docstr: check dest cvec is still reachable after source was deleted 
docstr_tok: ["check","dest","cvec","is","still","reachable","after","source","was","deleted"]
code: def test_assign_cvec_with_other_cvec(self):
      """check dest cvec is still reachable after source was deleted"""
      spec = cvec(1024)
      a = np.random.rand(1024 // 2 + 1).astype(float_type)
      b = np.random.rand(1024 // 2 + 1).astype(float_type)
      spec.norm = a
      spec.phas = b
      new_spec = spec
      del spec
      assert_equal(a, new_spec.norm)
      assert_equal(b, new_spec.phas)
      assert_equal(id(a), id(new_spec.norm))
      assert_equal(id(b), id(new_spec.phas))
  
imports: import numpy
  from numpy.testing import TestCase, assert_equal
  from aubio import cvec, fvec, float_type
label_desc: Use image node_id 6 for calling the aubio_cvec_test_case obj's underlying member method code with example usage: obj.test_assign_cvec_with_other_cvec() without return types