Test on Ruby 3.4.12; declare rexml dependency

.github/workflows/test.yml

@@ -0,0 +1,17 @@
+name: test
+on:
+  push:
+    branches: [master]
+  pull_request:
+jobs:
+  rspec:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install ImageMagick
+        run: sudo apt-get update && sudo apt-get install -y imagemagick
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+      - run: bundle exec rspec

.ruby-version

@@ -1 +1 @@
-2.7.8
+3.4.12

Gemfile.lock

@@ -4,6 +4,7 @@ PATH
     lambda_convert (1.0.0)
       aws-sdk-lambda (~> 1.0)
       aws-sdk-s3 (~> 1.0)
+      rexml (~> 3.2)
 
 GEM
   remote: https://rubygems.org/
@@ -30,22 +31,23 @@ GEM
     aws-sigv4 (1.11.0)
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.2.0)
-    diff-lcs (1.2.5)
+    diff-lcs (1.6.2)
     jmespath (1.6.2)
     logger (1.6.6)
-    rspec (3.3.0)
-      rspec-core (~> 3.3.0)
-      rspec-expectations (~> 3.3.0)
-      rspec-mocks (~> 3.3.0)
-    rspec-core (3.3.2)
-      rspec-support (~> 3.3.0)
-    rspec-expectations (3.3.1)
+    rexml (3.4.4)
+    rspec (3.13.2)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.6)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.5)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.3.0)
-    rspec-mocks (3.3.2)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.8)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.3.0)
-    rspec-support (3.3.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.7)
 
 PLATFORMS
   ruby
@@ -55,4 +57,4 @@ DEPENDENCIES
   rspec
 
 BUNDLED WITH
-   1.17.3
+   2.6.9

lambda_convert.gemspec

@@ -15,4 +15,6 @@ Gem::Specification.new do |s|
   s.license     = 'MIT'
   s.add_runtime_dependency 'aws-sdk-lambda', '~> 1.0'
   s.add_runtime_dependency 'aws-sdk-s3', '~> 1.0'
+  # aws-sdk-s3 needs an XML parser; REXML is a bundled (not default) gem since Ruby 3.0
+  s.add_runtime_dependency 'rexml', '~> 3.2'
 end

spec/cli_spec.rb

@@ -45,7 +45,10 @@
     end
   end
 
-  context 'simple lambda resize' do
+  # Requires real AWS credentials for the Lambda function and S3 bucket in
+  # LambdaConvert::Config; set LAMBDA_CONVERT_INTEGRATION=1 to run it.
+  context 'simple lambda resize',
+          skip: (ENV['LAMBDA_CONVERT_INTEGRATION'] == '1' ? false : 'needs AWS credentials') do
     let(:tempfile) { Tempfile.new('output') }
     subject do
       Open3.capture2(