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import unittest
from test.support import import_helper
_testcapi = import_helper.import_module('_testcapi')
_testinternalcapi = import_helper.import_module('_testinternalcapi')
class TestUnstableCAPI(unittest.TestCase):
def test_immortal(self):
# Not extensive
known_immortals = (True, False, None, 0, ())
for immortal in known_immortals:
with self.subTest(immortal=immortal):
self.assertTrue(_testcapi.is_immortal(immortal))
# Some arbitrary mutable objects
non_immortals = (object(), self, [object()])
for non_immortal in non_immortals:
with self.subTest(non_immortal=non_immortal):
self.assertFalse(_testcapi.is_immortal(non_immortal))
# CRASHES _testcapi.is_immortal(NULL)
class TestInternalCAPI(unittest.TestCase):
def test_immortal_builtins(self):
for obj in range(-5, 256):
self.assertTrue(_testinternalcapi.is_static_immortal(obj))
self.assertTrue(_testinternalcapi.is_static_immortal(None))
self.assertTrue(_testinternalcapi.is_static_immortal(False))
self.assertTrue(_testinternalcapi.is_static_immortal(True))
self.assertTrue(_testinternalcapi.is_static_immortal(...))
self.assertTrue(_testinternalcapi.is_static_immortal(()))
for obj in range(300, 400):
self.assertFalse(_testinternalcapi.is_static_immortal(obj))
for obj in ([], {}, set()):
self.assertFalse(_testinternalcapi.is_static_immortal(obj))
if __name__ == "__main__":
unittest.main()
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