Add code coverage tooling

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 - Special handling of attempts to run the `arduino_ci.rb` CI script against the ruby library instead of an actual Arduino project
 - Explicit checks for attemping to test `arduino_ci` itself as if it were a library, resolving a minor annoyance to this developer.
+- Code coverage tooling
 
 ### Changed
 - Arduino backend is now `arduino-cli` version `0.13.0`

Gemfile

@@ -4,3 +4,10 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in arduino_ci.gemspec
 gemspec
+
+gem "bundler", "> 1.15", require: false, group: :test
+gem "keepachangelog_manager", "~> 0.0.2", require: false, group: :test
+gem "rspec", "~> 3.0", require: false, group: :test
+gem 'rubocop', '~>0.59.0', require: false, group: :test
+gem 'simplecov', require: false, group: :test
+gem 'yard', '~>0.9.11', require: false, group: :test

arduino_ci.gemspec

@@ -27,10 +27,4 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "os", "~> 1.0"
   spec.add_dependency "rubyzip", "~> 1.2"
-
-  spec.add_development_dependency "bundler", "> 1.15"
-  spec.add_development_dependency "keepachangelog_manager", "~> 0.0.2"
-  spec.add_development_dependency "rspec", "~> 3.0"
-  spec.add_development_dependency 'rubocop', '~>0.59.0'
-  spec.add_development_dependency 'yard', '~>0.9.11'
 end

spec/spec_helper.rb

@@ -1,3 +1,7 @@
+require 'simplecov'
+SimpleCov.start do
+  add_filter %r{^/spec/}
+end
 require "bundler/setup"
 require "arduino_ci"