Ruby 4 compat

.github/dependabot.yml

@@ -0,0 +1,7 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/ruby.yml

@@ -0,0 +1,18 @@
+name: Run Specs
+on: [ push, pull_request ]
+
+jobs:
+  unit_specs:
+    strategy:
+      matrix:
+        ruby: ['3.3', '3.4', '4.0', head]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+    - name: run-specs
+      run: |
+        bundle install
+        bundle exec rspec

.gitignore

@@ -1,4 +1,5 @@
 Gemfile.lock
 .idea
 *.gem
+vendor/
 /version

bosh_cpi.gemspec

@@ -13,12 +13,15 @@ Gem::Specification.new do |spec|
   spec.homepage    = 'https://github.com/cloudfoundry/bosh-cpi-ruby/'
   spec.license     = 'Apache 2.0'
   spec.email       = 'support@cloudfoundry.com'
-  spec.required_ruby_version = Gem::Requirement.new('>= 1.9.3')
+  spec.required_ruby_version = Gem::Requirement.new('>= 3.3.0')
 
   spec.files        = Dir['lib/**/*'].select{ |f| File.file? f }
   spec.require_path = 'lib'
 
-  spec.add_dependency 'membrane',    '~>1.1.0'
-  spec.add_dependency 'httpclient',  '~>2.8.3'
-  spec.add_dependency 'rspec'
+  spec.add_dependency 'base64'
+  spec.add_dependency 'logger'
+  spec.add_dependency 'membrane'
+  spec.add_dependency 'httpclient'
+
+  spec.add_development_dependency 'rspec'
 end

spec/unit/cpi/cli_spec.rb

@@ -592,7 +592,9 @@ def make_result_regexp(result,  error = 'null', log_string = 'fake-log')
     context 'when request json cannot be parsed' do
       it 'returns invalid_call error' do
         subject.run('invalid-json')
-        expect(result_io.string).to match(/{"result":null,"error":{"type":"InvalidCall","message":"Request cannot be deserialized, details: unexpected token at 'invalid-json'","ok_to_retry":false},"log":/)
+        ruby_3_json_err = "token at 'invalid-json'"
+        ruby_4_json_err = "character: 'invalid-json' at line 1 column 1"
+        expect(result_io.string).to match(/{"result":null,"error":{"type":"InvalidCall","message":"Request cannot be deserialized, details: unexpected (#{ruby_3_json_err}|#{ruby_4_json_err})","ok_to_retry":false},"log":/)
         expect(result_io.string).to include_the_backtrace
       end
     end