code: def test_find_unit():
      assert find_unit("coulomb") == [
          "coulomb",
          "coulombs",
          "coulomb_constant",
      ]
      assert find_unit(coulomb) == [
          "C",
          "coulomb",
          "coulombs",
          "planck_charge",
          "elementary_charge",
      ]
      assert find_unit(charge) == [
          "C",
          "coulomb",
          "coulombs",
          "planck_charge",
          "elementary_charge",
      ]
      assert find_unit(inch) == [
          "m",
          "au",
          "cm",
          "dm",
          "ft",
          "km",
          "ly",
          "mi",
          "mm",
          "nm",
          "pm",
          "um",
          "yd",
          "nmi",
          "feet",
          "foot",
          "inch",
          "mile",
          "yard",
          "meter",
          "miles",
          "yards",
          "inches",
          "meters",
          "micron",
          "microns",
          "angstrom",
          "angstroms",
          "decimeter",
          "kilometer",
          "lightyear",
          "nanometer",
          "picometer",
          "centimeter",
          "decimeters",
          "kilometers",
          "lightyears",
          "micrometer",
          "millimeter",
          "nanometers",
          "picometers",
          "centimeters",
          "micrometers",
          "millimeters",
          "nautical_mile",
          "planck_length",
          "nautical_miles",
          "astronomical_unit",
          "astronomical_units",
      ]
      assert find_unit(inch**-1) == ["D", "dioptre", "optical_power"]
      assert find_unit(length**-1) == [
          "D",
          "dioptre",
          "optical_power",
      ]
      assert find_unit(inch**2) == ["ha", "hectare", "planck_area"]
      assert find_unit(inch**3) == [
          "L",
          "l",
          "cL",
          "cl",
          "dL",
          "dl",
          "mL",
          "ml",
          "liter",
          "quart",
          "liters",
          "quarts",
          "deciliter",
          "centiliter",
          "deciliters",
          "milliliter",
          "centiliters",
          "milliliters",
          "planck_volume",
      ]
      assert find_unit("voltage") == [
          "V",
          "v",
          "volt",
          "volts",
          "planck_voltage",
      ]
      assert find_unit(grams) == [
          "g",
          "t",
          "Da",
          "kg",
          "me",
          "mg",
          "ug",
          "amu",
          "mmu",
          "amus",
          "gram",
          "mmus",
          "grams",
          "pound",
          "tonne",
          "dalton",
          "pounds",
          "kilogram",
          "kilograms",
          "microgram",
          "milligram",
          "metric_ton",
          "micrograms",
          "milligrams",
          "planck_mass",
          "milli_mass_unit",
          "atomic_mass_unit",
          "electron_rest_mass",
          "atomic_mass_constant",
      ]
  
imports: import warnings
  from sympy.core.add import Add
  from sympy.core.function import Function, diff
  from sympy.core.numbers import Number, Rational
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.complexes import Abs
  from sympy.functions.elementary.exponential import exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import sin
  from sympy.integrals.integrals import integrate
  from sympy.physics.units import amount_of_substance, area, convert_to, find_unit, volume, kilometer, joule, molar_gas_constant, vacuum_permittivity, elementary_charge, volt, ohm
  from sympy.physics.units.definitions import amu, au, centimeter, coulomb, day, foot, grams, hour, inch, kg, km, m, meter, millimeter, minute, quart, s, second, speed_of_light, bit, byte, kibibyte, mebibyte, gibibyte, tebibyte, pebibyte, exbibyte, kilogram, gravitational_constant, electron_rest_mass
  from sympy.physics.units.definitions.dimension_definitions import Dimension, charge, length, time, temperature, pressure, energy, mass
  from sympy.physics.units.prefixes import PREFIXES, kilo
  from sympy.physics.units.quantities import PhysicalConstant, Quantity
  from sympy.physics.units.systems import SI
  from sympy.testing.pytest import raises
label_desc: Use image node_id 16 for calling a global function with example usage: test_find_unit() without return types