Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_json/test_float.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
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4ded35754cb7 Add the 'json' package. Code taken from simplejson 1.9 and contributed by Bob
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1 import math
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2 from test.test_json import PyTest, CTest
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4
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5 class TestFloat:
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6 def test_floats(self):
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7 for num in [1617161771.7650001, math.pi, math.pi**100, math.pi**-100, 3.1]:
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8 self.assertEqual(float(self.dumps(num)), num)
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9 self.assertEqual(self.loads(self.dumps(num)), num)
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11 def test_ints(self):
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12 for num in [1, 1<<32, 1<<64]:
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13 self.assertEqual(self.dumps(num), str(num))
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14 self.assertEqual(int(self.dumps(num)), num)
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15
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16 def test_out_of_range(self):
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17 self.assertEqual(self.loads('[23456789012E666]'), [float('inf')])
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18 self.assertEqual(self.loads('[-23456789012E666]'), [float('-inf')])
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20 def test_allow_nan(self):
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21 for val in (float('inf'), float('-inf'), float('nan')):
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22 out = self.dumps([val])
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23 if val == val: # inf
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24 self.assertEqual(self.loads(out), [val])
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25 else: # nan
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26 res = self.loads(out)
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27 self.assertEqual(len(res), 1)
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28 self.assertNotEqual(res[0], res[0])
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29 self.assertRaises(ValueError, self.dumps, [val], allow_nan=False)
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30
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32 class TestPyFloat(TestFloat, PyTest): pass
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33 class TestCFloat(TestFloat, CTest): pass