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