You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_objectspace.rb
    path of file: ./repos/ruby-packer/ruby/gems/test-unit-3.3.4/test/collector
    
    the code of the file until where you have to start completion: # Author:: Nathaniel Talbott.
# Copyright:: Copyright (c) 2000-2003 Nathaniel Talbott. All rights reserved.
# License:: Ruby license.

require 'test/unit'
require 'test/unit/collector/objectspace'

module Test
  module Unit
    module Collector
      class TC_ObjectSpace < TestCase
        def setup
          @tc1 = Class.new(TestCase) do
            self.test_order = :alpha
    
        def test_filtered_collection
          @c.filter = proc{false}
          assert_equal(empty_suite, @c.collect)

          @c.filter = proc{true}
          assert_equal(full_suite, @c.collect)

          @c.filter = proc{nil}
          assert_equal(full_suite, @c.collect)

          @c.filter = [proc{false}, proc{true}]
          assert_equal(empty_suite, @c.collect)

          @c.filter = [proc{true}, proc{false}]
          assert_equal(empty_suite, @c.collect)

          @c.filter = [proc{nil}, proc{false}]
          assert_equal(empty_suite, @c.collect)

          @c.filter = [proc{nil}, proc{true}]
          assert_equal(full_suite, @c.collect)

          expected = TestSuite.new(ObjectSpace::NAME)
          expected << (TestSuite.new(@tc1.name) << @tc1.new('test_1'))
          expected << (TestSuite.new(@tc2.name) << @tc2.new('test_0'))
          @c.filter = proc{|test| ['test_1', 'test_0'].include?(test.method_name)}
          assert_equal(expected, @c.collect)

          expected = TestSuite.new(ObjectSpace::NAME)
          TestSuite.new(@tc1.name) << @tc1.new('test_1')
          TestSuite.new(@tc2.name) << @tc2.new('test_0')
          @c.filter = [proc{|t| t.method_name == 'test_1' ? true : nil},
                       proc{|t| t.method_name == 'test_0' ? true : nil},
                       proc{false}]
          assert_equal(empty_suite, @c.collect)
        end