Include module in all MiniTest tests like in RSpec

Question

In RSpec I could create helper modules in /spec/support/...

module MyHelpers
  def help1
    puts \"hi\"
  end
end

and include it

Answer 1

One thing I will do is create my own Test class inheriting from Minitest::Test. This allows me to do any sort of configuration on my base test class and keeping it isolated to my own project¹.

# test_helper.rb
include 'helpers/my_useful_module'
module MyGem
  class Test < Minitest::Test
    include MyUsefulModule
  end
end

# my_test.rb
include 'test_helper'
module MyGem
  MyTest < Test
  end
end

¹ This is most likely unneeded, but I like keeping all my gem code isolated.