code: def test_exp2():
      e1 = exp(cos(x)).series(x, 0)
      e2 = series(exp(cos(x)), x, 0)
      assert e1 == e2
  
imports: from sympy.core.evalf import N
  from sympy.core.function import Derivative, Function, PoleError, Subs
  from sympy.core.numbers import E, Float, Rational, oo, pi, I
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.exponential import LambertW, exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import atan, cos, sin
  from sympy.functions.special.gamma_functions import gamma
  from sympy.integrals.integrals import Integral, integrate
  from sympy.series.order import O
  from sympy.series.series import series
  from sympy.abc import x, y, n, k
  from sympy.testing.pytest import raises
  from sympy.core import EulerGamma
  from sympy.series.acceleration import richardson, shanks
  from sympy.concrete.summations import Sum
  from sympy.core.numbers import Integer
label_desc: Use image node_id 4 for calling a global function with example usage: test_exp2() without return types