sdk/python/tests/test_keep_locator.py

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