code: def test_Rintercept():
      x = F.Term("x")
      y = F.Term("x")
      xf = x.formula
      yf = y.formula
      newf = (xf + F.I) * (yf + F.I)
      assert set(newf.terms) == {x, y, x * y, sympy.Number(1)}
  
imports: from warnings import catch_warnings, simplefilter
  import numpy
  import pytest
  import sympy
  from numpy.core.records import fromrecords
  from numpy.testing import assert_almost_equal, assert_array_equal
  from sympy.utilities.lambdify import implemented_function
  from nipy.utils import VisibleDeprecationWarning
  from ..None import formulae
  from ..formulae import Term, terms
label_desc: Use image node_id 25 for calling a global function with example usage: test_Rintercept() without return types