code: def test_interpolateArray_order1():
      check_interpolateArray(order=1)
  
imports: from collections import OrderedDict
  from copy import deepcopy
  import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal
  import pyqtgraph
  from pyqtgraph.functions import arrayToQPath, eq
  from pyqtgraph.Qt import QtGui
label_desc: Use image node_id 3 for calling a global function with example usage: test_interpolateArray_order1() without return types