docstr: Test when train or test samples are zero.
docstr_tok: ["Test","when","train","or","test","samples","are","zero","."]
code: def test_edge_cases_for_zero_samples(self):
      """Test when train or test samples are zero."""
      (x_train, _), (x_test, _) = test_utils.get_test_data(
          0, self.test_samples, self.input_shape, self.num_classes
      )
      self.assertEqual(len(x_train), 0)
  
      (x_train, _), (x_test, _) = test_utils.get_test_data(
          self.train_samples, 0, self.input_shape, self.num_classes
      )
      self.assertEqual(len(x_test), 0)
  
imports: import numpy
  from absl.testing import parameterized
  from keras.testing import test_case
  from keras.testing import test_utils
label_desc: Use image node_id 3 for calling the GetTestDataTest obj's underlying member method code with example usage: obj.test_edge_cases_for_zero_samples() without return types