Configure github actions and fix autocorrectable rubocop issues

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI 
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['3.0', '3.1', '3.2', '3.3', ruby-head]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby ${{ matrix.ruby-version }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # 'bundle install' and cache
+    - name: Run specs 
+      run: |
+        bundle exec rspec

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby ${{ matrix.ruby-version }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 2.7 
+        bundler-cache: true # 'bundle install' and cache
+    - name: Run specs 
+      run: |
+        bundle exec rubocop

spec/warden/jwt_auth/strategy_spec.rb

@@ -31,8 +31,8 @@
       end
     end
 
-    context "when issuer is configured" do
-      let(:token) { Warden::JWTAuth::TokenEncoder.new.call({issuer: issuer}) }
+    context 'when issuer is configured' do
+      let(:token) { Warden::JWTAuth::TokenEncoder.new.call({ issuer: issuer }) }
       let(:env) { { 'HTTP_AUTHORIZATION' => "Bearer #{token}" } }
       let(:issuer) { 'http://example.com' }
       let(:strategy) { described_class.new(env, :user) }
@@ -43,14 +43,14 @@
         end
       end
 
-      context "when the issuer claim matches the configured issuer" do
+      context 'when the issuer claim matches the configured issuer' do
         it 'returns true' do
           expect(strategy).to be_valid
         end
       end
 
-      context "when the issuer claim does not match the configured issuer" do
-        let(:token) { Warden::JWTAuth::TokenEncoder.new.call({"iss" => 'http://example.org'}) }
+      context 'when the issuer claim does not match the configured issuer' do
+        let(:token) { Warden::JWTAuth::TokenEncoder.new.call({ 'iss' => 'http://example.org' }) }
 
         it 'returns false' do
           expect(strategy).not_to be_valid

spec/warden/jwt_auth/token_encoder_spec.rb

@@ -68,6 +68,7 @@
 
     context 'with issuer claim' do
       let(:issuer) { 'http://example.com' }
+
       before do
         Warden::JWTAuth.configure do |config|
           config.issuer = issuer