Add Codacy code coverage reporting with simplecov-cobertura

.github/workflows/ruby.yml

@@ -6,6 +6,7 @@ on:
 
 env:
   CI: true
+  CODACY_PROJECT_NAME: twiglet-ruby
 permissions:
   contents: read
 
@@ -36,3 +37,10 @@ jobs:
     - name: Run example_app
       run: bundle exec ruby example_app.rb
       shell: bash
+    - name: Upload coverage to Codacy
+      if: matrix.ruby-version == '3.4'
+      continue-on-error: true
+      env:
+        CODACY_PROJECT_TOKEN: ${{ secrets.CODACY_PROJECT_TOKEN }}
+      run: bash <(curl -Ls https://coverage.codacy.com/get.sh) report -r coverage/coverage.xml
+      shell: bash

test/test_coverage.rb

@@ -1,11 +1,17 @@
 require 'simplecov'
+require 'simplecov-cobertura'
 
 SimpleCov.start do
   add_filter "/test/"
   add_filter "examples/rack/request_logger_test.rb"
 
   if ENV['CI']
-    formatter SimpleCov::Formatter::SimpleFormatter
+    formatter SimpleCov::Formatter::MultiFormatter.new(
+      [
+        SimpleCov::Formatter::SimpleFormatter,
+        SimpleCov::Formatter::CoberturaFormatter
+      ]
+    )
   else
     formatter SimpleCov::Formatter::MultiFormatter.new(
       [

twiglet.gemspec

@@ -32,6 +32,8 @@ Gem::Specification.new do |gem|
   gem.add_dependency 'json-schema'
   gem.add_development_dependency 'minitest'
   gem.add_development_dependency 'rake'
+  gem.add_development_dependency 'rexml', '~> 3.3.6'
   gem.add_development_dependency 'simplecov', '0.17.1'
+  gem.add_development_dependency 'simplecov-cobertura', '~> 1.4'
   gem.add_development_dependency 'simplycop'
 end