} {
			if !containsStack(stks, want) {
				t.Errorf("No matching stack entry for %+v", want)
			}
		}

		i := 0
		for ; i < len(p.SampleType); i++ {
			if p.SampleType[i].Unit == "nanoseconds" {
				break
			}
		}
		if i >= len(p.SampleType) {
			t.Fatalf("profile did not contain nanoseconds sample")
		}
		total := int64(0)
		for _, s := range p.Sample {
			total += s.Value[i]
		}