Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_popen.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents a73b92d1e9fd
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #! /usr/bin/env python
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2 """Basic tests for os.popen()
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3
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4 Particularly useful for platforms that fake popen.
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5 """
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6
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7 import unittest
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8 from test import test_support
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9 import os, sys
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10
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11 # Test that command-lines get down as we expect.
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12 # To do this we execute:
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13 # python -c "import sys;print sys.argv" {rest_of_commandline}
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14 # This results in Python being spawned and printing the sys.argv list.
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15 # We can then eval() the result of this, and see what each argv was.
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16 python = sys.executable
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17
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18 class PopenTest(unittest.TestCase):
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19 def _do_test_commandline(self, cmdline, expected):
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20 cmd = '%s -c "import sys;print sys.argv" %s' % (python, cmdline)
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21 data = os.popen(cmd).read() + '\n'
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22 got = eval(data)[1:] # strip off argv[0]
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23 self.assertEqual(got, expected)
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24
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25 def test_popen(self):
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26 self.assertRaises(TypeError, os.popen)
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27 self._do_test_commandline(
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28 "foo bar",
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29 ["foo", "bar"]
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30 )
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31 self._do_test_commandline(
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32 'foo "spam and eggs" "silly walk"',
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33 ["foo", "spam and eggs", "silly walk"]
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34 )
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35 self._do_test_commandline(
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36 'foo "a \\"quoted\\" arg" bar',
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37 ["foo", 'a "quoted" arg', "bar"]
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38 )
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39 test_support.reap_children()
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40
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41 def test_return_code(self):
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42 self.assertEqual(os.popen("exit 0").close(), None)
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43 if os.name == 'nt':
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44 self.assertEqual(os.popen("exit 42").close(), 42)
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45 else:
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46 self.assertEqual(os.popen("exit 42").close(), 42 << 8)
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47
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48 def test_main():
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49 test_support.run_unittest(PopenTest)
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50
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51 if __name__ == "__main__":
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52 test_main()