commit 00a240bf7f95bbd220f1cfbf9eb58484a5f9681a Author: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Date: Fri May 29 05:46:34 2020 -0700 bpo-40784: Fix sqlite3 deterministic test (GH-20448) (cherry picked from commit c610d970f5373b143bf5f5900d4645e6a90fb460) Co-authored-by: Erlend Egeberg Aasland diff --git a/Lib/sqlite3/test/userfunctions.py b/Lib/sqlite3/test/userfunctions.py index 9501f53..c11c82e 100644 --- a/Lib/sqlite3/test/userfunctions.py +++ b/Lib/sqlite3/test/userfunctions.py @@ -1,8 +1,7 @@ -#-*- coding: iso-8859-1 -*- # pysqlite2/test/userfunctions.py: tests for user-defined functions and # aggregates. # -# Copyright (C) 2005-2007 Gerhard Häring +# Copyright (C) 2005-2007 Gerhard Häring # # This file is part of pysqlite. # @@ -158,6 +157,7 @@ class FunctionTests(unittest.TestCase): self.con.create_function("isblob", 1, func_isblob) self.con.create_function("islonglong", 1, func_islonglong) self.con.create_function("spam", -1, func) + self.con.execute("create table test(t text)") def tearDown(self): self.con.close() @@ -276,18 +276,36 @@ class FunctionTests(unittest.TestCase): val = cur.fetchone()[0] self.assertEqual(val, 2) + # Regarding deterministic functions: + # + # Between 3.8.3 and 3.15.0, deterministic functions were only used to + # optimize inner loops, so for those versions we can only test if the + # sqlite machinery has factored out a call or not. From 3.15.0 and onward, + # deterministic functions were permitted in WHERE clauses of partial + # indices, which allows testing based on syntax, iso. the query optimizer. + @unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "Requires SQLite 3.8.3 or higher") def CheckFuncNonDeterministic(self): mock = unittest.mock.Mock(return_value=None) - self.con.create_function("deterministic", 0, mock, deterministic=False) - self.con.execute("select deterministic() = deterministic()") - self.assertEqual(mock.call_count, 2) - - @unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "deterministic parameter not supported") + self.con.create_function("nondeterministic", 0, mock, deterministic=False) + if sqlite.sqlite_version_info < (3, 15, 0): + self.con.execute("select nondeterministic() = nondeterministic()") + self.assertEqual(mock.call_count, 2) + else: + with self.assertRaises(sqlite.OperationalError): + self.con.execute("create index t on test(t) where nondeterministic() is not null") + + @unittest.skipIf(sqlite.sqlite_version_info < (3, 8, 3), "Requires SQLite 3.8.3 or higher") def CheckFuncDeterministic(self): mock = unittest.mock.Mock(return_value=None) self.con.create_function("deterministic", 0, mock, deterministic=True) - self.con.execute("select deterministic() = deterministic()") - self.assertEqual(mock.call_count, 1) + if sqlite.sqlite_version_info < (3, 15, 0): + self.con.execute("select deterministic() = deterministic()") + self.assertEqual(mock.call_count, 1) + else: + try: + self.con.execute("create index t on test(t) where deterministic() is not null") + except sqlite.OperationalError: + self.fail("Unexpected failure while creating partial index") @unittest.skipIf(sqlite.sqlite_version_info >= (3, 8, 3), "SQLite < 3.8.3 needed") def CheckFuncDeterministicNotSupported(self):