Fix skipping of sjoin tests if rtree is not available

spatialpandas/tests/tools/test_sjoin.py

@@ -15,17 +15,20 @@
 from ..test_parquet import hyp_settings
 
 try:
-    import rtree # noqa
-    gpd_spatialindex = True
-except Exception:
+    from geopandas._compat import USE_PYGEOS, HAS_RTREE
+    gpd_spatialindex = USE_PYGEOS or HAS_RTREE
+except:
     try:
-        import pygeos # noqa
-        gpd_spatialindex = True
+        import rtree # noqa
+        gpd_spatialindex = rtree
     except Exception:
         gpd_spatialindex = False
 
-
-@pytest.mark.skipIf(not gpd_spatialindex, reason='Geopandas spatialindex not available to compare against')
+if not gpd_spatialindex:
+    pytest.skip('Geopandas spatialindex not available to compare against',
+                allow_module_level=True)
+
+
 @given(
     st_point_array(min_size=1, geoseries=True),
     st_polygon_array(min_size=1, geoseries=True),