1import unittest
2from test import test_support
3import pstats
4
5
6
7class AddCallersTestCase(unittest.TestCase):
8    """Tests for pstats.add_callers helper."""
9
10    def test_combine_results(self):
11        """pstats.add_callers should combine the call results of both target
12        and source by adding the call time. See issue1269."""
13        # new format: used by the cProfile module
14        target = {"a": (1, 2, 3, 4)}
15        source = {"a": (1, 2, 3, 4), "b": (5, 6, 7, 8)}
16        new_callers = pstats.add_callers(target, source)
17        self.assertEqual(new_callers, {'a': (2, 4, 6, 8), 'b': (5, 6, 7, 8)})
18        # old format: used by the profile module
19        target = {"a": 1}
20        source = {"a": 1, "b": 5}
21        new_callers = pstats.add_callers(target, source)
22        self.assertEqual(new_callers, {'a': 2, 'b': 5})
23
24
25def test_main():
26    test_support.run_unittest(
27        AddCallersTestCase
28    )
29
30
31if __name__ == "__main__":
32    test_main()
33