Commit Graph

128 Commits

Author SHA1 Message Date
Junio C Hamano
aa5a7e02ad Merge branch 'ma/test-cleanup'
Code cleanup.

* ma/test-cleanup:
  t: drop debug `cat` calls
  t9810: drop debug `cat` call
  t4117: check for files using `test_path_is_file`
2020-03-02 15:07:20 -08:00
Martin Ågren
3c29e21eb0 t: drop debug cat calls
We `cat` files, but don't inspect or grab the contents in any way.
Unlike in an earlier commit, there is no reason to suspect that these
files could be missing, so `cat`-ing them is just wasted effort.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-24 11:18:25 -08:00
Junio C Hamano
f52ab33616 Merge branch 'bc/hash-independent-tests-part-7'
Preparation of test scripts for the day when the object names will
use SHA-256 continues.

* bc/hash-independent-tests-part-7:
  t5604: make hash independent
  t5601: switch into repository to hash object
  t5562: use $ZERO_OID
  t5540: make hash size independent
  t5537: make hash size independent
  t5530: compute results based on object length
  t5512: abstract away SHA-1-specific constants
  t5510: make hash size independent
  t5504: make hash algorithm independent
  t5324: make hash size independent
  t5319: make test work with SHA-256
  t5319: change invalid offset for SHA-256 compatibility
  t5318: update for SHA-256
  t4300: abstract away SHA-1-specific constants
  t4204: make hash size independent
  t4202: abstract away SHA-1-specific constants
  t4200: make hash size independent
  t4134: compute appropriate length constant
  t4066: compute index line in diffs
  t4054: make hash-size independent
2020-02-05 14:34:59 -08:00
Derrick Stolee
b40a50264a fetch: document and test --refmap=""
To prevent long blocking time during a 'git fetch' call, a user
may want to set up a schedule for background 'git fetch' processes.
However, these runs will update the refs/remotes branches due to
the default refspec set in the config when Git adds a remote.
Hence the user will not notice when remote refs are updated during
their foreground fetches. In fact, they may _want_ those refs to
stay put so they can work with the refs from their last foreground
fetch call.

This can be accomplished by overriding the configured refspec using
'--refmap=' along with a custom refspec:

  git fetch --refmap='' <remote> +refs/heads/*:refs/hidden/<remote>/*

to populate a custom ref space and download a pack of the new
reachable objects. This kind of call allows a few things to happen:

1. We download a new pack if refs have updated.
2. Since the refs/hidden branches exist, GC will not remove the
   newly-downloaded data.
3. With fetch.writeCommitGraph enabled, the refs/hidden refs are
   used to update the commit-graph file.

To avoid the refs/hidden directory from filling without bound, the
--prune option can be included. When providing a refspec like this,
the --prune option does not delete remote refs and instead only
deletes refs in the target refspace.

Update the documentation to clarify how '--refmap=""' works and
create tests to guarantee this behavior remains in the future.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-21 10:24:48 -08:00
brian m. carlson
ba1be1ab45 t5510: make hash size independent
Use $OID_REGEX instead of hard-coding 40-based regular expressions.
Change invocations of cut with a hard-coded constant to split using a
delimiter instead.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 14:06:19 -08:00
Junio C Hamano
dac1d83c91 Merge branch 'ds/commit-graph-on-fetch'
Regression fix.

* ds/commit-graph-on-fetch:
  commit-graph: fix writing first commit-graph during fetch
  t5510-fetch.sh: demonstrate fetch.writeCommitGraph bug
2019-11-04 13:33:06 +09:00
Derrick Stolee
cb99a34e23 commit-graph: fix writing first commit-graph during fetch
The previous commit includes a failing test for an issue around
fetch.writeCommitGraph and fetching in a repo with a submodule. Here, we
fix that bug and set the test to "test_expect_success".

The problem arises with this set of commands when the remote repo at
<url> has a submodule. Note that --recurse-submodules is not needed to
demonstrate the bug.

