Add tests

Lib/test/test_sqlite3/test_dbapi.py

@@ -887,6 +887,21 @@ def test_rowcount_executemany(self):
         self.cu.executemany("insert into test(name) values (?)", [(1,), (2,), (3,)])
         self.assertEqual(self.cu.rowcount, 3)
 
+    def test_rowcount_prefixed_with_comment(self):
+        # gh-79579: rowcount is updated even if query is prefixed with comments
+        self.cu.execute("/* foo */ insert into test(name) values (?)", ('foo',))
+        self.assertEqual(self.cu.rowcount, 1)
+        self.cu.execute("/* bar */ update test set name='bar' where name='foo'")
+        self.assertEqual(self.cu.rowcount, 2)
+
+    @unittest.skipIf(sqlite.sqlite_version_info < (3, 35, 0),
+                     "Requires SQLite 3.35.0 or newer")
+    def test_rowcount_update_returning(self):
+        # gh-93421: rowcount is updated correctly for UPDATE...RETURNING queries
+        self.cu.execute("update test set name='bar' where name='foo' returning 1")
+        self.assertEqual(self.cu.fetchone()[0], 1)
+        self.assertEqual(self.cu.rowcount, 1)
+
     def test_total_changes(self):
         self.cu.execute("insert into test(name) values ('foo')")
         self.cu.execute("insert into test(name) values ('foo')")