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Amend a test added in 96e7225b310 (hook: add 'run' subcommand,
2021-12-22) to use a for-loop instead of a copy/pasting the same test
for the four exit codes we test.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a "test_hook" wrapper similar to the existing "test_config"
wrapper added in d960c47a881 (test-lib: add helper functions for
config, 2011-08-17).
This wrapper:
- Will clean up the hook with "test_when_finished", unless --setup is
provided.
- Will error if we clobber a hook, unless --clobber is provided.
- Takes a name like "update" instead of ".git/hooks/update".
- Accepts -C <dir>, like "test_config" and "test_commit".
By using a wrapper we'll be able to easily change all the hook-related
code that assumes that the template-created ".git/hooks" directory is
created by "init", "clone" etc. once another topic follows-up and
changes the test suite to stop creating trash directories using those
templates.
In addition this will make it easy to have the hooks configured using
the "configuration-based hooks" topic, once we get around to
integrating that. I.e. we'll be able to run the tests in a mode where
we sometimes create a .git/hooks/<name>, and other times create a
script in another location, and point the relevant configuration
snippet to it.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Count string_list items in size_t, not "unsigned int".
* ab/string-list-count-in-size-t:
string-list API: change "nr" and "alloc" to "size_t"
gettext API users: don't explicitly cast ngettext()'s "n"
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Updates tests around the use of "test $(git cmd) = constant".
* ab/keep-git-exit-codes-in-tests:
rev-list simplify tests: don't ignore "git" exit code
checkout tests: don't ignore "git <cmd>" exit code
apply tests: don't ignore "git ls-files" exit code, drop sub-shell
gettext tests: don't ignore "test-tool regex" exit code
rev-list tests: don't hide abort() in "test_expect_failure"
diff tests: don't ignore "git rev-list" exit code
notes tests: don't ignore "git" exit code
rev-parse tests: don't ignore "git reflog" exit code
merge tests: use "test_must_fail" instead of ad-hoc pattern
apply tests: use "test_must_fail" instead of ad-hoc pattern
diff tests: don't ignore "git diff" exit code in "read" loop
diff tests: don't ignore "git diff" exit code
read-tree tests: check "diff-files" exit code on failure
tests: use "test_stdout_line_count", not "test $(git [...] | wc -l)"
tests: change some 'test $(git) = "x"' to test_cmp
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Teach "test-chmtime" to work on a directory and use it to avoid
having to wait for a second in a few places in tests.
* tk/t7063-chmtime-dirs-too:
t7063: mtime-mangling instead of delays in untracked cache testing
t/helper/test-chmtime: update mingw to support chmtime on directories
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Fixes to the way generation number v2 in the commit-graph files are
(not) handled.
* ds/commit-graph-gen-v2-fixes:
commit-graph: declare bankruptcy on GDAT chunks
commit-graph: fix generation number v2 overflow values
commit-graph: start parsing generation v2 (again)
commit-graph: fix ordering bug in generation numbers
t5318: extract helpers to lib-commit-graph.sh
test-read-graph: include extra post-parse info
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"git stash drop" is reimplemented as an internal call to
reflog_delete() function, instead of invoking "git reflog delete"
via run_command() API.
* jc/stash-drop:
stash: call reflog_delete() in reflog.c
reflog: libify delete reflog function and helpers
stash: add tests to ensure reflog --rewrite --updatref behavior
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"git remote rename A B", depending on the number of remote-tracking
refs involved, takes long time renaming them. The command has been
taught to show progress bar while making the user wait.
* tb/rename-remote-progress:
builtin/remote.c: show progress when renaming remote references
builtin/remote.c: parse options in 'rename'
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"git read-tree" has been made to be aware of the sparse-index
feature.
* vd/sparse-read-tree:
read-tree: make three-way merge sparse-aware
read-tree: make two-way merge sparse-aware
read-tree: narrow scope of index expansion for '--prefix'
read-tree: integrate with sparse index
read-tree: expand sparse checkout test coverage
read-tree: explicitly disallow prefixes with a leading '/'
status: fix nested sparse directory diff in sparse index
sparse-index: prevent repo root from becoming sparse
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The untracked cache newly computed weren't written back to the
on-disk index file when there is no other change to the index,
which has been corrected.
