Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_binhex.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 5c2d15c6007e
children
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1 #! /usr/bin/env python3
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2 """Test script for the binhex C module
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3
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4 Uses the mechanism of the python binhex module
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5 Based on an original test by Roger E. Masse.
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6 """
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7 import binhex
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8 import os
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9 import unittest
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10 from test import support
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11
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12
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13 class BinHexTestCase(unittest.TestCase):
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14
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15 def setUp(self):
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16 self.fname1 = support.TESTFN + "1"
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17 self.fname2 = support.TESTFN + "2"
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18 self.fname3 = support.TESTFN + "very_long_filename__very_long_filename__very_long_filename__very_long_filename__"
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19
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20 def tearDown(self):
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21 support.unlink(self.fname1)
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22 support.unlink(self.fname2)
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23 support.unlink(self.fname3)
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24
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25 DATA = b'Jack is my hero'
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26
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27 def test_binhex(self):
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28 f = open(self.fname1, 'wb')
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29 f.write(self.DATA)
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30 f.close()
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31
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32 binhex.binhex(self.fname1, self.fname2)
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33
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34 binhex.hexbin(self.fname2, self.fname1)
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35
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36 f = open(self.fname1, 'rb')
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37 finish = f.readline()
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38 f.close()
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39
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40 self.assertEqual(self.DATA, finish)
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41
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42 def test_binhex_error_on_long_filename(self):
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43 """
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44 The testcase fails if no exception is raised when a filename parameter provided to binhex.binhex()
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45 is too long, or if the exception raised in binhex.binhex() is not an instance of binhex.Error.
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46 """
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47 f3 = open(self.fname3, 'wb')
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48 f3.close()
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49
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50 self.assertRaises(binhex.Error, binhex.binhex, self.fname3, self.fname2)
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51
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52 def test_main():
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53 support.run_unittest(BinHexTestCase)
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55
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56 if __name__ == "__main__":
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57 test_main()