372
393
self.assertEqual([], index._parsed_byte_map)
373
394
self.assertEqual([], index._parsed_key_map)
396
def test_key_count_buffers(self):
397
index = self.make_index(nodes=self.make_nodes(2))
398
# reset the transport log
399
del index._transport._activity[:]
400
self.assertEqual(2, index.key_count())
401
# We should have requested reading the header bytes
403
('readv', 'index', [(0, 200)], True, index._size),
405
index._transport._activity)
406
# And that should have been enough to trigger reading the whole index
408
self.assertIsNot(None, index._nodes)
410
def test_lookup_key_via_location_buffers(self):
411
index = self.make_index()
412
# reset the transport log
413
del index._transport._activity[:]
414
# do a _lookup_keys_via_location call for the middle of the file, which
415
# is what bisection uses.
416
result = index._lookup_keys_via_location(
417
[(index._size // 2, ('missing', ))])
418
# this should have asked for a readv request, with adjust_for_latency,
419
# and two regions: the header, and half-way into the file.
421
('readv', 'index', [(30, 30), (0, 200)], True, 60),
423
index._transport._activity)
424
# and the result should be that the key cannot be present, because this
425
# is a trivial index.
426
self.assertEqual([((index._size // 2, ('missing', )), False)],
428
# And this should have caused the file to be fully buffered
429
self.assertIsNot(None, index._nodes)
430
self.assertEqual([], index._parsed_byte_map)
375
432
def test_first_lookup_key_via_location(self):
376
index = self.make_index()
433
# We need enough data so that the _HEADER_READV doesn't consume the
434
# whole file. We always read 800 bytes for every key, and the local
435
# transport natural expansion is 4096 bytes. So we have to have >8192
436
# bytes or we will trigger "buffer_all".
437
# We also want the 'missing' key to fall within the range that *did*
440
index = self.make_index(nodes=self.make_nodes(64))
377
441
# reset the transport log
378
442
del index._transport._activity[:]
379
443
# do a _lookup_keys_via_location call for the middle of the file, which
380
444
# is what bisection uses.
445
start_lookup = index._size // 2
381
446
result = index._lookup_keys_via_location(
382
[(index._size // 2, ('missing', ))])
447
[(start_lookup, ('40missing', ))])
383
448
# this should have asked for a readv request, with adjust_for_latency,
384
449
# and two regions: the header, and half-way into the file.
385
450
self.assertEqual([
386
('readv', 'index', [(30, 30), (0, 200)], True, 60),
452
[(start_lookup, 800), (0, 200)], True, index._size),
388
454
index._transport._activity)
389
455
# and the result should be that the key cannot be present, because this
390
456
# is a trivial index.
391
self.assertEqual([((index._size // 2, ('missing', )), False)],
393
# And the regions of the file that have been parsed - in this case the
394
# entire file - should be in the parsed region map.
395
self.assertEqual([(0, 60)], index._parsed_byte_map)
396
self.assertEqual([(None, None)], index._parsed_key_map)
398
def test_parsing_parses_data_adjacent_to_parsed_regions(self):
399
# we trim data we recieve to remove the first and trailing
400
# partial lines, except when they start at the end/finish at the start
401
# of a region we've alread parsed/ the end of the file. The trivial
402
# test for this is an index with 1 key.
403
index = self.make_index(nodes=[(('name', ), 'data', ())])
404
# reset the transport log
405
del index._transport._activity[:]
406
result = index._lookup_keys_via_location(
407
[(index._size // 2, ('missing', ))])
408
# this should have asked for a readv request, with adjust_for_latency,
409
# and two regions: the header, and half-way into the file.
411
('readv', 'index', [(36, 36), (0, 200)], True, 72),
413
index._transport._activity)
