code: def test_cgs_gauss_convert_constants():
      assert (
          convert_to(speed_of_light, centimeter / second, cgs_gauss)
          == 29979245800 * centimeter / second
      )
  
      assert convert_to(coulomb_constant, 1, cgs_gauss) == 1
      assert convert_to(
          coulomb_constant,
          newton * meter**2 / coulomb**2,
          cgs_gauss,
      ) == 22468879468420441 * meter**2 * newton / (
          2500000 * coulomb**2
      )
      assert convert_to(
          coulomb_constant, newton * meter**2 / coulomb**2, SI
      ) == 22468879468420441 * meter**2 * newton / (
          2500000 * coulomb**2
      )
      assert (
          convert_to(
              coulomb_constant,
              dyne * centimeter**2 / statcoulomb**2,
              cgs_gauss,
          )
          == centimeter**2 * dyne / statcoulomb**2
      )
      assert convert_to(coulomb_constant, 1, SI) == coulomb_constant
      assert (
          NS(
              convert_to(
                  coulomb_constant,
                  newton * meter**2 / coulomb**2,
                  SI,
              )
          )
          == "8987551787.36818*meter**2*newton/coulomb**2"
      )
  
      assert convert_to(elementary_charge, statcoulomb, cgs_gauss)
      assert (
          convert_to(angstrom, centimeter, cgs_gauss)
          == 1 * centimeter / 10**8
      )
      assert convert_to(
          gravitational_constant,
          dyne * centimeter**2 / gram**2,
          cgs_gauss,
      )
      assert (
          NS(convert_to(planck, erg * second, cgs_gauss))
          == "6.62607015e-27*erg*second"
      )
  
      spc = 25000 * second / (22468879468420441 * centimeter)
      assert convert_to(ohm, second / centimeter, cgs_gauss) == spc
      assert (
          convert_to(henry, second**2 / centimeter, cgs_gauss)
          == spc * second
      )
      assert (
          convert_to(volt, statvolt, cgs_gauss)
          == 10**6 * statvolt / 299792458
      )
      assert (
          convert_to(farad, centimeter, cgs_gauss)
          == 299792458**2 * centimeter / 10**5
      )
  
file_path: sympy/sympy/physics/units/tests/test_unit_system_cgs_gauss.py
imports: from sympy.concrete.tests.test_sums_products import NS
  from sympy.core.singleton import S
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.physics.units import convert_to, coulomb_constant, elementary_charge, gravitational_constant, planck
  from sympy.physics.units.definitions.unit_definitions import angstrom, statcoulomb, coulomb, second, gram, centimeter, erg, newton, joule, dyne, speed_of_light, meter, farad, henry, statvolt, volt, ohm
  from sympy.physics.units.systems import SI
  from sympy.physics.units.systems.cgs import cgs_gauss
label_desc: Use image node_id 2 for calling a global function with example usage: test_cgs_gauss_convert_constants() without return types