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[3.11] gh-100129: Add tests for pickling all builtin types and functions (GH-100142) #100405

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Merged
merged 1 commit into from
Dec 21, 2022
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[3.11] gh-100129: Add tests for pickling all builtin types and functions (GH-100142) #100405

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29 changes: 29 additions & 0 deletions Lib/test/pickletester.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
import builtins
import collections
import copyreg
import dbm
Expand All @@ -11,6 +12,7 @@
import struct
import sys
import threading
import types
import unittest
import weakref
from textwrap import dedent
Expand Down Expand Up @@ -1980,6 +1982,33 @@ def test_singleton_types(self):
u = self.loads(s)
self.assertIs(type(singleton), u)

def test_builtin_types(self):
for t in builtins.__dict__.values():
if isinstance(t, type) and not issubclass(t, BaseException):
for proto in protocols:
s = self.dumps(t, proto)
self.assertIs(self.loads(s), t)

def test_builtin_exceptions(self):
for t in builtins.__dict__.values():
if isinstance(t, type) and issubclass(t, BaseException):
for proto in protocols:
s = self.dumps(t, proto)
u = self.loads(s)
if proto <= 2 and issubclass(t, OSError) and t is not BlockingIOError:
self.assertIs(u, OSError)
elif proto <= 2 and issubclass(t, ImportError):
self.assertIs(u, ImportError)
else:
self.assertIs(u, t)

def test_builtin_functions(self):
for t in builtins.__dict__.values():
if isinstance(t, types.BuiltinFunctionType):
for proto in protocols:
s = self.dumps(t, proto)
self.assertIs(self.loads(s), t)

# Tests for protocol 2

def test_proto(self):
Expand Down