414
# and the result should be that the key cannot be present, because this
415
# is a trivial index and we should not have to do more round trips.
416
self.assertEqual([((index._size // 2, ('missing', )), False)],
418
# The whole file should be parsed at this point.
419
self.assertEqual([(0, 72)], index._parsed_byte_map)
420
self.assertEqual([(None, ('name',))], index._parsed_key_map)
457
self.assertEqual([((start_lookup, ('40missing', )), False)],
459
# And this should not have caused the file to be fully buffered
460
self.assertIs(None, index._nodes)
461
# And the regions of the file that have been parsed should be in the
462
# parsed_byte_map and the parsed_key_map
463
self.assertEqual([(0, 4008), (5046, 8996)], index._parsed_byte_map)
464
self.assertEqual([(None, self.make_key(26)),
465
(self.make_key(31), self.make_key(48))],
466
index._parsed_key_map)
422
468
def test_parsing_non_adjacent_data_trims(self):
423
# generate a big enough index that we only read some of it on a typical
426
def make_key(number):
427
return (str(number) + 'X'*100,)
428
for counter in range(64):
429
nodes.append((make_key(counter), 'Y'*100, ()))
430
index = self.make_index(nodes=nodes)
469
index = self.make_index(nodes=self.make_nodes(64))
431
470
result = index._lookup_keys_via_location(
432
471
[(index._size // 2, ('40', ))])
433
472
# and the result should be that the key cannot be present, because key is
448
488
# which then trims the start and end so the parsed size is < readv
450
490
# then a dual lookup (or a reference lookup for that matter) which
451
# abuts or overlaps the parsed region on both sides will need to
491
# abuts or overlaps the parsed region on both sides will need to
452
492
# discard the data in the middle, but parse the end as well.
454
# we test this by doing a single lookup to seed the data, then
455
# a lookup for two keys that are present, and adjacent -
494
# we test this by doing a single lookup to seed the data, then
495
# a lookup for two keys that are present, and adjacent -
456
496
# we except both to be found, and the parsed byte map to include the
457
497
# locations of both keys.
459
def make_key(number):
460
return (str(number) + 'X'*100,)
461
def make_value(number):
463
for counter in range(128):
464
nodes.append((make_key(counter), make_value(counter), ()))
465
index = self.make_index(nodes=nodes)
498
index = self.make_index(nodes=self.make_nodes(128))
466
499
result = index._lookup_keys_via_location(
467
500
[(index._size // 2, ('40', ))])
468
501
# and we should have a parse map that includes the header and the
469
502
# region that was parsed after trimming.
470
self.assertEqual([(0, 3991), (11622, 15534)], index._parsed_byte_map)
471
self.assertEqual([(None, make_key(116)), (make_key(35), make_key(51))],
503
self.assertEqual([(0, 4045), (11759, 15707)], index._parsed_byte_map)
504
self.assertEqual([(None, self.make_key(116)),
505
(self.make_key(35), self.make_key(51))],
472
506
index._parsed_key_map)
473
507
# now ask for two keys, right before and after the parsed region
474
508
result = index._lookup_keys_via_location(
475
[(11450, make_key(34)), (15534, make_key(52))])
509
[(11450, self.make_key(34)), (15707, self.make_key(52))])
476
510
self.assertEqual([
477
((11450, make_key(34)), (index, make_key(34), make_value(34))),
478
((15534, make_key(52)), (index, make_key(52), make_value(52))),
511
((11450, self.make_key(34)),
512
(index, self.make_key(34), self.make_value(34))),
513
((15707, self.make_key(52)),
514
(index, self.make_key(52), self.make_value(52))),
481
self.assertEqual([(0, 3991), (9975, 17799)], index._parsed_byte_map)
517
self.assertEqual([(0, 4045), (9889, 17993)], index._parsed_byte_map)
483
519
def test_lookup_missing_key_answers_without_io_when_map_permits(self):
