def METHOD_NAME(self):
    """Test that AreaBoundary.contour returns the correct (lon,lat) tuple."""
    list_sides = [(np.array([1., 1.5, 2.]), np.array([6., 6.5, 7.])),
                  (np.array([2., 3.]), np.array([7., 8.])),
                  (np.array([3., 3.5, 4.]), np.array([8., 8.5, 9.])),
                  (np.array([4., 1.]), np.array([9., 6.]))]
    boundary = AreaBoundary(*list_sides)
    lons, lats = boundary.contour()
    assert np.allclose(lons, np.array([1., 1.5, 2., 3., 3.5, 4.]))
    assert np.allclose(lats, np.array([6., 6.5, 7., 8., 8.5, 9.]))