* tk/empty-untracked-cache:
untracked-cache: write index when populating empty untracked cache
t7519: populate untracked cache before test
t7519: avoid file to index mtime race for untracked cache
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Test fix-up for a topic already in master.
* ab/grep-patterntype:
log tests: fix "abort tests early" regression in ff37a60c369
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Test simplification.
* ps/fetch-atomic-fixup:
t5503: simplify setup of test which exercises failure of backfill
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Newer version of GPGSM changed its output in a backward
incompatible way to break our code that parses its output. It also
added more processes our tests need to kill when cleaning up.
Adjustments have been made to accommodate these changes.
* fs/gpgsm-update:
t/lib-gpg: kill all gpg components, not just gpg-agent
t/lib-gpg: reload gpg components after updating trustlist
gpg-interface/gpgsm: fix for v2.3
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Makefile refactoring with a bit of suffixes rule stripping to
optimize the runtime overhead.
* ab/make-optim-noop:
Makefiles: add and use wildcard "mkdir -p" template
Makefile: add "$(QUIET)" boilerplate to shared.mak
Makefile: move $(comma), $(empty) and $(space) to shared.mak
Makefile: move ".SUFFIXES" rule to shared.mak
Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES)
Makefile: disable GNU make built-in wildcard rules
Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it
scalar Makefile: use "The default target of..." pattern
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"git fetch" can make two separate fetches, but ref updates coming
from them were in two separate ref transactions under "--atomic",
which has been corrected.
* ps/fetch-atomic:
fetch: make `--atomic` flag cover pruning of refs
fetch: make `--atomic` flag cover backfilling of tags
refs: add interface to iterate over queued transactional updates
fetch: report errors when backfilling tags fails
fetch: control lifecycle of FETCH_HEAD in a single place
fetch: backfill tags before setting upstream
fetch: increase test coverage of fetches
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Updates to how command line options to "git help" are handled.
* ab/help-fixes:
help: don't print "\n" before single-section output
help: add --no-[external-commands|aliases] for use with --all
help: error if [-a|-g|-c] and [-i|-m|-w] are combined
help: correct usage & behavior of "git help --all"
help: note the option name on option incompatibility
help.c: split up list_all_cmds_help() function
help tests: test "git" and "git help [-a|-g] spacing
help.c: use puts() instead of printf{,_ln}() for consistency
help doc: add missing "]" to "[-a|--all]"
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"git cat-file" learns "--batch-command" mode, which is a more
flexible interface than the existing "--batch" or "--batch-check"
modes, to allow different kinds of inquiries made.
* jc/cat-file-batch-commands:
cat-file: add --batch-command mode
cat-file: add remove_timestamp helper
cat-file: introduce batch_mode enum to replace print_contents
cat-file: rename cmdmode to transform_mode
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In sparse-checkouts, files mis-marked as missing from the working tree
could lead to later problems. Such files were hard to discover, and
harder to correct. Automatically detecting and correcting the marking
of such files has been added to avoid these problems.
* en/present-despite-skipped:
repo_read_index: add config to expect files outside sparse patterns
Accelerate clear_skip_worktree_from_present_files() by caching
Update documentation related to sparsity and the skip-worktree bit
repo_read_index: clear SKIP_WORKTREE bit from files present in worktree
unpack-trees: fix accidental loss of user changes
t1011: add testcase demonstrating accidental loss of user modifications
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Change a fragile test pattern introduced in 65347030590 (Topo-sort
before --simplify-merges, 2008-08-03) to check the exit code of both
"git name-rev" and "git log".
This test as a whole would fail under SANITIZE=leak, but we'd pass
several "failing" tests due to hiding these exit codes before we'd
spot git dying with abort(). Now we'll instead spot all of the
failures.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change a fragile pattern introduced in 696acf45f96 (checkout:
implement "-" abbreviation, add docs and tests, 2009-01-17) to check
the exit code of both "git symbolic-ref" and "git rev-parse".