484
520
# generate a big enough index that we only read some of it on a typical
485
521
# bisection lookup.
487
def make_key(number):
488
return (str(number) + 'X'*100,)
489
for counter in range(64):
490
nodes.append((make_key(counter), 'Y'*100, ()))
491
index = self.make_index(nodes=nodes)
522
index = self.make_index(nodes=self.make_nodes(64))
492
523
# lookup the keys in the middle of the file
493
524
result =index._lookup_keys_via_location(
494
525
[(index._size // 2, ('40', ))])
495
526
# check the parse map, this determines the test validity
496
self.assertEqual([(0, 3972), (5001, 8914)], index._parsed_byte_map)
497
self.assertEqual([(None, make_key(26)), (make_key(31), make_key(48))],
527
self.assertEqual([(0, 4008), (5046, 8996)], index._parsed_byte_map)
528
self.assertEqual([(None, self.make_key(26)),
529
(self.make_key(31), self.make_key(48))],
498
530
index._parsed_key_map)
499
531
# reset the transport log
500
532
del index._transport._activity[:]
533
558
# not create a new transport request, and should return False (cannot
534
559
# be in the index) - even when the byte location we ask for is outside
535
560
# the parsed region
537
result = index._lookup_keys_via_location([(4000, make_key(40))])
562
result = index._lookup_keys_via_location([(4000, self.make_key(40))])
538
563
self.assertEqual(
539
[((4000, make_key(40)), (index, make_key(40), make_value(40)))],
564
[((4000, self.make_key(40)),
565
(index, self.make_key(40), self.make_value(40)))],
541
567
self.assertEqual([], index._transport._activity)
543
569
def test_lookup_key_below_probed_area(self):
544
570
# generate a big enough index that we only read some of it on a typical
545
571
# bisection lookup.
547
def make_key(number):
548
return (str(number) + 'X'*100,)
549
for counter in range(64):
550
nodes.append((make_key(counter), 'Y'*100, ()))
551
index = self.make_index(nodes=nodes)
572
index = self.make_index(nodes=self.make_nodes(64))
552
573
# ask for the key in the middle, but a key that is located in the
553
574
# unparsed region before the middle.
554
575
result =index._lookup_keys_via_location(
555
576
[(index._size // 2, ('30', ))])
556
577
# check the parse map, this determines the test validity
557
self.assertEqual([(0, 3972), (5001, 8914)], index._parsed_byte_map)
558
self.assertEqual([(None, make_key(26)), (make_key(31), make_key(48))],
578
self.assertEqual([(0, 4008), (5046, 8996)], index._parsed_byte_map)
579
self.assertEqual([(None, self.make_key(26)),
580
(self.make_key(31), self.make_key(48))],
559
581
index._parsed_key_map)
560
582
self.assertEqual([((index._size // 2, ('30', )), -1)],
584
602
# generate a big enough index that we only read some of it on a typical
585
603
# bisection lookup.
587
def make_key(number):
588
return (str(number) + 'X'*100,)
589
def make_value(number):
590
return str(number) + 'Y'*100
605
for counter in range(99):
606
nodes.append((self.make_key(counter), self.make_value(counter),
607
((self.make_key(counter + 20),),) ))
608
index = self.make_index(ref_lists=1, nodes=nodes)
609
# lookup a key in the middle that does not exist, so that when we can
610
# check that the referred-to-keys are not accessed automatically.
611
index_size = index._size
612
index_center = index_size // 2
613
result = index._lookup_keys_via_location(
614
[(index_center, ('40', ))])
615
# check the parse map - only the start and middle should have been
617
self.assertEqual([(0, 4027), (10198, 14028)], index._parsed_byte_map)
618
self.assertEqual([(None, self.make_key(17)),
619
(self.make_key(44), self.make_key(5))],
620
index._parsed_key_map)
621
# and check the transport activity likewise.
623
[('readv', 'index', [(index_center, 800), (0, 200)], True,
625
index._transport._activity)
626
# reset the transport log for testing the reference lookup
627
del index._transport._activity[:]
628
# now looking up a key in the portion of the file already parsed should
629
# only perform IO to resolve its key references.
630
result = index._lookup_keys_via_location([(11000, self.make_key(45))])
632
[((11000, self.make_key(45)),
633
(index, self.make_key(45), self.make_value(45),
634
((self.make_key(65),),)))],
636
self.assertEqual([('readv', 'index', [(15093, 800)], True, index_size)],
637
index._transport._activity)
639
def test_lookup_key_can_buffer_all(self):
591
641
for counter in range(64):
592
nodes.append((make_key(counter), make_value(counter),
593
((make_key(counter + 20),),) ))
642
nodes.append((self.make_key(counter), self.make_value(counter),
643
((self.make_key(counter + 20),),) ))
594
644
index = self.make_index(ref_lists=1, nodes=nodes)
