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 . "$TEST_DIRECTORY"/lib-pack.sh
   6
   7 # Two similar-ish objects that we have computed deltas between.
   8 A=$(test_oid packlib_7_0)
   9 B=$(test_oid packlib_7_76)
  10
  11 # double-check our hand-constucted packs
  12 test_expect_success 'index-pack works with a single delta (A->B)' '
  13         clear_packs &&
  14         {
  15                 pack_header 2 &&
  16                 pack_obj $A $B &&
  17                 pack_obj $B
  18         } >ab.pack &&
  19         pack_trailer ab.pack &&
  20         git index-pack --stdin <ab.pack &&
  21         git cat-file -t $A &&
  22         git cat-file -t $B
  23 '
  24
  25 test_expect_success 'index-pack works with a single delta (B->A)' '
  26         clear_packs &&
  27         {
  28                 pack_header 2 &&
  29                 pack_obj $A &&
  30                 pack_obj $B $A
  31         } >ba.pack &&
  32         pack_trailer ba.pack &&
  33         git index-pack --stdin <ba.pack &&
  34         git cat-file -t $A &&
  35         git cat-file -t $B
  36 '
  37
  38 test_expect_success 'index-pack detects missing base objects' '
  39         clear_packs &&
  40         {
  41                 pack_header 1 &&
  42                 pack_obj $A $B
  43         } >missing.pack &&
  44         pack_trailer missing.pack &&
  45         test_must_fail git index-pack --fix-thin --stdin <missing.pack
  46 '
  47
  48 test_expect_success 'index-pack detects REF_DELTA cycles' '
  49         clear_packs &&
  50         {
  51                 pack_header 2 &&
  52                 pack_obj $A $B &&
  53                 pack_obj $B $A
  54         } >cycle.pack &&
  55         pack_trailer cycle.pack &&
  56         test_must_fail git index-pack --fix-thin --stdin <cycle.pack
  57 '
  58
  59 test_expect_success 'failover to an object in another pack' '
  60         clear_packs &&
  61         git index-pack --stdin <ab.pack &&
  62         test_must_fail git index-pack --stdin --fix-thin <cycle.pack
  63 '
  64
  65 test_expect_success 'failover to a duplicate object in the same pack' '
  66         clear_packs &&
  67         {
  68                 pack_header 3 &&
  69                 pack_obj $A $B &&
  70                 pack_obj $B $A &&
  71                 pack_obj $A
  72         } >recoverable.pack &&
  73         pack_trailer recoverable.pack &&
  74         test_must_fail git index-pack --fix-thin --stdin <recoverable.pack
  75 '
  76
  77 test_done