t/t5309-pack-delta-cycles.sh

   1 #!/bin/sh
   2
   3 test_description='test index-pack handling of delta cycles in packfiles'
   4 . ./test-lib.sh
   5 . "$TEST_DIRECTORY"/lib-pack.sh
   6
   7 if ! test_have_prereq SHA1
   8 then
   9        skip_all='not using SHA-1 for objects'
  10        test_done
  11 fi
  12
  13 # Two similar-ish objects that we have computed deltas between.
  14 A=01d7713666f4de822776c7622c10f1b07de280dc
  15 B=e68fe8129b546b101aee9510c5328e7f21ca1d18
  16
  17 # double-check our hand-constucted packs
  18 test_expect_success 'index-pack works with a single delta (A->B)' '
  19         clear_packs &&
  20         {
  21                 pack_header 2 &&
  22                 pack_obj $A $B &&
  23                 pack_obj $B
  24         } >ab.pack &&
  25         pack_trailer ab.pack &&
  26         git index-pack --stdin <ab.pack &&
  27         git cat-file -t $A &&
  28         git cat-file -t $B
  29 '
  30
  31 test_expect_success 'index-pack works with a single delta (B->A)' '
  32         clear_packs &&
  33         {
  34                 pack_header 2 &&
  35                 pack_obj $A &&
  36                 pack_obj $B $A
  37         } >ba.pack &&
  38         pack_trailer ba.pack &&
  39         git index-pack --stdin <ba.pack &&
  40         git cat-file -t $A &&
  41         git cat-file -t $B
  42 '
  43
  44 test_expect_success 'index-pack detects missing base objects' '
  45         clear_packs &&
  46         {
  47                 pack_header 1 &&
  48                 pack_obj $A $B
  49         } >missing.pack &&
  50         pack_trailer missing.pack &&
  51         test_must_fail git index-pack --fix-thin --stdin <missing.pack
  52 '
  53
  54 test_expect_success 'index-pack detects REF_DELTA cycles' '
  55         clear_packs &&
  56         {
  57                 pack_header 2 &&
  58                 pack_obj $A $B &&
  59                 pack_obj $B $A
  60         } >cycle.pack &&
  61         pack_trailer cycle.pack &&
  62         test_must_fail git index-pack --fix-thin --stdin <cycle.pack
  63 '
  64
  65 test_expect_success 'failover to an object in another pack' '
  66         clear_packs &&
  67         git index-pack --stdin <ab.pack &&
  68         test_must_fail git index-pack --stdin --fix-thin <cycle.pack
  69 '
  70
  71 test_expect_success 'failover to a duplicate object in the same pack' '
  72         clear_packs &&
  73         {
  74                 pack_header 3 &&
  75                 pack_obj $A $B &&
  76                 pack_obj $B $A &&
  77                 pack_obj $A
  78         } >recoverable.pack &&
  79         pack_trailer recoverable.pack &&
  80         test_must_fail git index-pack --fix-thin --stdin <recoverable.pack
  81 '
  82
  83 test_done