595
645
# lookup a key in the middle that does not exist, so that when we can
596
646
# check that the referred-to-keys are not accessed automatically.
597
result =index._lookup_keys_via_location(
598
[(index._size // 2, ('40', ))])
647
index_size = index._size
648
index_center = index_size // 2
649
result = index._lookup_keys_via_location([(index_center, ('40', ))])
599
650
# check the parse map - only the start and middle should have been
601
652
self.assertEqual([(0, 3890), (6444, 10274)], index._parsed_byte_map)
602
self.assertEqual([(None, make_key(25)), (make_key(37), make_key(52))],
653
self.assertEqual([(None, self.make_key(25)),
654
(self.make_key(37), self.make_key(52))],
603
655
index._parsed_key_map)
604
656
# and check the transport activity likewise.
605
657
self.assertEqual(
606
[('readv', 'index', [(7906, 800), (0, 200)], True, 15813)],
658
[('readv', 'index', [(index_center, 800), (0, 200)], True,
607
660
index._transport._activity)
608
661
# reset the transport log for testing the reference lookup
609
662
del index._transport._activity[:]
610
663
# now looking up a key in the portion of the file already parsed should
611
664
# only perform IO to resolve its key references.
612
result = index._lookup_keys_via_location([(4000, make_key(40))])
665
result = index._lookup_keys_via_location([(7000, self.make_key(40))])
613
666
self.assertEqual(
614
[((4000, make_key(40)),
615
(index, make_key(40), make_value(40), ((make_key(60),),)))],
667
[((7000, self.make_key(40)),
668
(index, self.make_key(40), self.make_value(40),
669
((self.make_key(60),),)))],
617
self.assertEqual([('readv', 'index', [(11976, 800)], True, 15813)],
618
index._transport._activity)
671
# Resolving the references would have required more data read, and we
672
# are already above the 50% threshold, so it triggered a _buffer_all
673
self.assertEqual([('get', 'index')], index._transport._activity)
620
675
def test_iter_all_entries_empty(self):
621
676
index = self.make_index()
640
695
(index, ('ref', ), 'refdata', ((), ))]),
641
696
set(index.iter_all_entries()))
698
def test_iter_entries_buffers_once(self):
699
index = self.make_index(nodes=self.make_nodes(2))
700
# reset the transport log
701
del index._transport._activity[:]
702
self.assertEqual(set([(index, self.make_key(1), self.make_value(1))]),
703
set(index.iter_entries([self.make_key(1)])))
704
# We should have requested reading the header bytes
705
# But not needed any more than that because it would have triggered a
708
('readv', 'index', [(0, 200)], True, index._size),
710
index._transport._activity)
711
# And that should have been enough to trigger reading the whole index
713
self.assertIsNot(None, index._nodes)
715
def test_iter_entries_buffers_by_bytes_read(self):
716
index = self.make_index(nodes=self.make_nodes(64))
717
list(index.iter_entries([self.make_key(10)]))
718
# The first time through isn't enough to trigger a buffer all
719
self.assertIs(None, index._nodes)
720
self.assertEqual(4096, index._bytes_read)
721
# Grabbing a key in that same page won't trigger a buffer all, as we
722
# still haven't read 50% of the file
723
list(index.iter_entries([self.make_key(11)]))
724
self.assertIs(None, index._nodes)
725
self.assertEqual(4096, index._bytes_read)
726
# We haven't read more data, so reading outside the range won't trigger
727
# a buffer all right away
728
list(index.iter_entries([self.make_key(40)]))
729
self.assertIs(None, index._nodes)
730
self.assertEqual(8192, index._bytes_read)
731
# On the next pass, we will not trigger buffer all if the key is
732
# available without reading more
733
list(index.iter_entries([self.make_key(32)]))
734
self.assertIs(None, index._nodes)
735
# But if we *would* need to read more to resolve it, then we will
737
list(index.iter_entries([self.make_key(60)]))
738
self.assertIsNot(None, index._nodes)
643
740
def test_iter_entries_references_resolved(self):
644
741
index = self.make_index(1, nodes=[
645
742
(('name', ), 'data', ([('ref', ), ('ref', )], )),
802
922
index = self.make_index(nodes=[(('key', ), 'value', ())])
