python (3.11.7)
1 # helper module for test_runner.Test_TextTestRunner.test_warnings
2
3 """
4 This module has a number of tests that raise different kinds of warnings.
5 When the tests are run, the warnings are caught and their messages are printed
6 to stdout. This module also accepts an arg that is then passed to
7 unittest.main to affect the behavior of warnings.
8 Test_TextTestRunner.test_warnings executes this script with different
9 combinations of warnings args and -W flags and check that the output is correct.
10 See #10535.
11 """
12
13 import sys
14 import unittest
15 import warnings
16
17 def warnfun():
18 warnings.warn('rw', RuntimeWarning)
19
20 class ESC[4;38;5;81mTestWarnings(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
21 # unittest warnings will be printed at most once per type (max one message
22 # for the fail* methods, and one for the assert* methods)
23 def test_assert(self):
24 self.assertEquals(2+2, 4)
25 self.assertEquals(2*2, 4)
26 self.assertEquals(2**2, 4)
27
28 def test_fail(self):
29 self.failUnless(1)
30 self.failUnless(True)
31
32 def test_other_unittest(self):
33 self.assertAlmostEqual(2+2, 4)
34 self.assertNotAlmostEqual(4+4, 2)
35
36 # these warnings are normally silenced, but they are printed in unittest
37 def test_deprecation(self):
38 warnings.warn('dw', DeprecationWarning)
39 warnings.warn('dw', DeprecationWarning)
40 warnings.warn('dw', DeprecationWarning)
41
42 def test_import(self):
43 warnings.warn('iw', ImportWarning)
44 warnings.warn('iw', ImportWarning)
45 warnings.warn('iw', ImportWarning)
46
47 # user warnings should always be printed
48 def test_warning(self):
49 warnings.warn('uw')
50 warnings.warn('uw')
51 warnings.warn('uw')
52
53 # these warnings come from the same place; they will be printed
54 # only once by default or three times if the 'always' filter is used
55 def test_function(self):
56
57 warnfun()
58 warnfun()
59 warnfun()
60
61
62
63 if __name__ == '__main__':
64 with warnings.catch_warnings(record=True) as ws:
65 # if an arg is provided pass it to unittest.main as 'warnings'
66 if len(sys.argv) == 2:
67 unittest.main(exit=False, warnings=sys.argv.pop())
68 else:
69 unittest.main(exit=False)
70
71 # print all the warning messages collected
72 for w in ws:
73 print(w.message)
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