clk := testclock.NewFakePassiveClock(now)
	th := NewTestableTimingRatioHistogram(clk.Now,
		&TimingRatioHistogramOpts{
			compbasemetrics.TimingHistogramOpts{
				Namespace: "testns",
				Subsystem: "testsubsys",
				Name:      "testhist",
				Help:      "Me",
				Buckets:   []float64{1, 2, 4, 8, 16, 32},
			},
			1})
	registry := compbasemetrics.NewKubeRegistry()
	registry.MustRegister(th)
	var x int

	if got := s1.Len(); got != 3 {
		panic(fmt.Sprintf("(%v).Len() == %d, want 3", s1, got))
	}
	s2.Add(1)
	if !a.Equal(s1, s2) {
		panic(fmt.Sprintf("a.Equal(%v, %v) = false, want true", s1, s2))
	}
}

func TestSubSet() {
	s1 := a.Make[int]()
	s1.Add(1)
	s1.Add(2)
	s2 := a.Make[int]()
	s2.Add(2)
	s2.Add(3)
	s1.SubSet(s2)
	if got := s1.Len(); got != 1 {
		panic(fmt.Sprintf("(%v).Len() == %d, want 1", s1, got))
	}

		panic(fmt.Sprintf("(%v).Len() == %d, want 3", s1, got))
	}
	s2.Add(1)
	if !_Equal(s1, s2) {
		panic(fmt.Sprintf("_Equal(%v, %v) = false, want true", s1, s2))
	}
}

func TestSubSet() {
	s1 := _Make[int]()
	s1.Add(1)
	s1.Add(2)
	s2 := _Make[int]()
	s2.Add(2)
	s2.Add(3)
	s1.SubSet(s2)
	if got := s1.Len(); got != 1 {
		panic(fmt.Sprintf("(%v).Len() == %d, want 1", s1, got))