import sys
import math
from unittest import TestCase
from simplejson.compat import long_type, text_type
import simplejson as json
from simplejson.decoder import NaN, PosInf, NegInf
class TestFloat(TestCase):
def test_degenerates_allow(self):
for inf in (PosInf, NegInf):
self.assertEqual(json.loads(json.dumps(inf, allow_nan=True), allow_nan=True), inf)
# Python 2.5 doesn't have math.isnan
nan = json.loads(json.dumps(NaN, allow_nan=True), allow_nan=True)
self.assertTrue((0 + nan) != nan)
def test_degenerates_ignore(self):
for f in (PosInf, NegInf, NaN):
self.assertEqual(json.loads(json.dumps(f, ignore_nan=True)), None)
def test_degenerates_deny(self):
for f in (PosInf, NegInf, NaN):
self.assertRaises(ValueError, json.dumps, f, allow_nan=False)
for s in ('Infinity', '-Infinity', 'NaN'):
self.assertRaises(ValueError, json.loads, s, allow_nan=False)
self.assertRaises(ValueError, json.loads, s)
def test_floats(self):
for num in [1617161771.7650001, math.pi, math.pi**100,
math.pi**-100, 3.1]:
self.assertEqual(float(json.dumps(num)), num)
self.assertEqual(json.loads(json.dumps(num)), num)
self.assertEqual(json.loads(text_type(json.dumps(num))), num)
def test_ints(self):
for num in [1, long_type(1), 1<<32, 1<<64]:
self.assertEqual(json.dumps(num), str(num))
self.assertEqual(int(json.dumps(num)), num)
self.assertEqual(json.loads(json.dumps(num)), num)
self.assertEqual(json.loads(text_type(json.dumps(num))), num)
def test_float_range(self):
try:
float_range = [sys.float_info.min, sys.float_info.max]
except AttributeError:
float_range = [2.2250738585072014e-308, 1.7976931348623157e+308]
self.assertEqual(json.loads(json.dumps(float_range)), float_range)
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