Without this change this test will become flaky e.g. under
SANITIZE=leak if some (but not all) memory leaks revealed by these
commands are fixed.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix code added in 969c877506c (git apply --directory broken for new
files, 2008-10-12) so that it doesn't invoke "git ls-files" on the
left-hand-side of a pipe, instead let's use an intermediate file.
Since we're doing that we can also drop the sub-shell that was here to
group the two.
There are a lot of these sorts of patterns in the test suite, and
there's no particular reason to fix this one other than in a preceding
commit all similar patterns except this one were fixed in
"t/t4128-apply-root.sh", so let's fix this one straggler as well.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Amend a prerequisite check added in 5c1ebcca4d1 (grep/icase: avoid
kwsset on literal non-ascii strings, 2016-06-25) to do invoke
'test-tool regex' in such a way that we'll notice if it dies under
SANITIZE=leak due to having a memory leak, as opposed to us not having
the "ICASE" support we're checking for.
Because we weren't making a distinction between the two I'd marked
these tests as passing under SANITIZE=leak in 03d85e21951 (leak tests:
mark remaining leak-free tests as such, 2021-12-17).
Doing this is tricky. Ideally "test_lazy_prereq" would materialize as
a "real" test that we could check the exit code of with the same
signal matching that "test_must_fail" does.
However lazy prerequisites aren't real tests, and are instead lazily
materialized in the guts of "test_have_prereq" when we've already
started another test.
We could detect the abort() (or similar) there and pass that exit code
down, and fail the test that caused the prerequisites to be
materialized.
But that would require extensive changes to test-lib.sh and
test-lib-functions.sh. Let's instead simply check if the exit code of
"test-tool regex" is zero, and if so set the prerequisites. If it's
non-zero let's run it again with "test_must_fail". We'll thus make a
distinction between "bad" non-zero (segv etc) and "good" (exit 1 etc.).
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change a couple of uses of "test_expect_failure" to use a
"test_expect_success" to positively assert the current behavior, and
replace the intent of "test_expect_failure" with a "TODO" comment int
the description.
As noted in [1] the "test_expect_failure" feature is overly eager to
accept any failure as OK, and thus by design hides segfaults, abort()
etc. Because of that I didn't notice in dd9cede9136 (leak tests: mark
some rev-list tests as passing with SANITIZE=leak, 2021-10-31) that
this test leaks memory under SANITIZE=leak.
I have some larger local changes to add a better
"test_expect_failure", which would work just like
"test_expect_success", but would allow us say "test_todo" here (and
"success" would emit a "not ok [...] # TODO", not "ok [...]".
So even though using "test_expect_success" here comes with its own
problems[2], let's use it as a narrow change to fix the problem at
hand here and stop conflating the current "success" with actual
SANITIZE=leak failures.
1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/
2. https://lore.kernel.org/git/xmqq4k9kj15p.fsf@gitster.g/
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change a fragile pattern introduced in 2b459b483cb (diff: make sure
work tree side is shown as 0{40} when different, 2008-03-02) to check
the exit code of "git rev-list", while we're at it let's get rid of
the needless sub-shell for invoking it in favor of the "-C" option.
Because of this I'd marked these tests as passing under SANITIZE=leak
in 16d4bd4f14e (leak tests: mark some diff tests as passing with
SANITIZE=leak, 2021-10-31), let's remove the
"TEST_PASSES_SANITIZE_LEAK=true" annotation as they no longer do.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change a fragile test pattern that's been with us ever since these
tests were introduced in [1], [2] and [3] to properly return the exit
code of the failing command on failure.
Because of this I'd marked this test as passing under SANITIZE=leak in
[4] and [5]. We need to remove those annotations as these tests will
no longer pass.
