code: def test_empty(self):
      a, b = histogram([], bins=([0, 1]))
      assert_array_equal(a, np.array([0]))
      assert_array_equal(b, np.array([0, 1]))
  
imports: import functools
  from unittest import expectedFailure, skipIf
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, slowTest, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 12 for calling the TestHistogram obj's underlying member method code with example usage: obj.test_empty() without return types