code: def test_link_func_monoclassification_21():
      predictions = np.array([[1.0], [1.0]])
      expected = np.array([-np.inf, -np.inf])
      result = link_func(predictions, "monoclassification")
      assert np.array_equal(result, expected)
  
imports: import numpy
  import pytest
  from interpret.utils import link_func, inv_link
label_desc: Use image node_id 4 for calling a global function with example usage: test_link_func_monoclassification_21() without return types