code: def test_device_cache(self):
      @jit.rawkernel()
      def f(x, y):
          tid = jit.threadIdx.x + jit.blockDim.x * jit.blockIdx.x
          y[tid] = x[tid]
  
      with device.Device(0):
          x = testing.shaped_random((30,), dtype=numpy.int32, seed=0)
          y = testing.shaped_random((30,), dtype=numpy.int32, seed=1)
          f((5,), (6,), (x, y))
          assert bool((x == y).all())
      with device.Device(1):
          x = testing.shaped_random((30,), dtype=numpy.int32, seed=2)
          y = testing.shaped_random((30,), dtype=numpy.int32, seed=3)
          f((5,), (6,), (x, y))
          assert bool((x == y).all())
  
imports: import numpy
  import pytest
  import cupy
  from cupyx import jit
  from cupy import testing
  from cupy.cuda import device
  from cupy.cuda import runtime
label_desc: Use image node_id 48 for calling the TestRaw obj's underlying member method code with example usage: obj.test_device_cache() without return types