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import math
from json.tests import PyTest, CTest
class TestFloat(object):
def test_floats(self):
for num in [1617161771.7650001, math.pi, math.pi**100,
math.pi**-100, 3.1]:
self.assertEqual(float(self.dumps(num)), num)
self.assertEqual(self.loads(self.dumps(num)), num)
self.assertEqual(self.loads(unicode(self.dumps(num))), num)
def test_ints(self):
for num in [1, 1L, 1<<32, 1<<64]:
self.assertEqual(self.dumps(num), str(num))
self.assertEqual(int(self.dumps(num)), num)
self.assertEqual(self.loads(self.dumps(num)), num)
self.assertEqual(self.loads(unicode(self.dumps(num))), num)
def test_out_of_range(self):
self.assertEqual(self.loads('[23456789012E666]'), [float('inf')])
self.assertEqual(self.loads('[-23456789012E666]'), [float('-inf')])
def test_allow_nan(self):
for val in (float('inf'), float('-inf'), float('nan')):
out = self.dumps([val])
if val == val: # inf
self.assertEqual(self.loads(out), [val])
else: # nan
res = self.loads(out)
self.assertEqual(len(res), 1)
self.assertNotEqual(res[0], res[0])
self.assertRaises(ValueError, self.dumps, [val], allow_nan=False)
def test_float_subclasses_use_float_repr(self):
# Issue 27934.
class PeculiarFloat(float):
def __repr__(self):
return "I'm not valid JSON"
def __str__(self):
return "Neither am I"
val = PeculiarFloat(3.2)
self.assertEqual(self.loads(self.dumps(val)), val)
class TestPyFloat(TestFloat, PyTest): pass
class TestCFloat(TestFloat, CTest): pass
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