From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Fedor Biryukov" <fedor.birjukov@gmail.com>,
"Elijah Newren" <newren@gmail.com>,
"Elijah Newren" <newren@gmail.com>
Subject: [PATCH 1/6] t2500: add various tests for nuking untracked files
Date: Sat, 18 Sep 2021 23:15:18 +0000 [thread overview]
Message-ID: <b634136a74b37a6f73bc3038f79031e040423883.1632006923.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1036.git.1632006923.gitgitgadget@gmail.com>
From: Elijah Newren <newren@gmail.com>
Noting that unpack_trees treats reset=1 & update=1 as license to nuke
untracked files, I looked for code paths that use this combination and
tried to generate testcases which demonstrated unintentional loss of
untracked files and directories. I found several.
I also include testcases for `git reset --{hard,merge,keep}`. A hard
reset is perhaps the most direct test of unpack_tree's reset=1 behavior,
but we cannot make `git reset --hard` preserve untracked files without
some migration work.
Also, the two commands `checkout --force` (because of the --force) and
`read-tree --reset` (because it's plumbing and we need to keep it
backward compatible) were left out as we expect those to continue
removing untracked files and directories.
Signed-off-by: Elijah Newren <newren@gmail.com>
---
t/t2500-untracked-overwriting.sh | 244 +++++++++++++++++++++++++++++++
1 file changed, 244 insertions(+)
create mode 100755 t/t2500-untracked-overwriting.sh
diff --git a/t/t2500-untracked-overwriting.sh b/t/t2500-untracked-overwriting.sh
new file mode 100755
index 00000000000..a1a6dfa671e
--- /dev/null
+++ b/t/t2500-untracked-overwriting.sh
@@ -0,0 +1,244 @@
+#!/bin/sh
+
+test_description='Test handling of overwriting untracked files'
+
+. ./test-lib.sh
+
+test_setup_reset () {
+ test_create_repo reset_$1 &&
+ (
+ cd reset_$1 &&
+ test_commit init &&
+
+ git branch stable &&
+ git branch work &&
+
+ git checkout work &&
+ test_commit foo &&
+
+ git checkout stable
+ )
+}
+
+test_expect_success 'reset --hard will nuke untracked files/dirs' '
+ test_setup_reset hard &&
+ (
+ cd reset_hard &&
+ git ls-tree -r stable &&
+ git log --all --name-status --oneline &&
+ git ls-tree -r work &&
+
+ mkdir foo.t &&
+ echo precious >foo.t/file &&
+ echo foo >expect &&
+
+ git reset --hard work &&
+
+ # check that untracked directory foo.t/ was nuked
+ test_path_is_file foo.t &&
+ test_cmp expect foo.t
+ )
+'
+
+test_expect_success 'reset --merge will preserve untracked files/dirs' '
+ test_setup_reset merge &&
+ (
+ cd reset_merge &&
+
+ mkdir foo.t &&
+ echo precious >foo.t/file &&
+ cp foo.t/file expect &&
+
+ test_must_fail git reset --merge work 2>error &&
+ test_cmp expect foo.t/file &&
+ grep "Updating.*foo.t.*would lose untracked files" error
+ )
+'
+
+test_expect_success 'reset --keep will preserve untracked files/dirs' '
+ test_setup_reset keep &&
+ (
+ cd reset_keep &&
+
+ mkdir foo.t &&
+ echo precious >foo.t/file &&
+ cp foo.t/file expect &&
+
+ test_must_fail git reset --merge work 2>error &&
+ test_cmp expect foo.t/file &&
+ grep "Updating.*foo.t.*would lose untracked files" error
+ )
+'
+
+test_setup_checkout_m () {
+ test_create_repo checkout &&
+ (
+ cd checkout &&
+ test_commit init &&
+
+ test_write_lines file has some >filler &&
+ git add filler &&
+ git commit -m filler &&
+
+ git branch stable &&
+
+ git switch -c work &&
+ echo stuff >notes.txt &&
+ test_write_lines file has some words >filler &&
+ git add notes.txt filler &&
+ git commit -m filler &&
+