	$ git clone <url> test
	$ cd test
	$ git -c fetch.writeCommitGraph=true fetch origin
	Computing commit graph generation numbers: 100% (12/12), done.
	BUG: commit-graph.c:886: missing parent <hash1> for commit <hash2>
	Aborted (core dumped)

As an initial fix, I converted the code in builtin/fetch.c that calls
write_commit_graph_reachable() to instead launch a "git commit-graph
write --reachable --split" process. That code worked, but is not how we
want the feature to work long-term.

That test did demonstrate that the issue must be something to do with
internal state of the 'git fetch' process.

The write_commit_graph() method in commit-graph.c ensures the commits we
plan to write are "closed under reachability" using close_reachable().
This method walks from the input commits, and uses the UNINTERESTING
flag to mark which commits have already been visited. This allows the
walk to take O(N) time, where N is the number of commits, instead of
O(P) time, where P is the number of paths. (The number of paths can be
exponential in the number of commits.)

However, the UNINTERESTING flag is used in lots of places in the
codebase. This flag usually means some barrier to stop a commit walk,
such as in revision-walking to compare histories. It is not often
cleared after the walk completes because the starting points of those
walks do not have the UNINTERESTING flag, and clear_commit_marks() would
stop immediately.

This is happening during a 'git fetch' call with a remote. The fetch
negotiation is comparing the remote refs with the local refs and marking
some commits as UNINTERESTING.

I tested running clear_commit_marks_many() to clear the UNINTERESTING
flag inside close_reachable(), but the tips did not have the flag, so
that did nothing.

It turns out that the calculate_changed_submodule_paths() method is at
fault. Thanks, Peff, for pointing out this detail! More specifically,
for each submodule, the collect_changed_submodules() runs a revision
walk to essentially do file-history on the list of submodules. That
revision walk marks commits UNININTERESTING if they are simplified away
by not changing the submodule.

Instead, I finally arrived on the conclusion that I should use a flag
that is not used in any other part of the code. In commit-reach.c, a
number of flags were defined for commit walk algorithms. The REACHABLE
flag seemed like it made the most sense, and it seems it was not
actually used in the file. The REACHABLE flag was used in early versions
of commit-reach.c, but was removed by 4fbcca4 (commit-reach: make
can_all_from_reach... linear, 2018-07-20).

Add the REACHABLE flag to commit-graph.c and use it instead of
UNINTERESTING in close_reachable(). This fixes the bug in manual
testing.

Reported-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Helped-by: Jeff King <peff@peff.net>
Helped-by: Szeder Gábor <szeder.dev@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-25 11:19:16 +09:00
Derrick Stolee
e88aab917e t5510-fetch.sh: demonstrate fetch.writeCommitGraph bug
While dogfooding, Johannes found a bug in the fetch.writeCommitGraph
config behavior. His example initially happened during a clone with
--recurse-submodules, we found that this happens with the first fetch
after cloning a repository that contains a submodule:

	$ git clone <url> test
	$ cd test
	$ git -c fetch.writeCommitGraph=true fetch origin
	Computing commit graph generation numbers: 100% (12/12), done.
	BUG: commit-graph.c:886: missing parent <hash1> for commit <hash2>
	Aborted (core dumped)

In the repo I had cloned, there were really 60 commits to scan, but
only 12 were in the list to write when calling
compute_generation_numbers(). A commit in the list expects to see a
parent, but that parent is not in the list.

A follow-up will fix the bug, but first we create a test that
demonstrates the problem. This test must be careful about an existing
commit-graph file, since GIT_TEST_COMMIT_GRAPH=1 will cause the repo we
are cloning to already have one. This then prevents the incremtnal
commit-graph write during the first 'git fetch'.

Helped-by: Jeff King <peff@peff.net>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Helped-by: Szeder Gábor <szeder.dev@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-25 11:19:14 +09:00
Junio C Hamano
5a5350940b Merge branch 'ds/commit-graph-on-fetch'
A configuration variable tells "git fetch" to write the commit
graph after finishing.

