code: def test_summarize(X, shapes, rates):
      d = Gamma(shapes, rates)
      d.summarize(X[:4])
      assert_array_almost_equal(d._w_sum, [4.0, 4.0, 4.0])
      assert_array_almost_equal(d._xw_sum, [6.1, 5.5, 6.2])
      assert_array_almost_equal(
          d._logx_w_sum, [0.870037, -0.030253, 1.146132]
      )
  
      d.summarize(X[4:])
      assert_array_almost_equal(d._w_sum, [7.0, 7.0, 7.0])
      assert_array_almost_equal(d._xw_sum, [17.1, 9.7, 10.6])
      assert_array_almost_equal(
          d._logx_w_sum, [4.568669, 0.873965, -0.974132]
      )
  
      d = Gamma(shapes, rates)
      d.summarize(X)
      assert_array_almost_equal(d._w_sum, [7.0, 7.0, 7.0])
      assert_array_almost_equal(d._xw_sum, [17.099998, 9.7, 10.599999])
      assert_array_almost_equal(
          d._logx_w_sum, [4.568669, 0.873965, -0.974132]
      )
  
      d = Gamma()
      d.summarize(X[:4])
      assert_array_almost_equal(d._w_sum, [4.0, 4.0, 4.0])
      assert_array_almost_equal(d._xw_sum, [6.1, 5.5, 6.2])
      assert_array_almost_equal(
          d._logx_w_sum, [0.870037, -0.030253, 1.146132]
      )
  
      d.summarize(X[4:])
      assert_array_almost_equal(d._w_sum, [7.0, 7.0, 7.0])
      assert_array_almost_equal(d._xw_sum, [17.1, 9.7, 10.6])
      assert_array_almost_equal(
          d._logx_w_sum, [4.568669, 0.873965, -0.974132]
      )
  
      d = Gamma()
      d.summarize(X)
      assert_array_almost_equal(d._w_sum, [7.0, 7.0, 7.0])
      assert_array_almost_equal(d._xw_sum, [17.099998, 9.7, 10.599999])
      assert_array_almost_equal(
          d._logx_w_sum, [4.568669, 0.873965, -0.974132]
      )
  
imports: import os
  import numpy
  import torch
  import pytest
  from pomegranate.distributions import Gamma
  from ._utils import _test_initialization_raises_two_parameters
  from ._utils import _test_initialization
  from ._utils import _test_predictions
  from ._utils import _test_efd_from_summaries
  from ._utils import _test_raises
  from nose.tools import assert_raises
  from numpy.testing import assert_array_almost_equal
label_desc: Use image node_id 21 for calling a global function with example usage: test_summarize(X, shapes, rates) without return types