code: def test_wavefunction():
      Psi = {
          0: (1 / sqrt(2 * pi)),
          1: (1 / sqrt(2 * pi)) * exp(I * x),
          2: (1 / sqrt(2 * pi)) * exp(2 * I * x),
          3: (1 / sqrt(2 * pi)) * exp(3 * I * x),
      }
      for n in Psi:
          assert simplify(wavefunction(n, x) - Psi[n]) == 0
  
file_path: sympy/sympy/physics/tests/test_pring.py
imports: from sympy.physics.pring import wavefunction, energy
  from sympy.core.numbers import I, pi
  from sympy.functions.elementary.exponential import exp
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.integrals.integrals import integrate
  from sympy.simplify.simplify import simplify
  from sympy.abc import m, x, r
  from sympy.physics.quantum.constants import hbar
label_desc: Use image node_id 1 for calling a global function with example usage: test_wavefunction() without return types