t/t7008-filter-branch-null-sha1.sh

   1 #!/bin/sh
   2
   3 test_description='filter-branch removal of trees with null sha1'
   4
   5 . ./test-lib.sh
   6
   7 test_expect_success 'setup: base commits' '
   8         test_commit one &&
   9         test_commit two &&
  10         test_commit three
  11 '
  12
  13 test_expect_success 'setup: a commit with a bogus null sha1 in the tree' '
  14         {
  15                 git ls-tree HEAD &&
  16                 printf "160000 commit $ZERO_OID\\tbroken\\n"
  17         } >broken-tree &&
  18         echo "add broken entry" >msg &&
  19
  20         tree=$(git mktree <broken-tree) &&
  21         test_tick &&
  22         commit=$(git commit-tree $tree -p HEAD <msg) &&
  23         git update-ref HEAD "$commit"
  24 '
  25
  26 # we have to make one more commit on top removing the broken
  27 # entry, since otherwise our index does not match HEAD (and filter-branch will
  28 # complain). We could make the index match HEAD, but doing so would involve
  29 # writing a null sha1 into the index.
  30 test_expect_success 'setup: bring HEAD and index in sync' '
  31         test_tick &&
  32         git commit -a -m "back to normal"
  33 '
  34
  35 test_expect_success 'noop filter-branch complains' '
  36         test_must_fail git filter-branch \
  37                 --force --prune-empty \
  38                 --index-filter "true"
  39 '
  40
  41 test_expect_success 'filter commands are still checked' '
  42         test_must_fail git filter-branch \
  43                 --force --prune-empty \
  44                 --index-filter "git rm --cached --ignore-unmatch three.t"
  45 '
  46
  47 test_expect_success 'removing the broken entry works' '
  48         echo three >expect &&
  49         git filter-branch \
  50                 --force --prune-empty \
  51                 --index-filter "git rm --cached --ignore-unmatch broken" &&
  52         git log -1 --format=%s >actual &&
  53         test_cmp expect actual
  54 '
  55
  56 test_done