Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_json/test_tool.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 95cf8640b271
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 import os
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2 import sys
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3 import textwrap
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4 import unittest
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5 import subprocess
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6 from test import support
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7 from test.script_helper import assert_python_ok
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8
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9 class TestTool(unittest.TestCase):
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10 data = """
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12 [["blorpie"],[ "whoops" ] , [
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13 ],\t"d-shtaeou",\r"d-nthiouh",
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14 "i-vhbjkhnth", {"nifty":87}, {"morefield" :\tfalse,"field"
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15 :"yes"} ]
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16 """
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17
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18 expect = textwrap.dedent("""\
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19 [
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20 [
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21 "blorpie"
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22 ],
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23 [
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24 "whoops"
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25 ],
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26 [],
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27 "d-shtaeou",
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28 "d-nthiouh",
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29 "i-vhbjkhnth",
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30 {
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31 "nifty": 87
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32 },
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33 {
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34 "field": "yes",
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35 "morefield": false
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36 }
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37 ]
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38 """)
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40 def test_stdin_stdout(self):
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41 with subprocess.Popen(
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42 (sys.executable, '-m', 'json.tool'),
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43 stdin=subprocess.PIPE, stdout=subprocess.PIPE) as proc:
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44 out, err = proc.communicate(self.data.encode())
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45 self.assertEqual(out.splitlines(), self.expect.encode().splitlines())
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46 self.assertEqual(err, None)
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48 def _create_infile(self):
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49 infile = support.TESTFN
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50 with open(infile, "w") as fp:
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51 self.addCleanup(os.remove, infile)
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52 fp.write(self.data)
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53 return infile
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55 def test_infile_stdout(self):
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56 infile = self._create_infile()
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57 rc, out, err = assert_python_ok('-m', 'json.tool', infile)
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58 self.assertEqual(out.splitlines(), self.expect.encode().splitlines())
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59 self.assertEqual(err, b'')
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61 def test_infile_outfile(self):
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62 infile = self._create_infile()
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63 outfile = support.TESTFN + '.out'
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64 rc, out, err = assert_python_ok('-m', 'json.tool', infile, outfile)
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65 self.addCleanup(os.remove, outfile)
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66 with open(outfile, "r") as fp:
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67 self.assertEqual(fp.read(), self.expect)
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68 self.assertEqual(out, b'')
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69 self.assertEqual(err, b'')