+ git checkout stable
+ )
+}
+
+test_expect_failure 'checkout -m does not nuke untracked file' '
+ test_setup_checkout_m &&
+ (
+ cd checkout &&
+
+ # Tweak filler
+ test_write_lines this file has some >filler &&
+ # Make an untracked file, save its contents in "expect"
+ echo precious >notes.txt &&
+ cp notes.txt expect &&
+
+ test_must_fail git checkout -m work &&
+ test_cmp expect notes.txt
+ )
+'
+
+test_setup_sequencing () {
+ test_create_repo sequencing_$1 &&
+ (
+ cd sequencing_$1 &&
+ test_commit init &&
+
+ test_write_lines this file has some words >filler &&
+ git add filler &&
+ git commit -m filler &&
+
+ mkdir -p foo/bar &&
+ test_commit foo/bar/baz &&
+
+ git branch simple &&
+ git branch fooey &&
+
+ git checkout fooey &&
+ git rm foo/bar/baz.t &&
+ echo stuff >>filler &&
+ git add -u &&
+ git commit -m "changes" &&
+
+ git checkout simple &&
+ echo items >>filler &&
+ echo newstuff >>newfile &&
+ git add filler newfile &&
+ git commit -m another
+ )
+}
+
+test_expect_failure 'git rebase --abort and untracked files' '
+ test_setup_sequencing rebase_abort_and_untracked &&
+ (
+ cd sequencing_rebase_abort_and_untracked &&
+ git checkout fooey &&
+ test_must_fail git rebase simple &&
+
+ cat init.t &&
+ git rm init.t &&
+ echo precious >init.t &&
+ cp init.t expect &&
+ git status --porcelain &&
+ test_must_fail git rebase --abort &&
+ test_cmp expect init.t
+ )
+'
+
+test_expect_failure 'git rebase fast forwarding and untracked files' '
+ test_setup_sequencing rebase_fast_forward_and_untracked &&
+ (
+ cd sequencing_rebase_fast_forward_and_untracked &&
+ git checkout init &&
+ echo precious >filler &&
+ cp filler expect &&
+ test_must_fail git rebase init simple &&
+ test_cmp expect filler
+ )
+'
+
+test_expect_failure 'git rebase --autostash and untracked files' '
+ test_setup_sequencing rebase_autostash_and_untracked &&
+ (
+ cd sequencing_rebase_autostash_and_untracked &&
+ git checkout simple &&
+ git rm filler &&
+ mkdir filler &&
+ echo precious >filler/file &&
+ cp filler/file expect &&
+ git rebase --autostash init &&
+ test_path_is_file filler/file
+ )
+'
+
+test_expect_failure 'git stash and untracked files' '
+ test_setup_sequencing stash_and_untracked_files &&
+ (
+ cd sequencing_stash_and_untracked_files &&
+ git checkout simple &&
+ git rm filler &&
+ mkdir filler &&
+ echo precious >filler/file &&
+ cp filler/file expect &&
+ git status --porcelain &&
+ git stash push &&
+ git status --porcelain &&
+ test_path_is_file filler/file
+ )
+'
+
+test_expect_failure 'git am --abort and untracked dir vs. unmerged file' '
+ test_setup_sequencing am_abort_and_untracked &&
+ (
+ cd sequencing_am_abort_and_untracked &&
+ git format-patch -1 --stdout fooey >changes.mbox &&
+ test_must_fail git am --3way changes.mbox &&
+
+ # Delete the conflicted file; we will stage and commit it later
+ rm filler &&
+
+ # Put an unrelated untracked directory there
+ mkdir filler &&
+ echo foo >filler/file1 &&
+ echo bar >filler/file2 &&
+
+ test_must_fail git am --abort 2>errors &&
+ test_path_is_dir filler &&
+ grep "Updating .filler. would lose untracked files in it" errors
+ )
+'
+
+test_expect_failure 'git am --skip and untracked dir vs deleted file' '
+ test_setup_sequencing am_skip_and_untracked &&
+ (
+ cd sequencing_am_skip_and_untracked &&
+ git checkout fooey &&
+ git format-patch -1 --stdout simple >changes.mbox &&
+ test_must_fail git am --3way changes.mbox &&
+
+ # Delete newfile
+ rm newfile &&
+
+ # Put an unrelated untracked directory there