* ds/commit-graph-on-fetch:
  fetch: add fetch.writeCommitGraph config setting
2019-09-30 13:19:32 +09:00
Derrick Stolee
50f26bd035 fetch: add fetch.writeCommitGraph config setting
The commit-graph feature is now on by default, and is being
written during 'git gc' by default. Typically, Git only writes
a commit-graph when a 'git gc --auto' command passes the gc.auto
setting to actualy do work. This means that a commit-graph will
typically fall behind the commits that are being used every day.

To stay updated with the latest commits, add a step to 'git
fetch' to write a commit-graph after fetching new objects. The
fetch.writeCommitGraph config setting enables writing a split
commit-graph, so on average the cost of writing this file is
very small. Occasionally, the commit-graph chain will collapse
to a single level, and this could be slow for very large repos.

For additional use, adjust the default to be true when
feature.experimental is enabled.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-03 12:06:14 -07:00
SZEDER Gábor
12b1826609 t5510-fetch: run non-httpd-specific test before sourcing 'lib-httpd.sh'
't5510-fetch.sh' sources 'lib-httpd.sh' near the end to run a
httpd-specific test, but 'lib-httpd.sh' skips all the rest of the test
script if the dependencies for running httpd tests are not fulfilled.
Alas, recently cdbd70c437 (fetch: add --[no-]show-forced-updates
argument, 2019-06-18) appended a non-httpd-specific test at the end,
and this test is then skipped as well when httpd tests can't be run.

Move this new test earlier in the test script, before 'lib-httpd.sh'
is sourced, so it will be run even when httpd tests aren't.

Also add a comment at the end of this test script to warn against
adding non-httpd-specific tests at the end, in the hope that it will
help prevent similar issues in the future.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-01 11:39:00 -07:00
SZEDER Gábor
814291cf3f t5510-fetch: fix negated 'test_i18ngrep' invocation
The test '--no-show-forced-updates' in 't5510-fetch.sh' added in
cdbd70c437 (fetch: add --[no-]show-forced-updates argument,
2019-06-18) runs '! test_i18ngrep ...'.  This is wrong, because when
running the test with GIT_TEST_GETTEXT_POISON=true, then
'test_i18ngrep' is basically a noop and always returns with success,
the leading ! turns that into a failure, which then fails the test.

Use 'test_i18ngrep ! ...' instead.

This went unnoticed by our GETTEXT_POISON CI builds, because those
builds don't run this test case: in those builds we don't install
Apache, and this test comes after 't5510' sources 'lib-httpd.sh',
which, consequently, skips all the remaining tests, including this
one.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-31 10:07:48 -07:00
Derrick Stolee
cdbd70c437 fetch: add --[no-]show-forced-updates argument
After updating a set of remove refs during a 'git fetch', we walk the
commits in the new ref value and not in the old ref value to discover
if the update was a forced update. This results in two things happening
during the command:

 1. The line including the ref update has an additional "(forced-update)"
    marker at the end.

 2. The ref log for that remote branch includes a bit saying that update
    is a forced update.

For many situations, this forced-update message happens infrequently, or
is a small bit of information among many ref updates. Many users ignore
these messages, but the calculation required here slows down their fetches
significantly. Keep in mind that they do not have the opportunity to
calculate a commit-graph file containing the newly-fetched commits, so
these comparisons can be very slow.

Add a '--[no-]show-forced-updates' option that allows a user to skip this
calculation. The only permanent result is dropping the forced-update bit
in the reflog.

Include a new fetch.showForcedUpdates config setting that allows this
behavior without including the argument in every command. The config
setting is overridden by the command-line arguments.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-21 09:38:29 -07:00
SZEDER Gábor
8c3b9f7faa tests: use 'test_atexit' to stop httpd
Use 'test_atexit' to run cleanup commands to stop httpd at the end of
the test script or upon interrupt or failure, as it is shorter,
simpler, and more robust than registering such cleanup commands in the
trap on EXIT in the test scripts.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-03-14 12:34:39 +09:00
Junio C Hamano
42a6274b62 Merge branch 'ab/fetch-tags-noclobber'
Test and doc clean-ups.

