activesupport/test/core_ext/object_and_class_ext_test.rb


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require 'test/unit'
require File.dirname(__FILE__) + '/../../lib/active_support/core_ext/object_and_class'

class ClassA; end
class ClassB < ClassA; end
class ClassC < ClassB; end
class ClassD < ClassA; end

class ClassExtTest < Test::Unit::TestCase
  def test_methods
    assert defined?(ClassB)
    assert defined?(ClassC)
    assert defined?(ClassD)

    ClassA.remove_subclasses

    assert !defined?(ClassB)
    assert !defined?(ClassC)
    assert !defined?(ClassD)
  end
end