# Not ISO specified

assert('GC.enable') do
  assert_false GC.disable
  assert_true GC.enable
  assert_false GC.enable
end

assert('GC.disable') do
  begin
    assert_false GC.disable
    assert_true GC.disable
  ensure
    GC.enable
  end
end

assert('GC.interval_ratio=') do
  origin = GC.interval_ratio
  begin
    assert_equal 150, (GC.interval_ratio = 150)
  ensure
    GC.interval_ratio = origin
  end
end

assert('GC.step_ratio=') do
  origin = GC.step_ratio
  begin
    assert_equal 150, (GC.step_ratio = 150)
  ensure
    GC.step_ratio = origin
  end
end

assert('GC.generational_mode=') do
  origin = GC.generational_mode
  begin
    assert_false (GC.generational_mode = false)
    assert_true (GC.generational_mode = true)
    assert_true (GC.generational_mode = true)
  ensure
    GC.generational_mode = origin
  end
end