code: def make_test_hstack_data():
      a = np.array([1, 2, 3])
      b = np.array([2, 3, 4])
      yield a, b
  
      a = np.array([[1], [2], [3]])
      b = np.array([[2], [3], [4]])
      yield a, b
  
      empty = np.array([], np.int64).reshape((3, 0))
      yield a, empty
      yield empty, a
  
imports: import math
  import numpy
  import re
  from ..helpers import *
  import pytest
  from hail.utils.java import FatalError, HailUserError
label_desc: Use image node_id 40 for calling a global function with example usage: make_test_hstack_data() without return types