code: def test_quantity_abs():
      v_w1 = Quantity("v_w1")
      v_w2 = Quantity("v_w2")
      v_w3 = Quantity("v_w3")
  
      v_w1.set_global_relative_scale_factor(1, meter / second)
      v_w2.set_global_relative_scale_factor(1, meter / second)
      v_w3.set_global_relative_scale_factor(1, meter / second)
  
      expr = v_w3 - Abs(v_w1 - v_w2)
  
      assert SI.get_dimensional_expr(v_w1) == (length / time).name
  
      Dq = Dimension(SI.get_dimensional_expr(expr))
  
      assert SI.get_dimension_system().get_dimensional_dependencies(
          Dq
      ) == {
          length: 1,
          time: -1,
      }
      assert meter == sqrt(meter**2)
  
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 9 for calling a global function with example usage: test_quantity_abs() without return types