docstr: vector input -> vector output
docstr_tok: ["vector","input","-",">","vector","output"]
code: def test_vector(self):
      "vector input -> vector output"
      assert_array_almost_equal(
          np.array([0.10679889, 0.06550009, 0.01730145]),
          psturng(
              [3.98832389, 4.56835318, 6.26400894], [4, 4, 4], [6, 6, 6]
          ),
          5,
      )
  
imports: from statsmodels.compat.python import lzip, lmap
  from numpy.testing import assert_equal, assert_almost_equal, assert_array_almost_equal, assert_raises
  import numpy
  import pytest
  from statsmodels.stats.libqsturng import qsturng, psturng
label_desc: Use image node_id 2 for calling the TestPsturng obj's underlying member method code with example usage: obj.test_vector() without return types