8b385a87dc
This utility function is useful to parse values like the 200m or 300Gi memory and cpu resources stored in kubernetes manifests. It uses Decimal as output format as it usually represents typical input values more accurately and reduces rounding errors.
113 lines
4.4 KiB
Python
113 lines
4.4 KiB
Python
# coding: utf-8
|
|
# Copyright 2019 The Kubernetes Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from __future__ import absolute_import
|
|
|
|
import unittest
|
|
from kubernetes.utils import parse_quantity
|
|
from decimal import Decimal
|
|
|
|
|
|
class TestQuantity(unittest.TestCase):
|
|
def test_parse(self):
|
|
self.assertIsInstance(parse_quantity(2.2), Decimal)
|
|
# input, expected output
|
|
tests = [
|
|
(0, 0),
|
|
(2, 2),
|
|
(2, Decimal("2")),
|
|
(2., 2),
|
|
(Decimal("2.2"), Decimal("2.2")),
|
|
(2., Decimal(2)),
|
|
(Decimal("2."), 2),
|
|
("123", 123),
|
|
("2", 2),
|
|
("2n", Decimal("2") * Decimal(1000)**-3),
|
|
("2u", Decimal("0.000002")),
|
|
("2m", Decimal("0.002")),
|
|
("0m", Decimal("0")),
|
|
("0M", Decimal("0")),
|
|
("223k", 223000),
|
|
("002M", 2 * 1000**2),
|
|
("2M", 2 * 1000**2),
|
|
("4123G", 4123 * 1000**3),
|
|
("2T", 2 * 1000**4),
|
|
("2P", 2 * 1000**5),
|
|
("2E", 2 * 1000**6),
|
|
|
|
("223Ki", 223 * 1024),
|
|
("002Mi", 2 * 1024**2),
|
|
("2Mi", 2 * 1024**2),
|
|
("2Gi", 2 * 1024**3),
|
|
("4123Gi", 4123 * 1024**3),
|
|
("2Ti", 2 * 1024**4),
|
|
("2Pi", 2 * 1024**5),
|
|
("2Ei", 2 * 1024**6),
|
|
|
|
("2.34n", Decimal("2.34") * Decimal(1000)**-3),
|
|
("2.34u", Decimal("2.34") * Decimal(1000)**-2),
|
|
("2.34m", Decimal("2.34") * Decimal(1000)**-1),
|
|
("2.34Ki", Decimal("2.34") * 1024),
|
|
("2.34", Decimal("2.34")),
|
|
(".34", Decimal("0.34")),
|
|
("34.", 34),
|
|
(".34M", Decimal("0.34") * 1000**2),
|
|
|
|
("2e2K", Decimal("2e2") * 1000),
|
|
("2e2Ki", Decimal("2e2") * 1024),
|
|
("2e-2Ki", Decimal("2e-2") * 1024),
|
|
("2.34E1", Decimal("2.34E1")),
|
|
(".34e-2", Decimal("0.34e-2")),
|
|
]
|
|
|
|
for inp, out in tests:
|
|
self.assertEqual(parse_quantity(inp), out)
|
|
if isinstance(inp, (int, float, Decimal)):
|
|
self.assertEqual(parse_quantity(-1 * inp), -out)
|
|
else:
|
|
self.assertEqual(parse_quantity("-" + inp), -out)
|
|
self.assertEqual(parse_quantity("+" + inp), out)
|
|
|
|
def test_parse_invalid(self):
|
|
self.assertRaises(ValueError, parse_quantity, [])
|
|
self.assertRaises(ValueError, parse_quantity, "")
|
|
self.assertRaises(ValueError, parse_quantity, "-")
|
|
self.assertRaises(ValueError, parse_quantity, "i")
|
|
self.assertRaises(ValueError, parse_quantity, "2i")
|
|
self.assertRaises(ValueError, parse_quantity, "2mm")
|
|
self.assertRaises(ValueError, parse_quantity, "2mmKi")
|
|
self.assertRaises(ValueError, parse_quantity, "2KKi")
|
|
self.assertRaises(ValueError, parse_quantity, "2e")
|
|
self.assertRaises(ValueError, parse_quantity, "2.2i")
|
|
self.assertRaises(ValueError, parse_quantity, "bla")
|
|
self.assertRaises(ValueError, parse_quantity, "Ki")
|
|
self.assertRaises(ValueError, parse_quantity, "M")
|
|
self.assertRaises(ValueError, parse_quantity, "2ki")
|
|
self.assertRaises(ValueError, parse_quantity, "2Ki ")
|
|
self.assertRaises(ValueError, parse_quantity, "20Ki ")
|
|
self.assertRaises(ValueError, parse_quantity, "20B")
|
|
self.assertRaises(ValueError, parse_quantity, "20Bi")
|
|
self.assertRaises(ValueError, parse_quantity, "20.2Bi")
|
|
self.assertRaises(ValueError, parse_quantity, "2MiKi")
|
|
self.assertRaises(ValueError, parse_quantity, "2MK")
|
|
self.assertRaises(ValueError, parse_quantity, "2MKi")
|
|
self.assertRaises(ValueError, parse_quantity, "234df")
|
|
self.assertRaises(ValueError, parse_quantity, "df234")
|
|
self.assertRaises(ValueError, parse_quantity, tuple())
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|