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"""
GeoJSON produces and consumes only strict JSON. NAN and Infinity are not
permissible values according to the JSON specification.
"""
import unittest
import geojson
class StrictJsonTest(unittest.TestCase):
def test_encode_nan(self):
"""
Ensure Error is raised when encoding nan
"""
self._raises_on_dump({
"type": "Point",
"coordinates": (float("nan"), 1.0),
})
def test_encode_inf(self):
"""
Ensure Error is raised when encoding inf or -inf
"""
self._raises_on_dump({
"type": "Point",
"coordinates": (float("inf"), 1.0),
})
self._raises_on_dump({
"type": "Point",
"coordinates": (float("-inf"), 1.0),
})
def _raises_on_dump(self, unstrict):
with self.assertRaises(ValueError):
geojson.dumps(unstrict)
def test_decode_nan(self):
"""
Ensure Error is raised when decoding NaN
"""
self._raises_on_load('{"type": "Point", "coordinates": [1.0, NaN]}')
def test_decode_inf(self):
"""
Ensure Error is raised when decoding Infinity or -Infinity
"""
self._raises_on_load(
'{"type": "Point", "coordinates": [1.0, Infinity]}')
self._raises_on_load(
'{"type": "Point", "coordinates": [1.0, -Infinity]}')
def _raises_on_load(self, unstrict):
with self.assertRaises(ValueError):
geojson.loads(unstrict)
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