code: def test_constant_function():
      assert constant_renumber(constantsimp(sin(C1), [C1])) == C1
      assert constant_renumber(constantsimp(f(C1), [C1])) == C1
      assert constant_renumber(constantsimp(f(C1, C1), [C1])) == C1
      assert constant_renumber(constantsimp(f(C1, C2), [C1, C2])) == C1
      assert constant_renumber(constantsimp(f(C2, C1), [C1, C2])) == C1
      assert constant_renumber(constantsimp(f(C2, C2), [C1, C2])) == C1
      assert constant_renumber(constantsimp(f(C1, x), [C1])) == f(C1, x)
      assert constant_renumber(constantsimp(f(C1, y), [C1, y])) == C1
      assert constant_renumber(constantsimp(f(y, C1), [C1, y])) == C1
      assert (
          constant_renumber(constantsimp(f(C1, y, C2), [C1, C2, y]))
          == C1
      )
  
imports: from sympy.core.function import Function
  from sympy.core.numbers import I
  from sympy.core.power import Pow
  from sympy.core.relational import Eq
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol
  from sympy.functions.elementary.exponential import exp, log
  from sympy.functions.elementary.hyperbolic import cosh, sinh
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import acos, cos, sin
  from sympy.integrals.integrals import Integral
  from sympy.solvers.ode.ode import constantsimp, constant_renumber
  from sympy.testing.pytest import XFAIL
label_desc: Use image node_id 5 for calling a global function with example usage: test_constant_function() without return types