code: def test_evalpow_bug():
      x = Symbol("x")
      assert 1 / (1 / x) == x
      assert 1 / (-1 / x) == -x
  
file_path: sympy/sympy/core/tests/test_eval.py
imports: from sympy.core.function import Function
  from sympy.core.numbers import I, Rational
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol
  from sympy.functions.elementary.exponential import exp
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import cos, tan
  from sympy.testing.pytest import XFAIL
label_desc: Use image node_id 6 for calling a global function with example usage: test_evalpow_bug() without return types