1. 9081a421a6d (checkout: fix "branch info" memory leaks, 2021-11-16)
2. 0057c0917d3 (Add selftests verifying that we can parse notes trees
with various fanouts, 2009-10-09)
3. 048cdd4665e (t3305: Verify that adding many notes with git-notes
triggers increased fanout, 2010-02-13)
4. ca089724952 (leak tests: mark some notes tests as passing with
SANITIZE=leak, 2021-10-31)
5. 9081a421a6d (checkout: fix "branch info" memory leaks, 2021-11-16)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Amend a test added in 9c46c054ae4 (rev-parse: tests git rev-parse
--verify master@{n}, for various n, 2010-08-24) so that we'll stop
ignoring the exit code of "git reflog" by having it on the
left-hand-side of a pipe.
Because of this I'd marked this test as passing under SANITIZE=leak in
f442c94638d (leak tests: mark some rev-parse tests as passing with
SANITIZE=leak, 2021-10-31). As all of it except this specific test
will now pass, let's skip it under the !SANITIZE_LEAK prerequisite.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As in the preceding commit change a similar fragile test pattern
introduced in b798671fa93 (merge-recursive: do not rudely die on
binary merge, 2007-08-14) to use a "test_must_fail" instead.
Before this we wouldn't distinguish normal "git merge" failures from
segfaults or abort(). Unlike the preceding commit we didn't end up
hiding any SANITIZE=leak failures in this case, but let's
correspondingly change these anyway.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change a fragile test pattern introduced in 6b763c424e4 (git-apply: do
not read past the end of buffer, 2007-09-05). Before this we wouldn't
distinguish normal "git apply" failures from segfaults or abort().
I'd previously marked this test as passing under SANITIZE=leak in
f54f48fc074 (leak tests: mark some apply tests as passing with
SANITIZE=leak, 2021-10-31). Let's remove that annotation as this test
will no longer pass.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix a test pattern that originated in f1af60bdba4 (Support 'diff=pgm'
attribute, 2007-04-22) so that we'll stop using "git diff" on the
left-hand-side of a pipe, and thus ignoring its exit code.
Rather than use intermediate files let's rewrite these tests to a much
simpler but more exhaustive "test_tmp" where we'll ignore certain
fields in the output.
Note that this is not a faithful conversion of the previous
"read/test" in some cases, as we were ignoring more fields there than
we strictly needed to. Now we'll "test_cmp" everything we can, and
only ignore the likes of paths to $TEMPDIR etc.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix a test pattern that originated in f1af60bdba4 (Support 'diff=pgm'
attribute, 2007-04-22) so that we'll stop using "git diff" on the
left-hand-side of a pipe, and thus ignoring its exit code.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix an issue with the exit code of "diff-files" being ignored, which
has been ignored ever since these tests were originally added in
c859600954d ([PATCH] read-tree: save more user hassles during
fast-forward., 2005-06-07).
Since the exit code was ignored we'd hide errors here under
SANITIZE=leak, which resulted in me mistakenly marking these tests as
passing under SANITIZE=leak in e5a917fcf42 (unpack-trees: don't leak
memory in verify_clean_subdirectory(), 2021-10-07) and
4ea08416b8e (leak tests: mark a read-tree test as passing
SANITIZE=leak, 2021-10-31).
As it would be non-trivial to fix these tests (the leak is in
revision.c) let's un-mark them as passing under SANITIZE=leak in
addition to fixing the issue of ignoring the exit code.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use the test_stdout_line_count helper added in
cdff1bb5a3d (test-lib-functions: introduce test_stdout_line_count,
2021-07-04) so that we'll spot if git itself dies, segfaults etc in
these expressions.
Because we didn't distinguish these failure conditions before I'd
mistakenly marked these tests as passing under SANITIZE=leak in
dd9cede9136 (leak tests: mark some rev-list tests as passing with
SANITIZE=leak, 2021-10-31).
While we're at it let's re-indent these lines to match our usual
style, as we're having to change all of them anyway.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change some of the patterns in the test suite where we were hiding the
exit code from "git" by invoking it in a sub-shell within a "test"
expression to use temporary files and test_cmp instead.
