output in json format for simplecov

Author: markburns

Gemfile

@@ -16,4 +16,5 @@ group :test do
   gem "debug"
   gem "rspec", "~> 3.0"
   gem "simplecov", require: false
+  gem "simplecov-json", require: false
 end

Gemfile.lock

@@ -76,6 +76,7 @@ GEM
     irb (1.10.1)
       rdoc
       reline (>= 0.3.8)
+    json (2.7.1)
     minitest (5.20.0)
     mutex_m (0.2.0)
     psych (5.1.1.1)
@@ -104,6 +105,9 @@ GEM
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
+    simplecov-json (0.2.3)
+      json
+      simplecov
     simplecov_json_formatter (0.1.3)
     stringio (3.1.0)
     thor (1.2.2)
@@ -122,6 +126,7 @@ DEPENDENCIES
   rake (~> 13.0)
   rspec (~> 3.0)
   simplecov
+  simplecov-json
 
 BUNDLED WITH
    2.4.22

spec/support/coverage.rb

@@ -1,6 +1,12 @@
 # frozen_string_literal: true
 
-require "simplecov"
+require 'simplecov'
+require 'simplecov-json'
+
+SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new([
+  SimpleCov::Formatter::HTMLFormatter,
+  SimpleCov::Formatter::JSONFormatter
+])
 
 SimpleCov.start do
   add_filter "/spec/"