Use LCOV instead of JSON

Author: otherguy

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
       - name: Run linting
         run: bundle exec rubocop
       - name: Run tests
-        run: bundle exec rspec
+        run: bundle exec rspec spec
 
   # SonarCloud, Codecov, etc.
   external:
@@ -62,7 +62,7 @@ jobs:
       - name: Run linting
         run: bundle exec rubocop --format progress --format json --out rubocop.json
       - name: Run tests
-        run: bundle exec rspec
+        run: bundle exec rspec spec
       # SonarCloud
       - name: SonarCloud Scan
         uses: SonarSource/sonarcloud-github-action@master
@@ -83,4 +83,4 @@ jobs:
         with:
           debug: true
           coverageLocations: |
-            coverage/coverage.json:simplecov
+            coverage/lcov.info:lcov

Gemfile

@@ -8,10 +8,11 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 gemspec
 
 group :development, :test do
-  gem 'bundler',        '~> 2.5.17'
-  gem 'rake',           '~> 13.2.1'
-  gem 'rubocop',        '~> 1.66.1'
-  gem 'simplecov',      '~> 0.22.0'
-  gem 'simplecov-html', '~> 0.12.3'
-  gem 'simplecov-json', '~> 0.2.0'
+  gem 'bundler',        '~> 2.5'
+  gem 'rake',           '~> 13.2'
+  gem 'rubocop',        '~> 1.66'
+  gem 'simplecov',      '~> 0.22'
+  gem 'simplecov-html', '~> 0.12'
+  gem 'simplecov-json', '~> 0.2'
+  gem 'simplecov-lcov', '~> 0.8'
 end

Gemfile.lock

@@ -56,6 +56,7 @@ GEM
     simplecov-json (0.2.3)
       json
       simplecov
+    simplecov-lcov (0.8.0)
     simplecov_json_formatter (0.1.4)
     unicode-display_width (2.5.0)
 
@@ -65,13 +66,14 @@ PLATFORMS
   x86_64-darwin-19
 
 DEPENDENCIES
-  bundler (~> 2.5.17)
-  rake (~> 13.2.1)
+  bundler (~> 2.5)
+  rake (~> 13.2)
   rspec-sonarqube-formatter!
-  rubocop (~> 1.66.1)
-  simplecov (~> 0.22.0)
-  simplecov-html (~> 0.12.3)
-  simplecov-json (~> 0.2.0)
+  rubocop (~> 1.66)
+  simplecov (~> 0.22)
+  simplecov-html (~> 0.12)
+  simplecov-json (~> 0.2)
+  simplecov-lcov (~> 0.8)
 
 BUNDLED WITH
    2.5.17

spec/spec_helper.rb

@@ -3,12 +3,19 @@
 require 'simplecov'
 require 'simplecov-json'
 require 'simplecov-html'
+require 'simplecov-lcov'
+
+SimpleCov::Formatter::LcovFormatter.config do |c|
+  c.single_report_path = 'coverage/lcov.info'
+  c.report_with_single_file = true
+end
 
 # Generate HTML and JSON reports
-SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new([
+SimpleCov.formatters = [
   SimpleCov::Formatter::HTMLFormatter,
-  SimpleCov::Formatter::JSONFormatter
-])
+  SimpleCov::Formatter::JSONFormatter,
+  SimpleCov::Formatter::LcovFormatter
+]
 
 # Code coverage
 SimpleCov.start do