code: def test_histogram_insufficient_bins(self):
      with self.assertRaisesRegex(
          RuntimeError,
          "Number of bins must be greater than or equal to 1.",
      ):
          self._run_single_op_net([np.random.rand(111)], 0)
  
imports: import unittest
  import caffe2.python.hypothesis_test_util
  import hypothesis.strategies
  import numpy
  from caffe2.python import core, workspace
  from hypothesis import given, settings
label_desc: Use image node_id 13 for calling the TestSelfBinningHistogramBase obj's underlying member method code with example usage: obj.test_histogram_insufficient_bins() without return types