests/**/*
+    - tools/**/*
+    - vendor/**/*
   TargetRubyVersion: 2.0
   Exclude:
   - archive/**/*
@@ -40,6 +30,7 @@ AllCops:
   - src/testup/third-party/**/*.rb
   - tests/**/*.rb # TODO - for now ignore.
   - tools/**/*.rb
+  - vendor/**/*.rb
 
 SketchupDeprecations:
   Enabled: true
@@ -183,6 +174,7 @@ Style/IfUnlessModifier:
 
 Style/MultilineIfModifier:
   Exclude:
+    - Gemfile
     - src/testup/file_reporter.rb
     - src/testup/ui.rb
     - src/testup/ui/adapters/htmldialog.rb

Gemfile

@@ -1,14 +1,23 @@
 source 'https://rubygems.org'
 
+# Even if you configure Bundler to install only one group it will fail if any
+# of the unused groups have dependencies that cannot be resolved.
+# On Ruby 3.2 the Minitest 5.4.3 will fail, so applying this kludge to work
+# around that until Minitest is updated.
+CI_BUILD = ENV['CI']
+
 group :development do
   gem 'colorize', '~> 0.8.1'
   gem 'minitest', '5.4.3'
   gem 'minitest-reporters-json_reporter'
-  gem 'rubocop', '>= 0.82', '< 2.0'
-  gem 'rubocop-sketchup', '~> 1.3.0'
-  gem 'rubocop-performance', '~> 1.15.0'
   gem 'rubyzip', '~> 1.2'
   gem 'sketchup-api-stubs'
   gem 'skippy', '~> 0.5.1.a'
   gem 'solargraph'
+end unless CI_BUILD
+
+group :analytics do
+  gem 'rubocop', '>= 0.82', '< 2.0'
+  gem 'rubocop-sketchup', '~> 1.3.0'
+  gem 'rubocop-performance', '~> 1.15.0'
 end