During the commit process, the cache-tree is updated. We need to write
this updated cache-tree so that it's ready for subsequent commands.
Add test code which demonstrates that git commit now writes the cache
tree. Also demonstrate that cache-tree invalidation is correct.
Signed-off-by: David Turner <dturner@xxxxxxxxxxx>
---
builtin/commit.c | 6 ++++++
t/t0090-cache-tree.sh | 50 +++++++++++++++++++++++++++++++++++++++++++++++---
2 files changed, 53 insertions(+), 3 deletions(-)
diff --git a/builtin/commit.c b/builtin/commit.c
index 9cfef6c..6814e87 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -607,6 +607,8 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
const char *hook_arg2 = NULL;
int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
int old_display_comment_prefix;
+ static struct lock_file index_lock;
+ int index_fd;
/* This checks and barfs if author is badly specified */
determine_author_info(author_ident);
@@ -872,6 +874,10 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
error(_("Error building trees"));
return 0;
}
+ /* After updating the cache-tree, rewrite the index */
+ index_fd = hold_locked_index(&index_lock, 0);
+ if (index_fd >= 0 && write_index(&the_index, index_fd) >= 0)
+ commit_locked_index(&index_lock);
if (run_commit_hook(use_editor, index_file, "prepare-commit-msg",
git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
index 5383258..ef012b9 100755
--- a/t/t0090-cache-tree.sh
+++ b/t/t0090-cache-tree.sh
@@ -16,8 +16,31 @@ cmp_cache_tree () {
# We don't bother with actually checking the SHA1:
# test-dump-cache-tree already verifies that all existing data is
# correct.
+generate_expected_cache_tree () {
+ if [ -n "$1" ]
+ then
+ local dir="$1/"
+ else
+ local dir="$1"
+ fi
+ # ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
+ # We want to count only foo because it's the only direct child
+ local subtrees=$(git ls-files|egrep '/' |cut -d / -f 1|uniq) &&
+ local subtree_count=$(echo "$subtrees"|grep -c .) &&
+ local files_count=$(git ls-files|grep -v /|wc -l) &&
+ local entries=$(expr "$subtree_count" + "$files_count") &&
+ printf "SHA $dir (%d entries, %d subtrees)\n" $entries $subtree_count &&
+ local subtree &&
+ for subtree in $subtrees
+ do
+ cd "$subtree"
+ generate_expected_cache_tree "$dir$subtree" || return 1
+ cd ..
+ done
+}
+
test_shallow_cache_tree () {
- printf "SHA (%d entries, 0 subtrees)\n" $(git ls-files|wc -l) >expect &&
+ generate_expected_cache_tree > expect &&
cmp_cache_tree expect
}
@@ -35,7 +58,7 @@ test_no_cache_tree () {
cmp_cache_tree expect
}
-test_expect_failure 'initial commit has cache-tree' '
+test_expect_success 'initial commit has cache-tree' '
test_commit foo &&
test_shallow_cache_tree
'
@@ -60,15 +83,28 @@ test_expect_success 'git-add in subdir invalidates cache-tree' '
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 &&
+ cmp_cache_tree before &&
echo "I changed this file" > dir1/a &&
git add dir1/a &&
- test_invalid_cache_tree dir1/
+ cmp_cache_tree expect
'
test_expect_success 'update-index invalidates cache-tree' '
@@ -95,6 +131,14 @@ test_expect_success 'second commit has cache-tree' '
test_shallow_cache_tree
'
+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_shallow_cache_tree
+'
+
test_expect_success 'reset --hard gives cache-tree' '
test-scrap-cache-tree &&
git reset --hard &&
--
2.0.0.390.gcb682f8
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