+ mkdir newfile &&
+ echo foo >newfile/file1 &&
+ echo bar >newfile/file2 &&
+
+ # Change our mind about resolutions, just skip this patch
+ test_must_fail git am --skip 2>errors &&
+ test_path_is_dir newfile &&
+ grep "Updating .newfile. would lose untracked files in it" errors
+ )
+'
+
+test_done
--
gitgitgadget
next prev parent reply other threads:[~2021-09-18 23:15 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-18 23:15 [PATCH 0/6] Fix various issues around removal of untracked files/directories Elijah Newren via GitGitGadget
2021-09-18 23:15 ` Elijah Newren via GitGitGadget [this message]
2021-09-19 13:44 ` [PATCH 1/6] t2500: add various tests for nuking untracked files Ævar Arnfjörð Bjarmason
2021-09-20 14:48 ` Elijah Newren
2021-09-18 23:15 ` [PATCH 2/6] Split unpack_trees 'reset' flag into two for untracked handling Elijah Newren via GitGitGadget
2021-09-19 13:48 ` Ævar Arnfjörð Bjarmason
2021-09-20 15:20 ` Elijah Newren
2021-09-20 10:19 ` Phillip Wood
2021-09-20 16:05 ` Elijah Newren
2021-09-20 18:11 ` Phillip Wood
2021-09-24 2:27 ` Elijah Newren
2021-09-18 23:15 ` [PATCH 3/6] unpack-trees: avoid nuking untracked dir in way of unmerged file Elijah Newren via GitGitGadget
2021-09-18 23:15 ` [PATCH 4/6] unpack-trees: avoid nuking untracked dir in way of locally deleted file Elijah Newren via GitGitGadget
2021-09-19 13:52 ` Ævar Arnfjörð Bjarmason
2021-09-20 16:12 ` Elijah Newren
2021-09-18 23:15 ` [PATCH 5/6] Comment important codepaths regarding nuking untracked files/dirs Elijah Newren via GitGitGadget
2021-09-24 11:47 ` Luke Diamand
2021-09-24 13:41 ` Elijah Newren
2021-09-18 23:15 ` [PATCH 6/6] Documentation: call out commands that nuke untracked files/directories Elijah Newren via GitGitGadget
2021-09-19 10:52 ` Philip Oakley
2021-09-19 13:36 ` Philip Oakley
2021-09-20 16:29 ` Elijah Newren
2021-09-24 6:37 ` [PATCH v2 0/6] Fix various issues around removal of " Elijah Newren via GitGitGadget
2021-09-24 6:37 ` [PATCH v2 1/6] t2500: add various tests for nuking untracked files Elijah Newren via GitGitGadget
2021-09-24 6:37 ` [PATCH v2 2/6] Change unpack_trees' 'reset' flag into an enum Elijah Newren via GitGitGadget
2021-09-24 17:35 ` Junio C Hamano
2021-09-26 6:50 ` Elijah Newren
2021-09-24 6:37 ` [PATCH v2 3/6] unpack-trees: avoid nuking untracked dir in way of unmerged file Elijah Newren via GitGitGadget
2021-09-24 6:37 ` [PATCH v2 4/6] unpack-trees: avoid nuking untracked dir in way of locally deleted file Elijah Newren via GitGitGadget
2021-09-24 6:37 ` [PATCH v2 5/6] Comment important codepaths regarding nuking untracked files/dirs Elijah Newren via GitGitGadget
2021-09-24 17:50 ` Eric Sunshine
2021-09-26 6:35 ` Elijah Newren
2021-09-24 6:37 ` [PATCH v2 6/6] Documentation: call out commands that nuke untracked files/directories Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 00/11] Fix various issues around removal of " Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 01/11] t2500: add various tests for nuking untracked files Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 02/11] checkout, read-tree: fix leak of unpack_trees_options.dir Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 03/11] read-tree, merge-recursive: overwrite ignored files by default Elijah Newren via GitGitGadget
2021-12-13 17:12 ` Jack O'Connor
2021-12-13 20:10 ` Elijah Newren
2021-09-27 16:33 ` [PATCH v3 04/11] unpack-trees: introduce preserve_ignored to unpack_trees_options Elijah Newren via GitGitGadget
