comparison tests/test-branches.t @ 28558:bcd106d456c4

cache: rebuild branch cache from scratch when inconsistencies are detected

This should recover automatically from some corruptions that for unknown
reasons are seen in the wild.

28557:4b83507bfc91

situation where the cache is out of sync and the hash check detects it
  $ hg --config extensions.strip= strip -r tip --nob
  $ f --size .hg/cache/rbc-revs*
  .hg/cache/rbc-revs-v1: size=112

  $ cd ..

28558:bcd106d456c4

situation where the cache is out of sync and the hash check detects it
  $ hg --config extensions.strip= strip -r tip --nob
  $ f --size .hg/cache/rbc-revs*
  .hg/cache/rbc-revs-v1: size=112

cache is rebuilt when corruption is detected
  $ echo > .hg/cache/rbc-names-v1
  $ hg log -r '5:&branch(.)' -T '{rev} ' --debug
  rebuilding corrupted revision branch cache
  8 9 10 11 12 13 truncating cache/rbc-revs-v1 to 40
  $ f --size --hexdump .hg/cache/rbc-*
  .hg/cache/rbc-names-v1: size=79
  0000: 62 00 61 00 63 00 61 20 62 72 61 6e 63 68 20 6e |b.a.c.a branch n|
  0010: 61 6d 65 20 6d 75 63 68 20 6c 6f 6e 67 65 72 20 |ame much longer |
  0020: 74 68 61 6e 20 74 68 65 20 64 65 66 61 75 6c 74 |than the default|
  0030: 20 6a 75 73 74 69 66 69 63 61 74 69 6f 6e 20 75 | justification u|
  0040: 73 65 64 20 62 79 20 62 72 61 6e 63 68 65 73    |sed by branches|
  .hg/cache/rbc-revs-v1: size=112
  0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
  0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
  0020: 00 00 00 00 00 00 00 00 d8 cb c6 1d 00 00 00 01 |................|
  0030: 58 97 36 a2 00 00 00 02 10 ff 58 95 00 00 00 03 |X.6.......X.....|
  0040: ee bb 94 44 00 00 00 00 5f 40 61 bb 00 00 00 00 |...D...._@a.....|
  0050: bf be 84 1b 00 00 00 00 d3 f1 63 45 80 00 00 00 |..........cE....|
  0060: e3 d4 9c 05 80 00 00 00 e2 3b 55 05 00 00 00 00 |.........;U.....|

  $ cd ..