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import unittest
from test import test_support, list_tests
class ListTest(list_tests.CommonTest):
type2test = list
def test_truth(self):
super().test_truth()
self.assert_(not [])
self.assert_([42])
def test_identity(self):
self.assert_([] is not [])
def test_len(self):
super().test_len()
self.assertEqual(len([]), 0)
self.assertEqual(len([0]), 1)
self.assertEqual(len([0, 1, 2]), 3)
def test_main(verbose=None):
test_support.run_unittest(ListTest)
# verify reference counting
import sys
if verbose and hasattr(sys, "gettotalrefcount"):
import gc
counts = [None] * 5
for i in range(len(counts)):
test_support.run_unittest(ListTest)
gc.collect()
counts[i] = sys.gettotalrefcount()
print(counts)
if __name__ == "__main__":
test_main(verbose=True)
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