code: def test_copy(dtype):
      copy = _copy_memview[_numpy_to_cython(dtype)]
  
      rng = np.random.RandomState(0)
      x = rng.random_sample(10).astype(dtype, copy=False)
      y = np.empty_like(x)
  
      expected = x.copy()
      copy(x, y)
  
      assert_allclose(y, expected, rtol=RTOL[dtype])
  
file_path: scikit-learn/sklearn/utils/tests/test_cython_blas.py
imports: import numpy
  import pytest
  from sklearn.utils._cython_blas import ColMajor, NoTrans, RowMajor, Trans, _asum_memview, _axpy_memview, _copy_memview, _dot_memview, _gemm_memview, _gemv_memview, _ger_memview, _nrm2_memview, _rot_memview, _rotg_memview, _scal_memview
  from sklearn.utils._testing import assert_allclose
label_desc: Use image node_id 7 for calling a global function with example usage: test_copy(dtype) without return types