ft: adds codecov support

Gemfile.lock

@@ -33,10 +33,13 @@ GEM
     ast (2.4.2)
     builder (3.2.4)
     byebug (11.1.3)
+    codecov (0.6.0)
+      simplecov (>= 0.15, < 0.22)
     coderay (1.1.3)
     concurrent-ruby (1.1.9)
     crass (1.0.6)
     diff-lcs (1.5.0)
+    docile (1.4.0)
     erubi (1.10.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
@@ -116,6 +119,12 @@ GEM
     rubocop-rspec (2.9.0)
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.4)
     sqlite3 (1.4.2)
     thor (1.2.1)
     tzinfo (2.0.4)
@@ -127,6 +136,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  codecov
   normalizy!
   pry-byebug
   rspec-rails

normalizy.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'activerecord', '>= 4.1'
 
+  spec.add_development_dependency 'codecov'
   spec.add_development_dependency 'pry-byebug'
   spec.add_development_dependency 'rspec-rails'
   spec.add_development_dependency 'rubocop-performance'

spec/support/coverage.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+if ENV['COVERAGE'] == 'true'
+  require 'simplecov'
+  require 'codecov'
+
+  SimpleCov.formatter = SimpleCov::Formatter::Codecov
+
+  SimpleCov.minimum_coverage(ENV.fetch('MINIMUM_COVERAGE', 80).to_i)
+
+  SimpleCov.start('rails') do
+    add_filter [
+      '/lib/generators',
+      '/vendor',
+      '/lib/normalizy/version.rb',
+    ]
+  end
+end