chore: add Rakefile as alternative CI tooling

.github/workflows/rake_ci.yml

@@ -0,0 +1,33 @@
+name: Rake CI
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  Rake-CI:
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        ruby: ["3.4"]
+      fail-fast: false
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v4
+    - name: Install Ruby ${{ matrix.ruby }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: "${{ matrix.ruby }}"
+        bundler-cache: true
+    - name: Install NodeJS 18.x
+      uses: actions/setup-node@v4
+      with:
+        node-version: "18.x"
+    - name: Run all Rake tasks
+      shell: bash
+      run: bundle exec rake ci

.rubocop.yml

@@ -6,6 +6,7 @@ AllCops:
     - "integration/**/*"
     - "spec/**/*"
     - "test/**/*"
+    - "vendor/**/*"
 Metrics/BlockLength:
   Exclude:
     - "googleauth.gemspec"

.tool-versions

@@ -0,0 +1,2 @@
+ruby 3.4.9
+nodejs 25.9.0

Gemfile

@@ -11,8 +11,10 @@ gem "logging", "~> 2.0"
 gem "minitest", "~> 5.14"
 gem "minitest-focus", "~> 1.1"
 gem "rack-test", "~> 2.0"
+gem "rake", "~> 13.0"
 gem "redcarpet", "~> 3.0"
 gem "redis", ">= 4.0", "< 6"
 gem "rspec", "~> 3.0"
+gem "rubocop-rspec"
 gem "webmock", "~> 3.8"
 gem "yard", "~> 0.9"

Rakefile

@@ -0,0 +1,105 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require "rake/testtask"
+require "rspec/core/rake_task"
+require "rubocop/rake_task"
+require "yard"
+require "multi_json"
+
+# Helper to print files
+def print_files pattern
+  files = Dir.glob pattern
+  puts "Matched #{files.size} files."
+  files.each { |f| puts "  #{f}" } if Rake.application.options.trace
+end
+
+Rake::TestTask.new :minitest_run do |t|
+  t.libs << "test"
+  t.pattern = "test/**/*_test.rb"
+  t.warning = true
+end
+
+desc "Run Minitest tests"
+task :test do
+  puts "--- Starting Minitest tests ---"
+  print_files "test/**/*_test.rb"
+  Rake::Task[:minitest_run].invoke
+  puts "--- Finished Minitest tests ---"
+end
+
+RSpec::Core::RakeTask.new :rspec_run do |t|
+  t.rspec_opts = "-Ilib -Ispec"
+end
+
+desc "Run RSpec specs"
+task :spec do
+  puts "--- Starting RSpec specs ---"
+  print_files "spec/**/*_spec.rb"
+  Rake::Task[:rspec_run].invoke
+  puts "--- Finished RSpec specs ---"
+end
+
+RuboCop::RakeTask.new :rubocop_run
+
+desc "Run RuboCop checks"
+task :rubocop do
+  puts "--- Starting RuboCop checks ---"
+  Rake::Task[:rubocop_run].invoke
+  puts "--- Finished RuboCop checks ---"
+end
+
+Rake::TestTask.new :integration_run do |t|
+  t.libs << "integration"
+  t.pattern = "integration/**/*_test.rb"
+  t.warning = true
+end
+
+desc "Run integration tests"
+task :integration do
+  puts "--- Starting integration tests ---"
+  print_files "integration/**/*_test.rb"
+  Rake::Task[:integration_run].invoke
+  puts "--- Finished integration tests ---"
+end
+
+desc "Build the gem"
+task :build do
+  puts "--- Starting gem build ---"
+  sh "gem build googleauth.gemspec"
+  puts "--- Finished gem build ---"
+end
+
+YARD::Config.options[:generate_output_flag] = true
+YARD::Rake::YardocTask.new :yardoc_run
+
+desc "Generate documentation"
+task :yardoc do
+  puts "--- Starting documentation generation ---"
+  Rake::Task[:yardoc_run].invoke
+  puts "--- Finished documentation generation ---"
+end
+
+desc "Run Link checks"
+task linkinator: :yardoc do
+  puts "--- Starting link checks ---"
+  sh "npx -y linkinator ./doc --skip stackoverflow.com"
+  puts "--- Finished link checks ---"
+end
+
+desc "Run all CI tasks"
+task ci: [:test, :spec, :rubocop, :integration, :build, :yardoc, :linkinator]
+
+# Default task
+task default: [:test, :spec, :rubocop]