code: def test_LongitudeLocator(cls, vmin, vmax, expected):
      locator = cls(dms=True)
      result = locator.tick_values(vmin, vmax)
      np.testing.assert_allclose(result, expected)
  
imports: from unittest.mock import Mock
  import matplotlib.pyplot
  import numpy
  import pytest
  import cartopy.crs
  from cartopy.mpl.geoaxes import GeoAxes
  from cartopy.mpl.ticker import LatitudeFormatter, LatitudeLocator, LongitudeFormatter, LongitudeLocator
label_desc: Use image node_id 17 for calling a global function with example usage: test_LongitudeLocator(cls, vmin, vmax, expected) without return types