code: def test_2d_contiguous(self, dtype):
      a = cupy.zeros((4, 7), dtype=dtype)
      itemsize = a.itemsize
      a_low = a.data.ptr
      a_high = a.data.ptr + 4 * 7 * itemsize
      assert cupy.byte_bounds(a) == (a_low, a_high)
  
file_path: cupy/tests/cupy_tests/misc_tests/test_byte_bounds.py
imports: import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestByteBounds obj's underlying member method code with example usage: obj.test_2d_contiguous(dtype) without return types