* ab/fetch-tags-noclobber:
  pull doc: fix a long-standing grammar error
  fetch tests: correct a comment "remove it" -> "remove them"
  push tests: assert re-pushing annotated tags
  push tests: add more testing for forced tag pushing
  push tests: fix logic error in "push" test assertion
  push tests: remove redundant 'git push' invocation
  fetch tests: change "Tag" test tag to "testTag"
2018-08-20 11:33:52 -07:00
Junio C Hamano
72c11b7e62 Merge branch 'jt/refspec-dwim-precedence-fix'
"git fetch $there refs/heads/s" ought to fetch the tip of the
branch 's', but when "refs/heads/refs/heads/s", i.e. a branch whose
name is "refs/heads/s" exists at the same time, fetched that one
instead by mistake.  This has been corrected to honor the usual
disambiguation rules for abbreviated refnames.

* jt/refspec-dwim-precedence-fix:
  remote: make refspec follow the same disambiguation rule as local refs
2018-08-17 13:09:55 -07:00
Ævar Arnfjörð Bjarmason
d365112115 fetch tests: correct a comment "remove it" -> "remove them"
Correct a comment referring to the removal of just the branch to also
refer to the tag. This should have been changed in my
ca3065e7e7 ("fetch tests: add a tag to be deleted to the pruning
tests", 2018-02-09) when the tag deletion was added, but I missed it
at the time.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13 13:25:51 -07:00
Junio C Hamano
562413eb29 Merge branch 'kg/gc-auto-windows-workaround'
"git gc --auto" opens file descriptors for the packfiles before
spawning "git repack/prune", which would upset Windows that does
not want a process to work on a file that is open by another
process.  The issue has been worked around.

* kg/gc-auto-windows-workaround:
  gc --auto: release pack files before auto packing
2018-08-02 15:30:43 -07:00
Junio C Hamano
60650a48c0 remote: make refspec follow the same disambiguation rule as local refs
When matching a non-wildcard LHS of a refspec against a list of
refs, find_ref_by_name_abbrev() returns the first ref that matches
using any DWIM rules used by refname_match() in refs.c, even if a
better match occurs later in the list of refs.

This causes unexpected behavior when (for example) fetching using
the refspec "refs/heads/s:<something>" from a remote with both
"refs/heads/refs/heads/s" and "refs/heads/s"; even if the former was
inadvertently created, one would still expect the latter to be
fetched.  Similarly, when both a tag T and a branch T exist,
fetching T should favor the tag, just like how local refname
disambiguation rule works.  But because the code walks over
ls-remote output from the remote, which happens to be sorted in
alphabetical order and has refs/heads/T before refs/tags/T, a
request to fetch T is (mis)interpreted as fetching refs/heads/T.

Update refname_match(), all of whose current callers care only if it
returns non-zero (i.e. matches) to see if an abbreviated name can
mean the full name being tested, so that it returns a positive
integer whose magnitude can be used to tell the precedence, and fix
the find_ref_by_name_abbrev() function not to stop at the first
match but find the match with the highest precedence.

This is based on an earlier work, which special cased only the exact
matches, by Jonathan Tan.

Helped-by: Jonathan Tan <jonathantanmy@google.com>
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-02 12:16:52 -07:00
Kim Gybels
12e73a3ce4 gc --auto: release pack files before auto packing
Teach gc --auto to release pack files before auto packing the repository
to prevent failures when removing them.

Also teach the test 'fetching with auto-gc does not lock up' to complain
when it is no longer triggering an auto packing of the repository.

Fixes https://github.com/git-for-windows/git/issues/500

Signed-off-by: Kim Gybels <kgybels@infogroep.be>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-09 14:16:10 -07:00
Jonathan Tan
3390e42adb fetch-pack: support negotiation tip whitelist
During negotiation, fetch-pack eventually reports as "have" lines all
commits reachable from all refs. Allow the user to restrict the commits
sent in this way by providing a whitelist of tips; only the tips
themselves and their ancestors will be sent.

