code: def test_constructor(self):
      index = faiss.IndexIVFSpectralHash(
          faiss.IndexFlat(10), 10, 20, 10, 1
      )
      gc.collect()
      index.quantizer.ntotal
  
imports: import numpy
  import unittest
  import gc
  import faiss
  from faiss.contrib import factory_tools
  from faiss.contrib import datasets
label_desc: Use image node_id 1 for calling the TestIVFSpectralHashOwnership obj's underlying member method code with example usage: obj.test_constructor() without return types