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import unittest
from test import support
from io import StringIO
import pstats
class AddCallersTestCase(unittest.TestCase):
"""Tests for pstats.add_callers helper."""
def test_combine_results(self):
# pstats.add_callers should combine the call results of both target
# and source by adding the call time. See issue1269.
# new format: used by the cProfile module
target = {"a": (1, 2, 3, 4)}
source = {"a": (1, 2, 3, 4), "b": (5, 6, 7, 8)}
new_callers = pstats.add_callers(target, source)
self.assertEqual(new_callers, {'a': (2, 4, 6, 8), 'b': (5, 6, 7, 8)})
# old format: used by the profile module
target = {"a": 1}
source = {"a": 1, "b": 5}
new_callers = pstats.add_callers(target, source)
self.assertEqual(new_callers, {'a': 2, 'b': 5})
class StatsTestCase(unittest.TestCase):
def setUp(self):
stats_file = support.findfile('pstats.pck')
self.stats = pstats.Stats(stats_file)
def test_add(self):
stream = StringIO()
stats = pstats.Stats(stream=stream)
stats.add(self.stats, self.stats)
if __name__ == "__main__":
unittest.main()
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