code: def test_logic_onearg():
      assert And() is True
      assert Or() is False
  
      assert And(T) == T
      assert And(F) == F
      assert Or(T) == T
      assert Or(F) == F
  
      assert And("a") == "a"
      assert Or("a") == "a"
  
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 7 for calling a global function with example usage: test_logic_onearg() without return types