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# ----------------------------------------------------------------------------
# Copyright (c) 2016-2023, QIIME 2 development team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
# ----------------------------------------------------------------------------
import unittest
from skbio.metadata._enan import get_payload_from_nan, make_nan_with_payload
class TestNanPayloads(unittest.TestCase):
def test_normal_nan(self):
normal_nan = float('nan')
payload, namespace = get_payload_from_nan(normal_nan)
self.assertIs(payload, None)
self.assertIs(namespace, None)
def test_roundtrip_payload(self):
for namespace in range(0, 256):
for payload in range(-50, 500):
nan = make_nan_with_payload(payload, namespace)
new_payload, new_namespace = get_payload_from_nan(nan)
self.assertEqual(namespace, new_namespace)
self.assertEqual(payload, new_payload)
self.assertNotEqual(nan, nan)
def test_user_namespace_default(self):
nan = make_nan_with_payload(42)
payload, namespace = get_payload_from_nan(nan)
self.assertEqual(42, payload)
self.assertEqual(255, namespace)
self.assertNotEqual(nan, nan)
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