message: Update test case and set non-zero imag part of the complex number
  from review comment feedback
diff: @@ -128,8 +128,12 @@ class ExtractImagePatches(test.TestCase):
  def testComplexDataTypes(self):
  """Test for complex data types"""
  for dtype in [np.complex64, np.complex128]:
  - image = np.reshape(range(120), [2, 3, 4, 5]).astype(dtype)
  - patches = np.reshape(range(120), [2, 3, 4, 5]).astype(dtype)
  + image = (
  + np.reshape(range(120), [2, 3, 4, 5]).astype(dtype) +
  + np.reshape(range(120, 240), [2, 3, 4, 5]).astype(dtype) * 1j)
  + patches = (
  + np.reshape(range(120), [2, 3, 4, 5]).astype(dtype) +
  + np.reshape(range(120, 240), [2, 3, 4, 5]).astype(dtype) * 1j)
  for padding in ["VALID", "SAME"]:
  self._VerifyValues(
  image,
  