simplecov should be required at first

Author: k-tsj

test/test_helper.rb

@@ -1,14 +1,14 @@
 begin
-  require 'bundler'
-  Bundler.require
-
   if ENV['COVERAGE']
     require 'simplecov'
     SimpleCov.start do
       add_filter '/test/'
       add_filter '/vendor/'
     end
   end
+
+  require 'bundler'
+  Bundler.require
 rescue LoadError
 end