t/t0090-cache-tree.sh

   1 #!/bin/sh
   2
   3 test_description="Test whether cache-tree is properly updated
   4
   5 Tests whether various commands properly update and/or rewrite the
   6 cache-tree extension.
   7 "
   8  . ./test-lib.sh
   9
  10 cmp_cache_tree () {
  11         test-tool dump-cache-tree | sed -e '/#(ref)/d' >actual &&
  12         sed "s/$OID_REGEX/SHA/" <actual >filtered &&
  13         test_cmp "$1" filtered
  14 }
  15
  16 # We don't bother with actually checking the SHA1:
  17 # test-tool dump-cache-tree already verifies that all existing data is
  18 # correct.
  19 generate_expected_cache_tree_rec () {
  20         dir="$1${1:+/}" &&
  21         parent="$2" &&
  22         # ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
  23         # We want to count only foo because it's the only direct child
  24         subtrees=$(git ls-files|grep /|cut -d / -f 1|uniq) &&
  25         subtree_count=$(echo "$subtrees"|awk -v c=0 '$1 != "" {++c} END {print c}') &&
  26         entries=$(git ls-files|wc -l) &&
  27         printf "SHA $dir (%d entries, %d subtrees)\n" "$entries" "$subtree_count" &&
  28         for subtree in $subtrees
  29         do
  30                 cd "$subtree"
  31                 generate_expected_cache_tree_rec "$dir$subtree" "$dir" || return 1
  32                 cd ..
  33         done &&
  34         dir=$parent
  35 }
  36
  37 generate_expected_cache_tree () {
  38         (
  39                 generate_expected_cache_tree_rec
  40         )
  41 }
  42
  43 test_cache_tree () {
  44         generate_expected_cache_tree >expect &&
  45         cmp_cache_tree expect
  46 }
  47
  48 test_invalid_cache_tree () {
  49         printf "invalid                                  %s ()\n" "" "$@" >expect &&
  50         test-tool dump-cache-tree |
  51         sed -n -e "s/[0-9]* subtrees//" -e '/#(ref)/d' -e '/^invalid /p' >actual &&
  52         test_cmp expect actual
  53 }
  54
  55 test_no_cache_tree () {
  56         : >expect &&
  57         cmp_cache_tree expect
  58 }
  59
  60 test_expect_success 'initial commit has cache-tree' '
  61         test_commit foo &&
  62         test_cache_tree
  63 '
  64
  65 test_expect_success 'read-tree HEAD establishes cache-tree' '
  66         git read-tree HEAD &&
  67         test_cache_tree
  68 '
  69
  70 test_expect_success 'git-add invalidates cache-tree' '
  71         test_when_finished "git reset --hard; git read-tree HEAD" &&
  72         echo "I changed this file" >foo &&
  73         git add foo &&
  74         test_invalid_cache_tree
  75 '
  76
  77 test_expect_success 'git-add in subdir invalidates cache-tree' '
  78         test_when_finished "git reset --hard; git read-tree HEAD" &&
  79         mkdir dirx &&
  80         echo "I changed this file" >dirx/foo &&
  81         git add dirx/foo &&
  82         test_invalid_cache_tree
  83 '
  84
  85 cat >before <<\EOF
  86 SHA  (3 entries, 2 subtrees)
  87 SHA dir1/ (1 entries, 0 subtrees)
  88 SHA dir2/ (1 entries, 0 subtrees)
  89 EOF
  90
  91 cat >expect <<\EOF
  92 invalid                                   (2 subtrees)
  93 invalid                                  dir1/ (0 subtrees)
  94 SHA dir2/ (1 entries, 0 subtrees)
  95 EOF
  96
  97 test_expect_success 'git-add in subdir does not invalidate sibling cache-tree' '
  98         git tag no-children &&
  99         test_when_finished "git reset --hard no-children; git read-tree HEAD" &&
 100         mkdir dir1 dir2 &&
 101         test_commit dir1/a &&
 102         test_commit dir2/b &&
 103         echo "I changed this file" >dir1/a &&
 104         cmp_cache_tree before &&
 105         echo "I changed this file" >dir1/a &&
 106         git add dir1/a &&
 107         cmp_cache_tree expect
 108 '
 109
 110 test_expect_success 'update-index invalidates cache-tree' '
 111         test_when_finished "git reset --hard; git read-tree HEAD" &&
 112         echo "I changed this file" >foo &&
 113         git update-index --add foo &&
 114         test_invalid_cache_tree
 115 '
 116
 117 test_expect_success 'write-tree establishes cache-tree' '
 118         test-tool scrap-cache-tree &&
 119         git write-tree &&
 120         test_cache_tree
 121 '
 122
 123 test_expect_success 'test-tool scrap-cache-tree works' '
 124         git read-tree HEAD &&
 125         test-tool scrap-cache-tree &&
 126         test_no_cache_tree
 127 '
 128
 129 test_expect_success 'second commit has cache-tree' '
 130         test_commit bar &&
