Skip SpatiaLite test if no conn.enable_load_extension()

Ran into this problem while working on #1802

tests/test_spatialite.py

@@ -1,5 +1,6 @@
 from datasette.app import Datasette
 from datasette.utils import find_spatialite, SpatialiteNotFound, SPATIALITE_FUNCTIONS
+from .utils import has_load_extension
 import pytest
 
 
@@ -13,6 +14,7 @@ def has_spatialite():
 
 @pytest.mark.asyncio
 @pytest.mark.skipif(not has_spatialite(), reason="Requires SpatiaLite")
+@pytest.mark.skipif(not has_load_extension(), reason="Requires enable_load_extension")
 async def test_spatialite_version_info():
     ds = Datasette(sqlite_extensions=["spatialite"])
     response = await ds.client.get("/-/versions.json")

tests/utils.py

@@ -1,3 +1,6 @@
+from datasette.utils.sqlite import sqlite3
+
+
 def assert_footer_links(soup):
     footer_links = soup.find("footer").findAll("a")
     assert 4 == len(footer_links)
@@ -22,3 +25,8 @@ def inner_html(soup):
     # This includes the parent tag - so remove that
     inner_html = html.split(">", 1)[1].rsplit("<", 1)[0]
     return inner_html.strip()
+
+
+def has_load_extension():
+    conn = sqlite3.connect(":memory:")
+    return hasattr(conn, "enable_load_extension")