t.Error(err)
	}
}

func TestMapMatchesDeepCopy(t *testing.T) {
	if err := quick.CheckEqual(applyMap, applyDeepCopyMap, nil); err != nil {
		t.Error(err)
	}
}

func TestConcurrentRange(t *testing.T) {
	const mapSize = 1 << 10

	m := new(sync.Map)
	for n := int64(1); n <= mapSize; n++ {
		m.Store(n, int64(n))
	}

	done := make(chan struct{})
	var wg sync.WaitGroup