code: def test_empty_matrix_input(self):
      # handle gh-11082
      A = np.zeros((0, 0))
      result = cx_linalg.expm(A)
      assert result.size == 0
  
file_path: cupy/tests/cupyx_tests/scipy_tests/linalg_tests/test_matfuncs.py
imports: import numpy
  from numpy import linalg
  import cupy
  from cupyx.scipy.linalg import khatri_rao
  from cupyx.scipy import linalg
  import pytest
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestExpM obj's underlying member method code with example usage: obj.test_empty_matrix_input() without return types