code: def test_gpuarray_cai(self):
      a = np.zeros(10, dtype=np.float32)
      a_g = gpuarray.to_gpu(a)
      cai = a_g.__cuda_array_interface__
      ptr = cai["data"][0]
      masked = cai["data"][1]
  
      assert cai["shape"] == a.shape
      assert cai["strides"] == a.strides
      assert cai["typestr"] == a.dtype.str
      assert isinstance(ptr, int)
      assert ptr != 0
      assert not masked
      assert cai["stream"] is None
      assert cai["version"] == 3
  
imports: import numpy
  import numpy.linalg
  from pycuda.tools import mark_cuda_test, dtype_to_ctype
  import pytest
  import pycuda.gpuarray
  import pycuda.driver
  from pycuda.compiler import SourceModule
label_desc: Use image node_id 7 for calling the TestDriver obj's underlying member method code with example usage: obj.test_gpuarray_cai() without return types