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-rwxr-xr-xt/t0090-cache-tree.sh277
1 files changed, 277 insertions, 0 deletions
diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
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@@ -0,0 +1,277 @@
+#!/bin/sh
+
+test_description="Test whether cache-tree is properly updated
+
+Tests whether various commands properly update and/or rewrite the
+cache-tree extension.
+"
+ . ./test-lib.sh
+
+cmp_cache_tree () {
+ test-tool dump-cache-tree | sed -e '/#(ref)/d' >actual &&
+ sed "s/$OID_REGEX/SHA/" <actual >filtered &&
+ test_cmp "$1" filtered
+}
+
+# We don't bother with actually checking the SHA1:
+# test-tool dump-cache-tree already verifies that all existing data is
+# correct.
+generate_expected_cache_tree_rec () {
+ dir="$1${1:+/}" &&
+ parent="$2" &&
+ # ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
+ # We want to count only foo because it's the only direct child
+ git ls-files >files &&
+ subtrees=$(grep / files|cut -d / -f 1|uniq) &&
+ subtree_count=$(echo "$subtrees"|awk -v c=0 '$1 != "" {++c} END {print c}') &&
+ entries=$(wc -l <files) &&
+ printf "SHA $dir (%d entries, %d subtrees)\n" "$entries" "$subtree_count" &&
+ for subtree in $subtrees
+ do
+ cd "$subtree"
+ generate_expected_cache_tree_rec "$dir$subtree" "$dir" || return 1
+ cd ..
+ done &&
+ dir=$parent
+}
+
+generate_expected_cache_tree () {
+ (
+ generate_expected_cache_tree_rec
+ )
+}
+
+test_cache_tree () {
+ generate_expected_cache_tree >expect &&
+ cmp_cache_tree expect
+}
+
+test_invalid_cache_tree () {
+ printf "invalid %s ()\n" "" "$@" >expect &&
+ test-tool dump-cache-tree |
+ sed -n -e "s/[0-9]* subtrees//" -e '/#(ref)/d' -e '/^invalid /p' >actual &&
+ test_cmp expect actual
+}
+
+test_no_cache_tree () {
+ : >expect &&
+ cmp_cache_tree expect
+}
+
+test_expect_success 'initial commit has cache-tree' '
+ test_commit foo &&
+ test_cache_tree
+'
+
+test_expect_success 'read-tree HEAD establishes cache-tree' '
+ git read-tree HEAD &&
+ test_cache_tree
+'
+
+test_expect_success 'git-add invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ echo "I changed this file" >foo &&
+ git add foo &&
+ test_invalid_cache_tree
+'
+
+test_expect_success 'git-add in subdir invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ mkdir dirx &&
+ echo "I changed this file" >dirx/foo &&
+ git add dirx/foo &&
+ test_invalid_cache_tree
+'
+
+cat >before <<\EOF
+SHA (3 entries, 2 subtrees)
+SHA dir1/ (1 entries, 0 subtrees)
+SHA dir2/ (1 entries, 0 subtrees)
+EOF
+
+cat >expect <<\EOF
+invalid (2 subtrees)
+invalid dir1/ (0 subtrees)
+SHA dir2/ (1 entries, 0 subtrees)
+EOF
+
+test_expect_success 'git-add in subdir does not invalidate sibling cache-tree' '
+ git tag no-children &&
+ test_when_finished "git reset --hard no-children; git read-tree HEAD" &&
+ mkdir dir1 dir2 &&
+ test_commit dir1/a &&
+ test_commit dir2/b &&
+ echo "I changed this file" >dir1/a &&
+ cmp_cache_tree before &&
+ echo "I changed this file" >dir1/a &&
+ git add dir1/a &&
+ cmp_cache_tree expect
+'
+
+test_expect_success 'update-index invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ echo "I changed this file" >foo &&
+ git update-index --add foo &&
+ test_invalid_cache_tree
+'
+
+test_expect_success 'write-tree establishes cache-tree' '
+ test-tool scrap-cache-tree &&
+ git write-tree &&
+ test_cache_tree
+'
+
