module ActiveSupport::Testing::Isolation

def self.forking_env?
  !ENV["NO_FORK"] && ((RbConfig::CONFIG['host_os'] !~ /mswin|mingw/) && (RUBY_PLATFORM !~ /java/))
end

def self.included(base)
  if defined?(::MiniTest) && base < ::MiniTest::Unit::TestCase
    base.send :include, MiniTest
  elsif defined?(Test::Unit)
    base.send :include, TestUnit
  end
end

def _run_class_setup      # class setup method should only happen in parent
  unless defined?(@@ran_class_setup) || ENV['ISOLATION_TEST']
    self.class.setup if self.class.respond_to?(:setup)
    @@ran_class_setup = true
  end
end