[PATCH v2 0/4] t: replace incorrect test_must_fail usage (part 5)

[Denton Liu <liu.denton@gmail.com>]

Hi all,

This is mostly a resend of what's currently queued in
"dl/test-must-fail-fixes-5" except with a tiny bit of cleanup on the tip
patch. I'd appreciate a review on this series so that we can finally get
rid of that "Needs review" on the What's Cooking messages ;)


The overall scope of these patches is to replace inappropriate uses of
test_must_fail. IOW, we should only allow test_must_fail to run on `git`
and `test-tool`. Ultimately, we will conclude by making test_must_fail
error out on non-git commands. An advance view of the final series can
be found here[1].

This is the fifth part. It focuses on lib-submodule-update.sh and tests
that make use of it.

The first part can be found here[2]. The second part can be found
here[3]. The third part can be found here[4]. The fourth part can be
found here[5].

Changes since v1.2:

* In "lib-submodule-update: pass OVERWRITING_FAIL", use if-then return
  to reduce the amount of code churn

[1]: (may be rebased at any time) https://github.com/Denton-L/git/tree/ready/cleanup-test-must-fail2
[2]: https://lore.kernel.org/git/cover.1576583819.git.liu.denton@gmail.com/
[3]: https://lore.kernel.org/git/cover.1577454401.git.liu.denton@gmail.com/
[4]: https://lore.kernel.org/git/cover.1585209554.git.liu.denton@gmail.com/
[5]: https://lore.kernel.org/git/cover.1587372771.git.liu.denton@gmail.com/

Denton Liu (4):
  lib-submodule-update: add space after function name
  lib-submodule-update: consolidate --recurse-submodules
  lib-submodule-update: prepend "git" to $command
  lib-submodule-update: pass OVERWRITING_FAIL

 t/lib-submodule-update.sh        | 55 ++++++++++++++++++++++----------
 t/t1013-read-tree-submodule.sh   |  4 +--
 t/t2013-checkout-submodule.sh    |  4 +--
 t/t3426-rebase-submodule.sh      |  8 ++---
 t/t3512-cherry-pick-submodule.sh |  2 +-
 t/t3513-revert-submodule.sh      |  7 +++-
 t/t3906-stash-submodule.sh       |  8 +++--
 t/t4137-apply-submodule.sh       | 10 +++---
 t/t4255-am-submodule.sh          | 10 +++---
 t/t5572-pull-submodule.sh        | 16 +++++-----
 t/t6041-bisect-submodule.sh      |  8 +++--
 t/t7112-reset-submodule.sh       |  6 ++--
 t/t7613-merge-submodule.sh       |  8 ++---
 13 files changed, 92 insertions(+), 54 deletions(-)

Range-diff against v1:
1:  f148526dae = 1:  ba2f642e0f lib-submodule-update: add space after function name
2:  b7d7d0d761 = 2:  16d0a3eb9a lib-submodule-update: consolidate --recurse-submodules
3:  4922e75f2a = 3:  578bab6f1a lib-submodule-update: prepend "git" to $command
4:  a0a8fbd881 ! 4:  48598e3f98 lib-submodule-update: pass OVERWRITING_FAIL
    @@ Commit message
         with a file buffer so that the return code of the first command is not
         lost.
     
    -    This patch can be better viewed with `--ignore-all-space`.
    -
      ## t/lib-submodule-update.sh ##
     @@ t/lib-submodule-update.sh: test_submodule_content () {
      # a removed submodule.
    @@ t/t3513-revert-submodule.sh: git_revert () {
      	git status -su >expect &&
      	ls -1pR * >>expect &&
      	tar cf "$TRASH_DIRECTORY/tmp.tar" * &&
    --	git checkout "$1" &&
    --	git revert HEAD &&
    --	rm -rf * &&
    --	tar xf "$TRASH_DIRECTORY/tmp.tar" &&
    --	git status -su >actual &&
    --	ls -1pR * >>actual &&
    --	test_cmp expect actual &&
    --	git revert HEAD
     +	$OVERWRITING_FAIL git checkout "$1" &&
    -+	if test -z "$OVERWRITING_FAIL"
    ++	if test -n "$OVERWRITING_FAIL"
     +	then
    -+		git checkout "$1" &&
    -+		git revert HEAD &&
    -+		rm -rf * &&
    -+		tar xf "$TRASH_DIRECTORY/tmp.tar" &&
    -+		git status -su >actual &&
    -+		ls -1pR * >>actual &&
    -+		test_cmp expect actual &&
    -+		git revert HEAD
    -+	fi
    - }
    - 
    - KNOWN_FAILURE_NOFF_MERGE_DOESNT_CREATE_EMPTY_SUBMODULE_DIR=1
    ++		return
    ++	fi &&
    + 	git checkout "$1" &&
    + 	git revert HEAD &&
    + 	rm -rf * &&
     
