rails_generators_bug.rb

# Activate the gem you are reporting the issue against.
gem 'railties', '4.1.0.rc1'

require 'minitest/autorun'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

class BugTest < Minitest::Test
  def test_require_statements
    require 'rails/generators'
    require 'rails/generators/migration' # raises error
  end
end