These are not all the occurrences of this anti-pattern, but these in
particular hid issues where LSAN was dying, and I'd thus marked these
tests as passing under the linux-leaks CI job in past commits with
"TEST_PASSES_SANITIZE_LEAK=true". Let's deal with that by either
removing that marking, or skipping specific tests under
!SANITIZE_LEAK.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change the "nr" and "alloc" members of "struct string_list" to use
"size_t" instead of "nr". On some platforms the size of an "unsigned
int" will be smaller than a "size_t", e.g. a 32 bit unsigned v.s. 64
bit unsigned. As "struct string_list" is a generic API we use in a lot
of places this might cause overflows.
As one example: code in "refs.c" keeps track of the number of refs
with a "size_t", and auxiliary code in builtin/remote.c in
get_ref_states() appends those to a "struct string_list".
While we're at it split the "nr" and "alloc" in string-list.h across
two lines, which is the case for most such struct member
declarations (e.g. in "strbuf.h" and "strvec.h").
Changing e.g. "int i" to "size_t i" in run_and_feed_hook() isn't
strictly necessary, and there are a lot more cases where we'll use a
local "int", "unsigned int" etc. variable derived from the "nr" in the
"struct string_list". But in that case as well as
add_wrapped_shortlog_msg() in builtin/shortlog.c we need to adjust the
printf format referring to "nr" anyway, so let's also change the other
variables referring to it.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Many output modes of "ls-files" do not work with its
"--recurse-submodules" option, but the "-s" mode has been taught to
work with it.
* jt/ls-files-stage-recurse:
ls-files: support --recurse-submodules --stage
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"git checkout -b branch/with/multi/level/name && git stash" only
recorded the last level component of the branch name, which has
been corrected.
* gc/stash-on-branch-with-multi-level-name:
stash: strip "refs/heads/" with skip_prefix
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The error message given by "git switch HEAD~4" has been clarified
to suggest the "--detach" option that is required.
* ah/advice-switch-requires-detach-to-detach:
switch: mention the --detach option when dying due to lack of a branch
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When "index-pack" dies due to incoming data exceeding the maximum
allowed input size, include the value of the limit in the error
message.
* mc/index-pack-report-max-size:
index-pack: clarify the breached limit
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Usage-string normalization.
* ac/usage-string-fixups:
amend remaining usage strings according to style guide
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Random test-framework clean-up.
* ab/test-leak-diag:
test-lib: add "fast_unwind_on_malloc=0" to LSAN_OPTIONS
test-lib: make $GIT_BUILD_DIR an absolute path
test-lib: correct and assert TEST_DIRECTORY overriding
test-lib: add GIT_SAN_OPTIONS, inherit [AL]SAN_OPTIONS
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Test modernization.
* ab/hook-tests:
hook tests: use a modern style for "pre-push" tests
hook tests: test for exact "pre-push" hook input
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A not-so-common mistake is to write a script to feed "git bisect
run" without making it executable, in which case all tests will
exit with 126 or 127 error codes, even on revisions that are marked
as good. Try to recognize this situation and stop iteration early.
* rs/bisect-executable-not-found:
bisect--helper: double-check run command on exit code 126 and 127
bisect: document run behavior with exit codes 126 and 127
bisect--helper: release strbuf and strvec on run error
bisect--helper: report actual bisect_state() argument on error
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Further polishing of "git sparse-checkout".
* en/sparse-checkout-fixes:
sparse-checkout: reject arguments in cone-mode that look like patterns
sparse-checkout: error or warn when given individual files
sparse-checkout: pay attention to prefix for {set, add}
sparse-checkout: correctly set non-cone mode when expected
sparse-checkout: correct reapply's handling of options
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Test modernization.
* cg/t3903-modernize:
tests: make the code more readable
tests: allow testing if a path is truly a file or a directory
t/t3903-stash.sh: replace test [-d|-f] with test_path_is_*
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The gpg-agent is one of several processes that newer releases of GnuPG
start automatically. Issue a kill to each of them to ensure they do not
affect separate tests. (Yes, the separate GNUPGHOME should do that
already. If we find that is case, we could drop the --kill entirely.)
