code: def test_null_to_p_float_1_tailed_uppper_tailed(
      test_values, expected_p_value, null
  ):
      """Test null_to_p with single float input upper-tailed."""
      assert math.isclose(
          _utils.null_to_p(test_values, null, alternative="larger"),
          expected_p_value,
      )
  
imports: import math
  import numpy
  import pytest
  from numpy.testing import assert_array_almost_equal
  from scipy.ndimage import generate_binary_structure
  from nilearn.mass_univariate import _utils
  from nilearn.mass_univariate.tests._testing import get_tvalue_with_alternative_library
label_desc: Use image node_id 5 for calling a global function with example usage: test_null_to_p_float_1_tailed_uppper_tailed(test_values, expected_p_value, null) without return types