Mercurial > cpython-lru_cache-weakref

annotate Lib/json/tests/test_recursion.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 7106ca871bfd
children 614c84670c63
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4ded35754cb7 Add the 'json' package. Code taken from simplejson 1.9 and contributed by Bob
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1 from unittest import TestCase
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2
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3 import json
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4
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5 class JSONTestObject:
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6 pass
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7
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8
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9 class RecursiveJSONEncoder(json.JSONEncoder):
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10 recurse = False
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11 def default(self, o):
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12 if o is JSONTestObject:
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13 if self.recurse:
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14 return [JSONTestObject]
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15 else:
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16 return 'JSONTestObject'
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17 return json.JSONEncoder.default(o)
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18
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19
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20 class TestRecursion(TestCase):
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21 def test_listrecursion(self):
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22 x = []
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23 x.append(x)
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24 try:
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25 json.dumps(x)
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26 except ValueError:
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27 pass
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28 else:
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29 self.fail("didn't raise ValueError on list recursion")
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30 x = []
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31 y = [x]
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32 x.append(y)
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33 try:
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34 json.dumps(x)
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35 except ValueError:
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36 pass
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37 else:
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38 self.fail("didn't raise ValueError on alternating list recursion")
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39 y = []
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40 x = [y, y]
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41 # ensure that the marker is cleared
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42 json.dumps(x)
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43
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44 def test_dictrecursion(self):
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45 x = {}
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46 x["test"] = x
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47 try:
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48 json.dumps(x)
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49 except ValueError:
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50 pass
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51 else:
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52 self.fail("didn't raise ValueError on dict recursion")
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53 x = {}
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54 y = {"a": x, "b": x}
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55 # ensure that the marker is cleared
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56 json.dumps(x)
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57
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58 def test_defaultrecursion(self):
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59 enc = RecursiveJSONEncoder()
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60 self.assertEquals(enc.encode(JSONTestObject), '"JSONTestObject"')
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61 enc.recurse = True
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62 try:
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63 enc.encode(JSONTestObject)
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64 except ValueError:
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65 pass
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66 else:
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67 self.fail("didn't raise ValueError on default recursion")