925
# XXX: external_references tests are duplicated in test_btree_index. We
926
# probably should have per_graph_index tests...
927
def test_external_references_no_refs(self):
928
index = self.make_index(ref_lists=0, nodes=[])
929
self.assertRaises(ValueError, index.external_references, 0)
931
def test_external_references_no_results(self):
932
index = self.make_index(ref_lists=1, nodes=[
933
(('key',), 'value', ([],))])
934
self.assertEqual(set(), index.external_references(0))
936
def test_external_references_missing_ref(self):
937
missing_key = ('missing',)
938
index = self.make_index(ref_lists=1, nodes=[
939
(('key',), 'value', ([missing_key],))])
940
self.assertEqual(set([missing_key]), index.external_references(0))
942
def test_external_references_multiple_ref_lists(self):
943
missing_key = ('missing',)
944
index = self.make_index(ref_lists=2, nodes=[
945
(('key',), 'value', ([], [missing_key]))])
946
self.assertEqual(set([]), index.external_references(0))
947
self.assertEqual(set([missing_key]), index.external_references(1))
949
def test_external_references_two_records(self):
950
index = self.make_index(ref_lists=1, nodes=[
951
(('key-1',), 'value', ([('key-2',)],)),
952
(('key-2',), 'value', ([],)),
954
self.assertEqual(set([]), index.external_references(0))
956
def test__find_ancestors(self):
959
index = self.make_index(ref_lists=1, key_elements=1, nodes=[
960
(key1, 'value', ([key2],)),
961
(key2, 'value', ([],)),
965
search_keys = index._find_ancestors([key1], 0, parent_map, missing_keys)
966
self.assertEqual({key1: (key2,)}, parent_map)
967
self.assertEqual(set(), missing_keys)
968
self.assertEqual(set([key2]), search_keys)
969
search_keys = index._find_ancestors(search_keys, 0, parent_map,
971
self.assertEqual({key1: (key2,), key2: ()}, parent_map)
972
self.assertEqual(set(), missing_keys)
973
self.assertEqual(set(), search_keys)
975
def test__find_ancestors_w_missing(self):
979
index = self.make_index(ref_lists=1, key_elements=1, nodes=[
980
(key1, 'value', ([key2],)),
981
(key2, 'value', ([],)),
985
search_keys = index._find_ancestors([key2, key3], 0, parent_map,
987
self.assertEqual({key2: ()}, parent_map)
988
self.assertEqual(set([key3]), missing_keys)
989
self.assertEqual(set(), search_keys)
991
def test__find_ancestors_dont_search_known(self):
995
index = self.make_index(ref_lists=1, key_elements=1, nodes=[
996
(key1, 'value', ([key2],)),
997
(key2, 'value', ([key3],)),
998
(key3, 'value', ([],)),
1000
# We already know about key2, so we won't try to search for key3
1001
parent_map = {key2: (key3,)}
1002
missing_keys = set()
1003
search_keys = index._find_ancestors([key1], 0, parent_map,
1005
self.assertEqual({key1: (key2,), key2: (key3,)}, parent_map)
1006
self.assertEqual(set(), missing_keys)
1007
self.assertEqual(set(), search_keys)
1009
def test_supports_unlimited_cache(self):
1010
builder = GraphIndexBuilder(0, key_elements=1)
1011
stream = builder.finish()
1012
trans = get_transport(self.get_url())
1013
size = trans.put_file('index', stream)
1014
# It doesn't matter what unlimited_cache does here, just that it can be
1016
index = GraphIndex(trans, 'index', size, unlimited_cache=True)
806
1019
class TestCombinedGraphIndex(TestCaseWithMemoryTransport):
957
1203
index = CombinedGraphIndex([])
958
1204
index.validate()
1206
def test_key_count_reloads(self):
1207
index, reload_counter = self.make_combined_index_with_missing()
1208
self.assertEqual(2, index.key_count())
1209
self.assertEqual([1, 1, 0], reload_counter)
1211
def test_key_count_no_reload(self):
1212
index, reload_counter = self.make_combined_index_with_missing()
1213
index._reload_func = None
1214
# Without a _reload_func we just raise the exception
1215
self.assertRaises(errors.NoSuchFile, index.key_count)
1217
def test_key_count_reloads_and_fails(self):
1218
# We have deleted all underlying indexes, so we will try to reload, but
1219
# still fail. This is mostly to test we don't get stuck in an infinite
1220
# loop trying to reload
1221
index, reload_counter = self.make_combined_index_with_missing(
1223
self.assertRaises(errors.NoSuchFile, index.key_count)
1224
self.assertEqual([2, 1, 1], reload_counter)
1226
def test_iter_entries_reloads(self):
1227
index, reload_counter = self.make_combined_index_with_missing()
1228
result = list(index.iter_entries([('1',), ('2',), ('3',)]))
1229
index3 = index._indices[0]
1230
self.assertEqual([(index3, ('1',), ''), (index3, ('2',), '')],
1232
self.assertEqual([1, 1, 0], reload_counter)
1234
def test_iter_entries_reloads_midway(self):
1235
# The first index still looks present, so we get interrupted mid-way
1237
index, reload_counter = self.make_combined_index_with_missing(['2'])
1238
index1, index2 = index._indices
1239
result = list(index.iter_entries([('1',), ('2',), ('3',)]))
1240
index3 = index._indices[0]