+test_expect_success 'test-tool scrap-cache-tree works' '
+ git read-tree HEAD &&
+ test-tool scrap-cache-tree &&
+ test_no_cache_tree
+'
+
+test_expect_success 'second commit has cache-tree' '
+ test_commit bar &&
+ test_cache_tree
+'
+
+test_expect_success PERL 'commit --interactive gives cache-tree on partial commit' '
+ cat <<-\EOT >foo.c &&
+ int foo()
+ {
+ return 42;
+ }
+ int bar()
+ {
+ return 42;
+ }
+ EOT
+ git add foo.c &&
+ test_invalid_cache_tree &&
+ git commit -m "add a file" &&
+ test_cache_tree &&
+ cat <<-\EOT >foo.c &&
+ int foo()
+ {
+ return 43;
+ }
+ int bar()
+ {
+ return 44;
+ }
+ EOT
+ test_write_lines p 1 "" s n y q |
+ git commit --interactive -m foo &&
+ test_cache_tree
+'
+
+test_expect_success PERL 'commit -p with shrinking cache-tree' '
+ mkdir -p deep/very-long-subdir &&
+ echo content >deep/very-long-subdir/file &&
+ git add deep &&
+ git commit -m add &&
+ git rm -r deep &&
+
+ before=$(wc -c <.git/index) &&
+ git commit -m delete -p &&
+ after=$(wc -c <.git/index) &&
+
+ # double check that the index shrank
+ test $before -gt $after &&
+
+ # and that our index was not corrupted
+ git fsck
+'
+
+test_expect_success 'commit in child dir has cache-tree' '
+ mkdir dir &&
+ >dir/child.t &&
+ git add dir/child.t &&
+ git commit -m dir/child.t &&
+ test_cache_tree
+'
+
+test_expect_success 'reset --hard gives cache-tree' '
+ test-tool scrap-cache-tree &&
+ git reset --hard &&
+ test_cache_tree
+'
+
+test_expect_success 'reset --hard without index gives cache-tree' '
+ rm -f .git/index &&
+ git reset --hard &&
+ test_cache_tree
+'
+
+test_expect_success 'checkout gives cache-tree' '
+ git tag current &&
+ git checkout HEAD^ &&
+ test_cache_tree
+'
+
+test_expect_success 'checkout -b gives cache-tree' '
+ git checkout current &&
+ git checkout -b prev HEAD^ &&
+ test_cache_tree
+'
+
+test_expect_success 'checkout -B gives cache-tree' '
+ git checkout current &&
+ git checkout -B prev HEAD^ &&
+ test_cache_tree
+'
+
+test_expect_success 'merge --ff-only maintains cache-tree' '
+ git checkout current &&
+ git checkout -b changes &&
+ test_commit llamas &&
+ test_commit pachyderm &&
+ test_cache_tree &&
+ git checkout current &&
+ test_cache_tree &&
+ git merge --ff-only changes &&
+ test_cache_tree
+'
+
+test_expect_success 'merge maintains cache-tree' '
+ git checkout current &&
+ git checkout -b changes2 &&
+ test_commit alpacas &&
+ test_cache_tree &&
+ git checkout current &&
+ test_commit struthio &&
+ test_cache_tree &&
+ git merge changes2 &&
+ test_cache_tree
+'
+
+test_expect_success 'partial commit gives cache-tree' '
+ git checkout -b partial no-children &&
+ test_commit one &&
+ test_commit two &&
+ echo "some change" >one.t &&
+ git add one.t &&
+ echo "some other change" >two.t &&
+ git commit two.t -m partial &&
+ test_cache_tree
+'
+
+test_expect_success 'no phantom error when switching trees' '
+ mkdir newdir &&
+ >newdir/one &&
+ git add newdir/one &&
+ git checkout 2>errors &&
+ test_must_be_empty errors
+'
+
+test_expect_success 'switching trees does not invalidate shared index' '
+ (
+ sane_unset GIT_TEST_SPLIT_INDEX &&
+ git update-index --split-index &&
+ >split &&
+ git add split &&
+ test-tool dump-split-index .git/index | grep -v ^own >before &&
+ git commit -m "as-is" &&
+ test-tool dump-split-index .git/index | grep -v ^own >after &&
+ test_cmp before after
+ )
+'
+
+test_done