Both globs and single objects are supported.

This feature is only supported for protocols that support connect or
stateless-connect (such as HTTP with protocol v2).

This will speed up negotiation when the repository has multiple
relatively independent branches (for example, when a repository
interacts with multiple repositories, such as with linux-next [1] and
torvalds/linux [2]), and the user knows which local branch is likely to
have commits in common with the upstream branch they are fetching.

[1] https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next/
[2] https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux/

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-03 15:00:41 -07:00
Junio C Hamano
d6e5484208 Merge branch 'cc/tests-without-assuming-ref-files-backend'
Quite a many tests assumed that newly created refs are made as
loose refs using the files backend, which have been updated to use
proper plumbing like rev-parse and update-ref, to avoid breakage
once we start using different ref backends.

* cc/tests-without-assuming-ref-files-backend:
  t990X: use '.git/objects' as 'deep inside .git' path
  t: make many tests depend less on the refs being files
2018-06-01 15:06:41 +09:00
David Turner
cbc5cf7ce5 t: make many tests depend less on the refs being files
Many tests are very focused on the file system representation of the
loose and packed refs code. As there are plans to implement other
ref storage systems, let's migrate these tests to a form that test
the intent of the refs storage system instead of it internals.

This will make clear to readers that these tests do not depend on
which ref backend is used.

The internals of the loose refs backend are still tested in
t1400-update-ref.sh, whereas the tests changed in this patch focus
on testing other aspects.

This patch just takes care of many low hanging fruits. It does not
try to completely solves the issue.

Helped-by: Stefan Beller <sbeller@google.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-23 14:59:38 +09:00
Junio C Hamano
c40c1a0df2 Merge branch 'pk/test-avoid-pipe-hiding-exit-status'
Test cleanup.

* pk/test-avoid-pipe-hiding-exit-status:
  test: avoid pipes in git related commands for test
2018-04-11 13:09:56 +09:00
Pratik Karki
a4d4e32a70 test: avoid pipes in git related commands for test
Avoid using pipes downstream of Git commands since the exit codes
of commands upstream of pipes get swallowed, thus potentially
hiding failure of those commands. Instead, capture Git command
output to a file and apply the downstream command(s) to that file.

Signed-off-by: Pratik Karki <predatoramigo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-28 09:30:14 -07:00
Junio C Hamano
c1a7902f9a Merge branch 'ab/fetch-prune'
Clarify how configured fetch refspecs interact with the "--prune"
option of "git fetch", and also add a handy short-hand for getting
rid of stale tags that are locally held.

* ab/fetch-prune:
  fetch: make the --prune-tags work with <url>
  fetch: add a --prune-tags option and fetch.pruneTags config
  fetch tests: add scaffolding for the new fetch.pruneTags
  git-fetch & config doc: link to the new PRUNING section
  git remote doc: correct dangerous lies about what prune does
  git fetch doc: add a new section to explain the ins & outs of pruning
  fetch tests: fetch <url> <spec> as well as fetch [<remote>]
  fetch tests: expand case/esac for later change
  fetch tests: double quote a variable for interpolation
  fetch tests: test --prune and refspec interaction
  fetch tests: add a tag to be deleted to the pruning tests
  fetch tests: re-arrange arguments for future readability
  fetch tests: refactor in preparation for testing tag pruning
  remote: add a macro for "refs/tags/*:refs/tags/*"
  fetch: stop accessing "remote" variable indirectly
  fetch: trivially refactor assignment to ref_nr
  fetch: don't redundantly NULL something calloc() gave us
2018-03-06 14:54:01 -08:00
Ævar Arnfjörð Bjarmason
6317972cff fetch: make the --prune-tags work with <url>
Make the new --prune-tags option work properly when git-fetch is
invoked with a <url> parameter instead of a <remote name>
parameter.

