code: def test_combine_true_squeeze_false(self):
      expected = [np.concatenate([self.x, self.y])]
      result = base._squeeze_cat([self.x, self.y], True, False)
      npt.assert_equal(result, expected)
  
imports: import numpy
  import numpy.testing
  import pytest
  from pymc.backends import base, ndarray
  from tests.backends import fixtures
label_desc: Use image node_id 3 for calling the TestSqueezeCat obj's underlying member method code with example usage: obj.test_combine_true_squeeze_false() without return types