 131         test_cache_tree
 132 '
 133
 134 test_expect_success PERL 'commit --interactive gives cache-tree on partial commit' '
 135         cat <<-\EOT >foo.c &&
 136         int foo()
 137         {
 138                 return 42;
 139         }
 140         int bar()
 141         {
 142                 return 42;
 143         }
 144         EOT
 145         git add foo.c &&
 146         test_invalid_cache_tree &&
 147         git commit -m "add a file" &&
 148         test_cache_tree &&
 149         cat <<-\EOT >foo.c &&
 150         int foo()
 151         {
 152                 return 43;
 153         }
 154         int bar()
 155         {
 156                 return 44;
 157         }
 158         EOT
 159         test_write_lines p 1 "" s n y q |
 160         git commit --interactive -m foo &&
 161         test_cache_tree
 162 '
 163
 164 test_expect_success PERL 'commit -p with shrinking cache-tree' '
 165         mkdir -p deep/very-long-subdir &&
 166         echo content >deep/very-long-subdir/file &&
 167         git add deep &&
 168         git commit -m add &&
 169         git rm -r deep &&
 170
 171         before=$(wc -c <.git/index) &&
 172         git commit -m delete -p &&
 173         after=$(wc -c <.git/index) &&
 174
 175         # double check that the index shrank
 176         test $before -gt $after &&
 177
 178         # and that our index was not corrupted
 179         git fsck
 180 '
 181
 182 test_expect_success 'commit in child dir has cache-tree' '
 183         mkdir dir &&
 184         >dir/child.t &&
 185         git add dir/child.t &&
 186         git commit -m dir/child.t &&
 187         test_cache_tree
 188 '
 189
 190 test_expect_success 'reset --hard gives cache-tree' '
 191         test-tool scrap-cache-tree &&
 192         git reset --hard &&
 193         test_cache_tree
 194 '
 195
 196 test_expect_success 'reset --hard without index gives cache-tree' '
 197         rm -f .git/index &&
 198         git reset --hard &&
 199         test_cache_tree
 200 '
 201
 202 test_expect_success 'checkout gives cache-tree' '
 203         git tag current &&
 204         git checkout HEAD^ &&
 205         test_cache_tree
 206 '
 207
 208 test_expect_success 'checkout -b gives cache-tree' '
 209         git checkout current &&
 210         git checkout -b prev HEAD^ &&
 211         test_cache_tree
 212 '
 213
 214 test_expect_success 'checkout -B gives cache-tree' '
 215         git checkout current &&
 216         git checkout -B prev HEAD^ &&
 217         test_cache_tree
 218 '
 219
 220 test_expect_success 'merge --ff-only maintains cache-tree' '
 221         git checkout current &&
 222         git checkout -b changes &&
 223         test_commit llamas &&
 224         test_commit pachyderm &&
 225         test_cache_tree &&
 226         git checkout current &&
 227         test_cache_tree &&
 228         git merge --ff-only changes &&
 229         test_cache_tree
 230 '
 231
 232 test_expect_success 'merge maintains cache-tree' '
 233         git checkout current &&
 234         git checkout -b changes2 &&
 235         test_commit alpacas &&
 236         test_cache_tree &&
 237         git checkout current &&
 238         test_commit struthio &&
 239         test_cache_tree &&
 240         git merge changes2 &&
 241         test_cache_tree
 242 '
 243
 244 test_expect_success 'partial commit gives cache-tree' '
 245         git checkout -b partial no-children &&
 246         test_commit one &&
 247         test_commit two &&
 248         echo "some change" >one.t &&
 249         git add one.t &&
 250         echo "some other change" >two.t &&
 251         git commit two.t -m partial &&
 252         test_cache_tree
 253 '
 254
 255 test_expect_success 'no phantom error when switching trees' '
 256         mkdir newdir &&
 257         >newdir/one &&
 258         git add newdir/one &&
 259         git checkout 2>errors &&
 260         test_must_be_empty errors
 261 '
 262
 263 test_expect_success 'switching trees does not invalidate shared index' '
 264         (
 265                 sane_unset GIT_TEST_SPLIT_INDEX &&
 266                 git update-index --split-index &&
 267                 >split &&
 268                 git add split &&
 269                 test-tool dump-split-index .git/index | grep -v ^own >before &&
 270                 git commit -m "as-is" &&
 271                 test-tool dump-split-index .git/index | grep -v ^own >after &&
 272                 test_cmp before after
 273         )
 274 '
 275
 276 test_done