1241
# We had already yielded '1', so we just go on to the next, we should
1242
# not yield '1' twice.
1243
self.assertEqual([(index1, ('1',), ''), (index3, ('2',), '')],
1245
self.assertEqual([1, 1, 0], reload_counter)
1247
def test_iter_entries_no_reload(self):
1248
index, reload_counter = self.make_combined_index_with_missing()
1249
index._reload_func = None
1250
# Without a _reload_func we just raise the exception
1251
self.assertListRaises(errors.NoSuchFile, index.iter_entries, [('3',)])
1253
def test_iter_entries_reloads_and_fails(self):
1254
index, reload_counter = self.make_combined_index_with_missing(
1256
self.assertListRaises(errors.NoSuchFile, index.iter_entries, [('3',)])
1257
self.assertEqual([2, 1, 1], reload_counter)
1259
def test_iter_all_entries_reloads(self):
1260
index, reload_counter = self.make_combined_index_with_missing()
1261
result = list(index.iter_all_entries())
1262
index3 = index._indices[0]
1263
self.assertEqual([(index3, ('1',), ''), (index3, ('2',), '')],
1265
self.assertEqual([1, 1, 0], reload_counter)
1267
def test_iter_all_entries_reloads_midway(self):
1268
index, reload_counter = self.make_combined_index_with_missing(['2'])
1269
index1, index2 = index._indices
1270
result = list(index.iter_all_entries())
1271
index3 = index._indices[0]
1272
# We had already yielded '1', so we just go on to the next, we should
1273
# not yield '1' twice.
1274
self.assertEqual([(index1, ('1',), ''), (index3, ('2',), '')],
1276
self.assertEqual([1, 1, 0], reload_counter)
1278
def test_iter_all_entries_no_reload(self):
1279
index, reload_counter = self.make_combined_index_with_missing()
1280
index._reload_func = None
1281
self.assertListRaises(errors.NoSuchFile, index.iter_all_entries)
1283
def test_iter_all_entries_reloads_and_fails(self):
1284
index, reload_counter = self.make_combined_index_with_missing(
1286
self.assertListRaises(errors.NoSuchFile, index.iter_all_entries)
1288
def test_iter_entries_prefix_reloads(self):
1289
index, reload_counter = self.make_combined_index_with_missing()
1290
result = list(index.iter_entries_prefix([('1',)]))
1291
index3 = index._indices[0]
1292
self.assertEqual([(index3, ('1',), '')], result)
1293
self.assertEqual([1, 1, 0], reload_counter)
1295
def test_iter_entries_prefix_reloads_midway(self):
1296
index, reload_counter = self.make_combined_index_with_missing(['2'])
1297
index1, index2 = index._indices
1298
result = list(index.iter_entries_prefix([('1',)]))
1299
index3 = index._indices[0]
