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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 if ' ' in python: |
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18 python = '"' + python + '"' # quote embedded space for cmdline |
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19 |
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20 class PopenTest(unittest.TestCase): |
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21 def _do_test_commandline(self, cmdline, expected): |
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22 cmd = '%s -c "import sys;print sys.argv" %s' % (python, cmdline) |
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23 data = os.popen(cmd).read() |
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24 got = eval(data)[1:] # strip off argv[0] |
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25 self.assertEqual(got, expected) |
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26 |
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27 def test_popen(self): |
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28 self.assertRaises(TypeError, os.popen) |
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29 self._do_test_commandline( |
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30 "foo bar", |
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31 ["foo", "bar"] |
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32 ) |
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33 self._do_test_commandline( |
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34 'foo "spam and eggs" "silly walk"', |
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35 ["foo", "spam and eggs", "silly walk"] |
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36 ) |
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37 self._do_test_commandline( |
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38 'foo "a \\"quoted\\" arg" bar', |
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39 ["foo", 'a "quoted" arg', "bar"] |
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40 ) |
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41 test_support.reap_children() |
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42 |
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43 def test_main(): |
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44 test_support.run_unittest(PopenTest) |
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45 |
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46 if __name__ == "__main__": |
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47 test_main() |