code: def test_validate_contraction_modes():
      """Test _validate_contraction_modes"""
      shape1 = (3, 4, 5, 2, 2, 4)
      shape2 = (3, 3, 5, 2, 3, 4)
  
      true_modes1 = [0, 1, 4]
      true_modes2 = [1, 5, 3]
      modes = ((0, 1, 4), (1, 5, 3))
      modes1, modes2 = _validate_contraction_modes(
          shape1, shape2, modes, batched_modes=False
      )
      assert_(
          (true_modes1, true_modes2) == (modes1, modes2),
          f"Got ({modes1}, {modes2}), but expected ({true_modes1}, {true_modes2}).",
      )
  
      true_batched_modes1 = [0, 2]
      true_batched_modes2 = [0, 2]
      modes = ((0, 2), (0, 2))
      batched_modes1, batched_modes2 = _validate_contraction_modes(
          shape1, shape2, modes, batched_modes=True
      )
      assert_(
          (true_batched_modes1, true_batched_modes2)
          == (batched_modes1, batched_modes2),
          f"Got ({batched_modes1}, {batched_modes2}), but expected ({true_batched_modes1}, {true_batched_modes2}).",
      )
  
      true_batched_modes1 = [0, 2, 5]
      true_batched_modes2 = [0, 2, 5]
      modes = (0, 2, 5)
      batched_modes1, batched_modes2 = _validate_contraction_modes(
          shape1, shape2, modes, batched_modes=True
      )
      assert_(
          (true_batched_modes1, true_batched_modes2)
          == (batched_modes1, batched_modes2),
          f"Got ({batched_modes1}, {batched_modes2}), but expected ({true_batched_modes1}, {true_batched_modes2}).",
      )
  
      true_batched_modes1 = [0]
      true_batched_modes2 = [0]
      modes = 0
      batched_modes1, batched_modes2 = _validate_contraction_modes(
          shape1, shape2, modes, batched_modes=True
      )
      assert_(
          (true_batched_modes1, true_batched_modes2)
          == (batched_modes1, batched_modes2),
          f"Got ({batched_modes1}, {batched_modes2}), but expected ({true_batched_modes1}, {true_batched_modes2}).",
      )
  
      # Check that negative dims are made positive
      true_modes1 = [0, 4, 5]
      true_modes2 = [1, 3, 5]
      modes = ((0, -2, -1), (1, -3, -1))
      modes1, modes2 = _validate_contraction_modes(
          shape1, shape2, modes, batched_modes=False
      )
      assert_(
          (true_modes1, true_modes2) == (modes1, modes2),
          f"Got ({modes1}, {modes2}), but expected ({true_modes1}, {true_modes2}).",
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_validate_contraction_modes() without return types