1300
# We had already yielded '1', so we just go on to the next, we should
1301
# not yield '1' twice.
1302
self.assertEqual([(index1, ('1',), '')], result)
1303
self.assertEqual([1, 1, 0], reload_counter)
1305
def test_iter_entries_prefix_no_reload(self):
1306
index, reload_counter = self.make_combined_index_with_missing()
1307
index._reload_func = None
1308
self.assertListRaises(errors.NoSuchFile, index.iter_entries_prefix,
1311
def test_iter_entries_prefix_reloads_and_fails(self):
1312
index, reload_counter = self.make_combined_index_with_missing(
1314
self.assertListRaises(errors.NoSuchFile, index.iter_entries_prefix,
1317
def test_validate_reloads(self):
1318
index, reload_counter = self.make_combined_index_with_missing()
1320
self.assertEqual([1, 1, 0], reload_counter)
1322
def test_validate_reloads_midway(self):
1323
index, reload_counter = self.make_combined_index_with_missing(['2'])
1326
def test_validate_no_reload(self):
1327
index, reload_counter = self.make_combined_index_with_missing()
1328
index._reload_func = None
1329
self.assertRaises(errors.NoSuchFile, index.validate)
1331
def test_validate_reloads_and_fails(self):
1332
index, reload_counter = self.make_combined_index_with_missing(
1334
self.assertRaises(errors.NoSuchFile, index.validate)
1336
def test_find_ancestors_across_indexes(self):
1341
index1 = self.make_index('12', ref_lists=1, nodes=[
1342
(key1, 'value', ([],)),
1343
(key2, 'value', ([key1],)),
1345
index2 = self.make_index('34', ref_lists=1, nodes=[
1346
(key3, 'value', ([key2],)),
1347
(key4, 'value', ([key3],)),
1349
c_index = CombinedGraphIndex([index1, index2])
1350
parent_map, missing_keys = c_index.find_ancestry([key1], 0)
1351
self.assertEqual({key1: ()}, parent_map)
1352
self.assertEqual(set(), missing_keys)
1353
# Now look for a key from index2 which requires us to find the key in
1354
# the second index, and then continue searching for parents in the
1356
parent_map, missing_keys = c_index.find_ancestry([key3], 0)
1357
self.assertEqual({key1: (), key2: (key1,), key3: (key2,)}, parent_map)
1358
self.assertEqual(set(), missing_keys)
1360
def test_find_ancestors_missing_keys(self):
1365
index1 = self.make_index('12', ref_lists=1, nodes=[
1366
(key1, 'value', ([],)),
1367
(key2, 'value', ([key1],)),
1369
index2 = self.make_index('34', ref_lists=1, nodes=[
1370
(key3, 'value', ([key2],)),
1372
c_index = CombinedGraphIndex([index1, index2])
1373
# Searching for a key which is actually not present at all should
1374
# eventually converge
1375
parent_map, missing_keys = c_index.find_ancestry([key4], 0)
1376
self.assertEqual({}, parent_map)
1377
self.assertEqual(set([key4]), missing_keys)
1379
def test_find_ancestors_no_indexes(self):
1380
c_index = CombinedGraphIndex([])
1382
parent_map, missing_keys = c_index.find_ancestry([key1], 0)
1383
self.assertEqual({}, parent_map)
1384
self.assertEqual(set([key1]), missing_keys)
1386
def test_find_ancestors_ghost_parent(self):
1391
index1 = self.make_index('12', ref_lists=1, nodes=[
1392
(key1, 'value', ([],)),
1393
(key2, 'value', ([key1],)),
1395
index2 = self.make_index('34', ref_lists=1, nodes=[
1396
(key4, 'value', ([key2, key3],)),
1398
c_index = CombinedGraphIndex([index1, index2])
1399
# Searching for a key which is actually not present at all should
1400
# eventually converge
1401
parent_map, missing_keys = c_index.find_ancestry([key4], 0)
1402
self.assertEqual({key4: (key2, key3), key2: (key1,), key1: ()},
1404
self.assertEqual(set([key3]), missing_keys)
1406
def test__find_ancestors_empty_index(self):
1407
index = self.make_index('test', ref_lists=1, key_elements=1, nodes=[])
1409
missing_keys = set()
1410
search_keys = index._find_ancestors([('one',), ('two',)], 0, parent_map,
1412
self.assertEqual(set(), search_keys)
1413
self.assertEqual({}, parent_map)
1414
self.assertEqual(set([('one',), ('two',)]), missing_keys)
961
1417
class TestInMemoryGraphIndex(TestCaseWithMemoryTransport):