Introduce SimpleCovEnv singleton helper and use it

features/support/env.rb

-require_relative '../../spec/simplecov_env'
-SimpleCov.start if ENV['SIMPLECOV']
+require './spec/simplecov_env'
+SimpleCovEnv.start!
 
 ENV['RAILS_ENV'] = 'test'
 require './config/environment'

scripts/merge-simplecov

 #!/usr/bin/env ruby
 
-require 'simplecov'
+require_relative '../spec/simplecov_env'
+SimpleCovEnv.configure_profile
 
 module SimpleCov
   module ResultMerger
@@ -26,10 +27,4 @@ module SimpleCov
   end
 end
 
-# Ignore CI environment
-ENV['CI'] = nil
-ENV['CI_BUILD_NAME'] = nil
-
-require_relative '../spec/simplecov_env'
-
 SimpleCov::ResultMerger.merged_result.format!

spec/simplecov_env.rb

 require 'simplecov'
 
-SimpleCov.configure do
-  load_profile 'test_frameworks'
-  track_files '{app,lib}/**/*.rb'
+module SimpleCovEnv
+  extend self
+
+  def start!
+    return unless ENV['SIMPLECOV']
+
+    configure_profile
+    configure_job
 
+    SimpleCov.start
+  end
+
+  def configure_job
+    SimpleCov.configure do
       if ENV['CI_BUILD_NAME']
         coverage_dir "coverage/#{ENV['CI_BUILD_NAME']}"
         command_name ENV['CI_BUILD_NAME']
@@ -16,6 +26,13 @@ SimpleCov.configure do
           SimpleCov.result
         end
       end
+    end
+  end
+
+  def configure_profile
+    SimpleCov.configure do
+      load_profile 'test_frameworks'
+      track_files '{app,lib}/**/*.rb'
 
       add_filter '/vendor/ruby/'
       add_filter 'config/initializers/'
@@ -32,4 +49,6 @@ SimpleCov.configure do
       add_group 'Validators', 'app/validators'
 
       merge_timeout 7200
+    end
+  end
 end

spec/spec_helper.rb

-require_relative 'simplecov_env'
-SimpleCov.start if ENV['SIMPLECOV']
+require './spec/simplecov_env'
+SimpleCovEnv.start!
 
 ENV["RAILS_ENV"] ||= 'test'