pack-objects: document about thread synchronization

diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
index d0d2e4f7ec3310ec51da7144fa87151129f393c0..d2e49f763263333e8e269051686d3b8b2cae44ba 100755 (executable)
--- a/t/t2025-worktree-add.sh
+++ b/t/t2025-worktree-add.sh
@@ -198,13 +198,25 @@ test_expect_success '"add" with <branch> omitted' '
        test_cmp_rev HEAD bat
 '
 
-test_expect_success '"add" auto-vivify does not clobber existing branch' '
-       test_commit c1 &&
-       test_commit c2 &&
-       git branch precious HEAD~1 &&
-       test_must_fail git worktree add precious &&
-       test_cmp_rev HEAD~1 precious &&
-       test_path_is_missing precious
+test_expect_success '"add" checks out existing branch of dwimd name' '
+       git branch dwim HEAD~1 &&
+       git worktree add dwim &&
+       test_cmp_rev HEAD~1 dwim &&
+       (
+               cd dwim &&
+               test_cmp_rev HEAD dwim
+       )
+'
+
+test_expect_success '"add <path>" dwim fails with checked out branch' '
+       git checkout -b test-branch &&
+       test_must_fail git worktree add test-branch &&
+       test_path_is_missing test-branch
+'
+
+test_expect_success '"add --force" with existing dwimd name doesnt die' '
+       git checkout test-branch &&
+       git worktree add --force test-branch
 '
 
 test_expect_success '"add" no auto-vivify with --detach and <branch> omitted' '
@@ -465,7 +477,7 @@ post_checkout_hook () {
 test_expect_success '"add" invokes post-checkout hook (branch)' '
        post_checkout_hook &&
        {
-               echo $_z40 $(git rev-parse HEAD) 1 &&
+               echo $ZERO_OID $(git rev-parse HEAD) 1 &&
                echo $(pwd)/.git/worktrees/gumby &&
                echo $(pwd)/gumby
        } >hook.expect &&
@@ -476,7 +488,7 @@ test_expect_success '"add" invokes post-checkout hook (branch)' '
 test_expect_success '"add" invokes post-checkout hook (detached)' '
        post_checkout_hook &&
        {
-               echo $_z40 $(git rev-parse HEAD) 1 &&
+               echo $ZERO_OID $(git rev-parse HEAD) 1 &&
                echo $(pwd)/.git/worktrees/grumpy &&
                echo $(pwd)/grumpy
        } >hook.expect &&
@@ -494,7 +506,7 @@ test_expect_success '"add --no-checkout" suppresses post-checkout hook' '
 test_expect_success '"add" in other worktree invokes post-checkout hook' '
        post_checkout_hook &&
        {
-               echo $_z40 $(git rev-parse HEAD) 1 &&
+               echo $ZERO_OID $(git rev-parse HEAD) 1 &&
                echo $(pwd)/.git/worktrees/guppy &&
                echo $(pwd)/guppy
        } >hook.expect &&
@@ -506,7 +518,7 @@ test_expect_success '"add" in bare repo invokes post-checkout hook' '
        rm -rf bare &&
        git clone --bare . bare &&
        {
-               echo $_z40 $(git --git-dir=bare rev-parse HEAD) 1 &&
+               echo $ZERO_OID $(git --git-dir=bare rev-parse HEAD) 1 &&
                echo $(pwd)/bare/worktrees/goozy &&
                echo $(pwd)/goozy
        } >hook.expect &&