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[3.10] bpo-13236: Flush the output stream more often in unittest (GH-29864) (GH-29929)

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It can prevent some losses when output to buffered stream..
(cherry picked from commit f42a06ba27)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Serhiy Storchaka 2021-12-11 01:36:15 +02:00 • committed by GitHub
parent 8f3728edcb
commit 83fa1291fd
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4 changed files with 44 additions and 4 deletions
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16
Lib/unittest/test/test_program.py
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@ -6,6 +6,7 @@
from test import support
import unittest
import unittest.test
from .test_result import BufferedWriter
class Test_TestProgram(unittest.TestCase):
@ -104,30 +105,39 @@ def run(self, test):
program.testNames)
def test_NonExit(self):
stream = BufferedWriter()
program = unittest.main(exit=False,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
testRunner=unittest.TextTestRunner(stream=stream),
testLoader=self.FooBarLoader())
self.assertTrue(hasattr(program, 'result'))
self.assertIn('\nFAIL: testFail ', stream.getvalue())
self.assertTrue(stream.getvalue().endswith('\n\nFAILED (failures=1)\n'))
def test_Exit(self):
stream = BufferedWriter()
self.assertRaises(
SystemExit,
unittest.main,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
testRunner=unittest.TextTestRunner(stream=stream),
exit=True,
testLoader=self.FooBarLoader())
self.assertIn('\nFAIL: testFail ', stream.getvalue())
self.assertTrue(stream.getvalue().endswith('\n\nFAILED (failures=1)\n'))
def test_ExitAsDefault(self):
stream = BufferedWriter()
self.assertRaises(
SystemExit,
unittest.main,
argv=["foobar"],
testRunner=unittest.TextTestRunner(stream=io.StringIO()),
testRunner=unittest.TextTestRunner(stream=stream),
testLoader=self.FooBarLoader())
self.assertIn('\nFAIL: testFail ', stream.getvalue())
self.assertTrue(stream.getvalue().endswith('\n\nFAILED (failures=1)\n'))
class InitialisableProgram(unittest.TestProgram):