TST: fix array tests to use proper empty Polygon (#2274)
TST: fix array tests to use proper empty Polygon (#2274)


geopandas/geopandas,geopandas/geopandas,jorisvandenbossche/geopandas,geopandas/geopandas,jorisvandenbossche/geopandas,jorisvandenbossche/geopandas