require library after we load coverage tools so that it is actually covered.

spec/spec_helper.rb

@@ -1,5 +1,4 @@
 require "bundler/setup"
-require "database_cleaner-core"
 require "byebug"
 
 if ENV['COVERAGE'] == 'true'
@@ -15,6 +14,8 @@ if ENV['COVERAGE'] == 'true'
   puts "required simplecov"
 end
 
+require "database_cleaner-core"
+
 RSpec.configure do |config|
   # These two settings work together to allow you to limit a spec run
   # to individual examples or groups you care about by tagging them with