generated_columns table in fixtures.py, closes #1119

tests/fixtures.py

@@ -1,5 +1,5 @@
 from datasette.app import Datasette
-from datasette.utils.sqlite import sqlite3
+from datasette.utils.sqlite import sqlite3, sqlite_version, supports_generated_columns
 from datasette.utils.testing import TestClient
 import click
 import contextlib
@@ -116,6 +116,8 @@ def make_app_client(
             immutables = []
         conn = sqlite3.connect(filepath)
         conn.executescript(TABLES)
+        if supports_generated_columns():
+            conn.executescript(GENERATED_COLUMNS_SQL)
         for sql, params in TABLE_PARAMETERIZED_SQL:
             with conn:
                 conn.execute(sql, params)
@@ -699,6 +701,18 @@ INSERT INTO "searchable_fts" (rowid, text1, text2)
     SELECT rowid, text1, text2 FROM searchable;
 """
 
+GENERATED_COLUMNS_SQL = """
+CREATE TABLE generated_columns (
+    body TEXT,
+    id INT GENERATED ALWAYS AS (json_extract(body, '$.number')) STORED,
+    consideration INT GENERATED ALWAYS AS (json_extract(body, '$.string')) STORED
+);
+INSERT INTO generated_columns (body) VALUES ('{
+    "number": 1,
+    "string": "This is a string"
+}');
+"""
+
 
 def assert_permissions_checked(datasette, actions):
     # actions is a list of "action" or (action, resource) tuples
@@ -754,6 +768,9 @@ def cli(db_filename, metadata, plugins_path, recreate):
     for sql, params in TABLE_PARAMETERIZED_SQL:
         with conn:
             conn.execute(sql, params)
+    if supports_generated_columns():
+        with conn:
+            conn.executescript(GENERATED_COLUMNS_SQL)
     print(f"Test tables written to {db_filename}")
     if metadata:
         open(metadata, "w").write(json.dumps(METADATA, indent=4))