      ## t/t3906-stash-submodule.sh ##
     @@ t/t3906-stash-submodule.sh: test_description='stash can handle submodules'
    @@ t/t3906-stash-submodule.sh: test_description='stash can handle submodules'
      	git status -su >expect &&
      	ls -1pR * >>expect &&
     -	git read-tree -u -m "$1" &&
    --	git stash &&
    --	git status -su >actual &&
    --	ls -1pR * >>actual &&
    --	test_cmp expect actual &&
    --	git stash apply
     +	$OVERWRITING_FAIL git read-tree -u -m "$1" &&
    -+	if test -z "$OVERWRITING_FAIL"
    ++	if test -n "$OVERWRITING_FAIL"
     +	then
    -+		git stash &&
    -+		git status -su >actual &&
    -+		ls -1pR * >>actual &&
    -+		test_cmp expect actual &&
    -+		git stash apply
    -+	fi
    - }
    - 
    - KNOWN_FAILURE_STASH_DOES_IGNORE_SUBMODULE_CHANGES=1
    ++		return
    ++	fi &&
    + 	git stash &&
    + 	git status -su >actual &&
    + 	ls -1pR * >>actual &&
     
      ## t/t4137-apply-submodule.sh ##
     @@ t/t4137-apply-submodule.sh: test_description='git apply handling submodules'
    @@ t/t6041-bisect-submodule.sh: git_bisect () {
      	tar cf "$TRASH_DIRECTORY/tmp.tar" * &&
      	GOOD=$(git rev-parse --verify HEAD) &&
     -	git checkout "$1" &&
    --	echo "foo" >bar &&
    --	git add bar &&
    --	git commit -m "bisect bad" &&
    --	BAD=$(git rev-parse --verify HEAD) &&
    --	git reset --hard HEAD^^ &&
    --	git submodule update &&
    --	git bisect start &&
    --	git bisect good $GOOD &&
    --	rm -rf * &&
    --	tar xf "$TRASH_DIRECTORY/tmp.tar" &&
    --	git status -su >actual &&
    --	ls -1pR * >>actual &&
    --	test_cmp expect actual &&
    --	git bisect bad $BAD
     +	$OVERWRITING_FAIL git checkout "$1" &&
    -+	if test -z "$OVERWRITING_FAIL"
    ++	if test -n "$OVERWRITING_FAIL"
     +	then
    -+		echo "foo" >bar &&
    -+		git add bar &&
    -+		git commit -m "bisect bad" &&
    -+		BAD=$(git rev-parse --verify HEAD) &&
    -+		git reset --hard HEAD^^ &&
    -+		git submodule update &&
    -+		git bisect start &&
    -+		git bisect good $GOOD &&
    -+		rm -rf * &&
    -+		tar xf "$TRASH_DIRECTORY/tmp.tar" &&
    -+		git status -su >actual &&
    -+		ls -1pR * >>actual &&
    -+		test_cmp expect actual &&
    -+		git bisect bad $BAD
    -+	fi
    - }
    - 
    - test_submodule_switch_func "git_bisect"
    ++		return
    ++	fi &&
    + 	echo "foo" >bar &&
    + 	git add bar &&
    + 	git commit -m "bisect bad" &&
-- 
2.27.0.rc0.114.g141fe7d276