Add test case for blank db

Author: runestonetest

runestone/activecode/test/_sources/index.rst

@@ -1325,3 +1325,15 @@ Support for SQL in the browser ?  Yes!
     :dburl: /_static/test.db
 
     select * from test;
+
+
+.. activecode:: sql3
+    :language: sql
+
+    CREATE TABLE contacts (
+      contact_id INTEGER PRIMARY KEY,
+      first_name TEXT NOT NULL,
+      last_name TEXT NOT NULL,
+      email TEXT NOT NULL UNIQUE,
+      phone TEXT NOT NULL UNIQUE
+    );