sdk/python/tests/test_keep_locator.py

   1 # Copyright (C) The Arvados Authors. All rights reserved.
   2 #
   3 # SPDX-License-Identifier: Apache-2.0
   4
   5 from builtins import next
   6 from builtins import zip
   7 from builtins import str
   8 from builtins import range
   9 import datetime
  10 import itertools
  11 import random
  12 import unittest
  13
  14 from arvados.keep import KeepLocator
  15
  16 class ArvadosKeepLocatorTest(unittest.TestCase):
  17     DEFAULT_TEST_COUNT = 10
  18
  19     def numstrs(fmtstr, base, exponent):
  20         def genstrs(self, count=None):
  21             return (fmtstr.format(random.randint(0, base ** exponent))
  22                     for c in range(count or self.DEFAULT_TEST_COUNT))
  23         return genstrs
  24
  25     checksums = numstrs('{:032x}', 16, 32)
  26     sizes = numstrs('{:d}', 2, 26)
  27     signatures = numstrs('{:040x}', 16, 40)
  28     timestamps = numstrs('{:08x}', 16, 8)
  29
  30     def base_locators(self, count=DEFAULT_TEST_COUNT):
  31         return ('+'.join(pair) for pair in
  32                 zip(self.checksums(count), self.sizes(count)))
  33
  34     def perm_hints(self, count=DEFAULT_TEST_COUNT):
  35         for sig, ts in zip(self.signatures(count),
  36                                       self.timestamps(count)):
  37             yield 'A{}@{}'.format(sig, ts)
  38
  39     def test_good_locators_returned(self):
  40         for hint_gens in [(), (self.sizes(),),
  41                           (self.sizes(), self.perm_hints())]:
  42             for loc_data in zip(self.checksums(), *hint_gens):
  43                 locator = '+'.join(loc_data)
  44                 self.assertEqual(locator, str(KeepLocator(locator)))
  45
  46     def test_nonchecksum_rejected(self):
  47         for badstr in ['', 'badbadbad', '8f9e68d957b504a29ba76c526c3145dj',
  48                        '+8f9e68d957b504a29ba76c526c3145d9',
  49                        '3+8f9e68d957b504a29ba76c526c3145d9']:
  50             self.assertRaises(ValueError, KeepLocator, badstr)
  51
  52     def test_unknown_hints_accepted(self):
  53         base = next(self.base_locators(1))
  54         for weirdhint in ['Zfoo', 'Ybar234', 'Xa@b_c-372', 'W99']:
  55             locator = '+'.join([base, weirdhint])
  56             self.assertEqual(locator, str(KeepLocator(locator)))
  57
  58     def test_bad_hints_rejected(self):
  59         base = next(self.base_locators(1))
  60         for badhint in ['', 'A', 'lowercase', '+32']:
  61             self.assertRaises(ValueError, KeepLocator,
  62                               '+'.join([base, badhint]))
  63
  64     def test_multiple_locator_hints_accepted(self):
  65         base = next(self.base_locators(1))
  66         for loc_hints in itertools.permutations(['Kab1cd', 'Kef2gh', 'Kij3kl']):
  67             locator = '+'.join((base,) + loc_hints)
  68             self.assertEqual(locator, str(KeepLocator(locator)))
  69
  70     def test_str_type(self):
  71         base = next(self.base_locators(1))
  72         locator = KeepLocator(base)
  73         self.assertEqual(type(''), type(locator.__str__()))
  74
  75     def test_expiry_passed(self):
  76         base = next(self.base_locators(1))
  77         signature = next(self.signatures(1))
  78         dt1980 = datetime.datetime(1980, 1, 1)
  79         dt2000 = datetime.datetime(2000, 2, 2)
  80         dt2080 = datetime.datetime(2080, 3, 3)
  81         locator = KeepLocator(base)
  82         self.assertFalse(locator.permission_expired())
  83         self.assertFalse(locator.permission_expired(dt1980))
  84         self.assertFalse(locator.permission_expired(dt2080))
  85         # Timestamped to 1987-01-05 18:48:32.
  86         locator = KeepLocator('{}+A{}@20000000'.format(base, signature))
  87         self.assertTrue(locator.permission_expired())
  88         self.assertTrue(locator.permission_expired(dt2000))
  89         self.assertFalse(locator.permission_expired(dt1980))
  90
  91
  92 if __name__ == '__main__':
  93     unittest.main()