In terms of compatibility, the 'all' keyword was added to the --kill &
--reload options in GnuPG 2.1.18. Debian and RHEL are often used as
indicators of how a change might affect older systems we often try to
support.
- Debian Strech (old old stable), which has limited security support
until June 2022, has GnuPG 2.1.18 (or 2.2.x in backports).
- CentOS/RHEL 7, which is supported until June 2024, has GnuPG
2.0.22, which lacks the --kill option, so the change won't have
any impact.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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With gpgsm from gnupg-2.3, the changes to the trustlist.txt do not
appear to be picked up without refreshing the gpg-agent. Use the 'all'
keyword to reload all of the gpg components. The scdaemon is started as
a child of gpg-agent, for example.
We used to have a --kill at this spot, but I removed it in 2e285e7803
(t/lib-gpg: drop redundant killing of gpg-agent, 2019-02-07). It seems
like it might be necessary (again) for 2.3.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Checking if signing was successful will now accept '[GNUPG]:
SIG_CREATED' on the beginning of the first or any subsequent line. Not
just explictly the second one anymore.
Gpgsm v2.3 changed its output when listing keys from `fingerprint` to
`sha1/2 fpr`. This leads to the gpgsm tests silently not being executed
because of a failed prerequisite.
Switch to gpg's `--with-colons` output format when evaluating test
prerequisites to make parsing more robust. This also allows us to
combine the existing grep/cut/tr/echo pipe for writing the trustlist.txt
into a single awk expression.
Adjust error message checking in test for v2.3 specific output changes.
Helped-By: Junio C Hamano <gitster@pobox.com>
Helped-By: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix a regression in ff37a60c369 (log tests: check if grep_config() is
called by "log"-like cmds, 2022-02-16), a "test_done" command used
during development made it into a submitted patch causing tests 41-136
in t/t4202-log.sh to be skipped.
Reported-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When renaming a remote, Git needs to rename all remote tracking
references to the remote's new name (e.g., renaming
"refs/remotes/old/foo" to "refs/remotes/new/foo" when renaming a remote
from "old" to "new").
This can be somewhat slow when there are many references to rename,
since each rename is done in a separate call to rename_ref() as opposed
to grouping all renames together into the same transaction. It would be
nice to execute all renames as a single transaction, but there is a
snag: the reference transaction backend doesn't support renames during a
transaction (only individually, via rename_ref()).
The reasons there are described in more detail in [1], but the main
problem is that in order to preserve the existing reflog, it must be
moved while holding both locks (i.e., on "oldname" and "newname"), and
the ref transaction code doesn't support inserting arbitrary actions
into the middle of a transaction like that.
As an aside, adding support for this to the ref transaction code is
less straightforward than inserting both a ref_update() and ref_delete()
call into the same transaction. rename_ref()'s special handling to
detect D/F conflicts would need to be rewritten for the transaction code
if we wanted to proactively catch D/F conflicts when renaming a
reference during a transaction. The reftable backend could support this
much more readily because of its lack of D/F conflicts.
Instead of a more complex modification to the ref transaction code,
display a progress meter when running verbosely in order to convince the
user that Git is doing work while renaming a remote.
This is mostly done as-expected, with the minor caveat that we
intentionally count symrefs renames twice, since renaming a symref takes
place over two separate calls (one to delete the old one, and another to
create the new one).
[1]: https://lore.kernel.org/git/572367B4.4050207@alum.mit.edu/
Suggested-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the testcase to exercise backfilling of tags for fetches we evoke a
failure of the backfilling mechanism by creating a reference that later
on causes a D/F conflict. Because the assumption was that git-fetch(1)
would notice the D/F conflict early on this conflicting reference was
created via the reference-transaction hook just when we were about to
write the backfilled tag. As it turns out though this is not the case,
and the fetch fails in the same way when we create the conflicting ref
up front.
Simplify the test setup creating the reference up front, which allows us
to get rid of the hook script.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Ævar Arnfjörð Bjarmason
Junio C Hamano
Todd Zullinger
Fabian Stelzer
Taylor Blau
Patrick Steinhardt