summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_atexit.py
blob: 0ff6e53bdc5d790a3f43b2e44c6c66a2de9672c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
import sys
import unittest
import StringIO
import atexit
from test import test_support

class TestCase(unittest.TestCase):
    def setUp(self):
        s = StringIO.StringIO()
        self.save_stdout = sys.stdout
        self.save_stderr = sys.stderr
        sys.stdout = sys.stderr = self.subst_io = s
        self.save_handlers = atexit._exithandlers
        atexit._exithandlers = []

    def tearDown(self):
        sys.stdout = self.save_stdout
        sys.stderr = self.save_stderr
        atexit._exithandlers = self.save_handlers

    def test_args(self):
        atexit.register(self.h1)
        atexit.register(self.h4)
        atexit.register(self.h4, 4, kw="abc")
        atexit._run_exitfuncs()
        self.assertEqual(self.subst_io.getvalue(),
                         "h4 (4,) {'kw': 'abc'}\nh4 () {}\nh1\n")

    def test_badargs(self):
        atexit.register(lambda: 1, 0, 0, (x for x in (1,2)), 0, 0)
        self.assertRaises(TypeError, atexit._run_exitfuncs)

    def test_order(self):
        atexit.register(self.h1)
        atexit.register(self.h2)
        atexit.register(self.h3)
        atexit._run_exitfuncs()
        self.assertEqual(self.subst_io.getvalue(), "h3\nh2\nh1\n")

    def test_sys_override(self):
        # be sure a preset sys.exitfunc is handled properly
        exfunc = sys.exitfunc
        sys.exitfunc = self.h1
        reload(atexit)
        try:
            atexit.register(self.h2)
            atexit._run_exitfuncs()
        finally:
            sys.exitfunc = exfunc
        self.assertEqual(self.subst_io.getvalue(), "h2\nh1\n")

    def test_raise(self):
        atexit.register(self.raise1)
        atexit.register(self.raise2)
        self.assertRaises(TypeError, atexit._run_exitfuncs)

    ### helpers
    def h1(self):
        print "h1"

    def h2(self):
        print "h2"

    def h3(self):
        print "h3"

    def h4(self, *args, **kwargs):
        print "h4", args, kwargs

    def raise1(self):
        raise TypeError

    def raise2(self):
        raise SystemError

def test_main():
    test_support.run_unittest(TestCase)


if __name__ == "__main__":
    test_main()