actually, we only need to disable SimpleCov

Author: korny

rake_tasks/test.rake

@@ -79,9 +79,7 @@ Please rename or remove it and run again to use the GitHub repository:
   end
 end
 
-unless RUBY_VERSION[/^2.3/]
-  require 'rspec/core/rake_task'
-  RSpec::Core::RakeTask.new(:spec)
-end
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:spec)
 
 task :test => %w(test:functional test:units test:exe spec)

spec/spec_helper.rb

@@ -1,5 +1,7 @@
-require 'simplecov'
-SimpleCov.start
+unless RUBY_VERSION[/^2.3/]
+  require 'simplecov'
+  SimpleCov.start
+end
 
 # This file was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.