2021-09-29 9:22 ` Ævar Arnfjörð Bjarmason
2021-09-29 15:35 ` Elijah Newren
2021-09-29 18:30 ` Ævar Arnfjörð Bjarmason
2021-09-30 4:25 ` Elijah Newren
2021-09-30 14:04 ` Ævar Arnfjörð Bjarmason
2021-10-01 1:53 ` Elijah Newren
2021-10-01 8:15 ` Ævar Arnfjörð Bjarmason
2021-10-01 9:53 ` Ævar Arnfjörð Bjarmason
2021-10-01 18:50 ` Elijah Newren
2021-10-02 8:44 ` Ævar Arnfjörð Bjarmason
2021-10-03 22:21 ` Ævar Arnfjörð Bjarmason
2021-10-04 13:45 ` Elijah Newren
2021-10-04 13:45 ` Elijah Newren
2021-10-04 14:07 ` Ævar Arnfjörð Bjarmason
2021-10-04 14:57 ` Elijah Newren
2021-09-27 16:33 ` [PATCH v3 05/11] unpack-trees: make dir an internal-only struct Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 06/11] Remove ignored files by default when they are in the way Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 07/11] Change unpack_trees' 'reset' flag into an enum Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 08/11] unpack-trees: avoid nuking untracked dir in way of unmerged file Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 09/11] unpack-trees: avoid nuking untracked dir in way of locally deleted file Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 10/11] Comment important codepaths regarding nuking untracked files/dirs Elijah Newren via GitGitGadget
2021-09-27 16:33 ` [PATCH v3 11/11] Documentation: call out commands that nuke untracked files/directories Elijah Newren via GitGitGadget
2021-09-27 20:36 ` [PATCH v3 00/11] Fix various issues around removal of " Junio C Hamano
2021-09-27 20:41 ` Elijah Newren
2021-09-27 21:31 ` Elijah Newren
2021-09-30 14:00 ` Phillip Wood
[not found] ` <aaa8ea3b-0902-f9e6-c1a4-0ca2b1b2f57b@gmail.com>
2021-10-01 2:08 ` Elijah Newren
2021-10-04 1:11 ` [RFC PATCH v4 00/10] " Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 01/10] t2500: add various tests for nuking untracked files Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 02/10] read-tree, merge-recursive: overwrite ignored files by default Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 03/10] unpack-trees: introduce preserve_ignored to unpack_trees_options Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 04/10] unpack-trees: rename "dir" to "private_dir" Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 05/10] Remove ignored files by default when they are in the way Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 06/10] Change unpack_trees' 'reset' flag into an enum Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 07/10] unpack-trees: avoid nuking untracked dir in way of unmerged file Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 08/10] unpack-trees: avoid nuking untracked dir in way of locally deleted file Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 09/10] Comment important codepaths regarding nuking untracked files/dirs Ævar Arnfjörð Bjarmason
2021-10-04 1:11 ` [RFC PATCH v4 10/10] Documentation: call out commands that nuke untracked files/directories Ævar Arnfjörð Bjarmason
2021-10-04 14:38 ` [RFC PATCH v4 00/10] Fix various issues around removal of " Elijah Newren
2021-10-04 16:08 ` Ævar Arnfjörð Bjarmason
2021-10-05 7:40 ` Elijah Newren
2021-10-04 18:17 ` Junio C Hamano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=b634136a74b37a6f73bc3038f79031e040423883.1632006923.git.gitgitgadget@gmail.com \
--to=gitgitgadget@gmail.com \
--cc=avarab@gmail.com \
--cc=fedor.birjukov@gmail.com \
--cc=git@vger.kernel.org \
--cc=newren@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).