code: def test_fuzzy_group():
      v = [T, F, U]
      for i in product(*[v] * 3):
          assert _fuzzy_group(i) is (
              None
              if None in i
              else (True if all(j for j in i) else False)
          )
          assert _fuzzy_group(i, quick_exit=True) is (
              None
              if (i.count(False) > 1)
              else (
                  None
                  if None in i
                  else (True if all(j for j in i) else False)
              )
          )
      it = (True if (i == 0) else None for i in range(2))
      assert _torf(it) is None
      it = (True if (i == 1) else None for i in range(2))
      assert _torf(it) is None
  
file_path: sympy/sympy/core/tests/test_logic.py
imports: from sympy.core.logic import fuzzy_not, Logic, And, Or, Not, fuzzy_and, fuzzy_or, _fuzzy_group, _torf, fuzzy_nand, fuzzy_xor
  from sympy.testing.pytest import raises
  from itertools import product
label_desc: Use image node_id 2 for calling a global function with example usage: test_fuzzy_group() without return types