code: def test_broadcast_arrays():
      # Test user defined dtypes
      a = np.array([(1, 2, 3)], dtype="u4,u4,u4")
      b = np.array([(1, 2, 3), (4, 5, 6), (7, 8, 9)], dtype="u4,u4,u4")
      result = np.broadcast_arrays(a, b)
      assert_equal(
          result[0],
          np.array([(1, 2, 3), (1, 2, 3), (1, 2, 3)], dtype="u4,u4,u4"),
      )
      assert_equal(
          result[1],
          np.array([(1, 2, 3), (4, 5, 6), (7, 8, 9)], dtype="u4,u4,u4"),
      )
  
imports: import sys
  import numpy
  import numpy._core.umath
  from numpy._core._rational_tests import rational
  import pytest
  from numpy.testing import assert_, assert_equal, assert_array_equal, assert_raises, assert_warns, HAS_REFCOUNT
label_desc: Use image node_id 16 for calling a global function with example usage: test_broadcast_arrays() without return types