sdk/python/tests/test_keep_locator.py

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