This change is split off from the introduction of --prune-tags due to
the relative complexity of munging the incoming argv, which is easier
to review as a separate change.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:13 -08:00
Ævar Arnfjörð Bjarmason
97716d217c fetch: add a --prune-tags option and fetch.pruneTags config
Add a --prune-tags option to git-fetch, along with fetch.pruneTags
config option and a -P shorthand (-p is --prune). This allows for
doing any of:

    git fetch -p -P
    git fetch --prune --prune-tags
    git fetch -p -P origin
    git fetch --prune --prune-tags origin

Or simply:

    git config fetch.prune true &&
    git config fetch.pruneTags true &&
    git fetch

Instead of the much more verbose:

    git fetch --prune origin 'refs/tags/*:refs/tags/*' '+refs/heads/*:refs/remotes/origin/*'

Before this feature it was painful to support the use-case of pulling
from a repo which is having both its branches *and* tags deleted
regularly, and have our local references to reflect upstream.

At work we create deployment tags in the repo for each rollout, and
there's *lots* of those, so they're archived within weeks for
performance reasons.

Without this change it's hard to centrally configure such repos in
/etc/gitconfig (on servers that are only used for working with
them). You need to set fetch.prune=true globally, and then for each
repo:

    git -C {} config --replace-all remote.origin.fetch "refs/tags/*:refs/tags/*" "^\+*refs/tags/\*:refs/tags/\*$"

Now I can simply set fetch.pruneTags=true in /etc/gitconfig as well,
and users running "git pull" will automatically get the pruning
semantics I want.

Even though "git remote" has corresponding "prune" and "update
--prune" subcommands I'm intentionally not adding a corresponding
prune-tags or "update --prune --prune-tags" mode to that command.

It's advertised (as noted in my recent "git remote doc: correct
dangerous lies about what prune does") as only modifying remote
tracking references, whereas any --prune-tags option is always going
to modify what from the user's perspective is a local copy of the tag,
since there's no such thing as a remote tracking tag.

Ideally add_prune_tags_to_fetch_refspec() would be something that
would use ALLOC_GROW() to grow the 'fetch` member of the 'remote'
struct. Instead I'm realloc-ing remote->fetch and adding the
tag_refspec to the end.

The reason is that parse_{fetch,push}_refspec which allocate the
refspec (ultimately remote->fetch) struct are called many places that
don't have access to a 'remote' struct. It would be hard to change all
their callsites to be amenable to carry around the bookkeeping
variables required for dynamic allocation.

All the other callers of the API first incrementally construct the
string version of the refspec in remote->fetch_refspec via
add_fetch_refspec(), before finally calling parse_fetch_refspec() via
some variation of remote_get().

It's less of a pain to deal with the one special case that needs to
modify already constructed refspecs than to chase down and change all
the other callsites. The API I'm adding is intentionally not
generalized because if we add more of these we'd probably want to
re-visit how this is done.

See my "Re: [BUG] git remote prune removes local tags, depending on
fetch config" (87po6ahx87.fsf@evledraar.gmail.com;
https://public-inbox.org/git/87po6ahx87.fsf@evledraar.gmail.com/) for
more background info.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:13 -08:00
Ævar Arnfjörð Bjarmason
e249ce0ccd fetch tests: add scaffolding for the new fetch.pruneTags
The fetch.pruneTags configuration doesn't exist yet, but will be added
in a subsequent commit. Since testing for it requires adding new
parameters to the test_configured_prune function it's easier to review
this patch first to assert that no functional changes are introduced
yet.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:13 -08:00
Ævar Arnfjörð Bjarmason
e1790f9245 fetch tests: fetch <url> <spec> as well as fetch [<remote>]
When a remote URL is supplied on the command-line the internals of the
fetch are different, in particular the code in get_ref_map(). An
earlier version of the subsequent fetch.pruneTags patch hid a segfault
because the difference wasn't tested for.

Now all the tests are run as both of the variants of:

    git fetch
    git -c [...] fetch $(git config remote.origin.url) $(git config remote.origin.fetch)

I'm using -c because while the [fetch] config just set by
set_config_tristate will be picked up, the remote.origin.* config
won't override it as intended.

Work around that and turn this into a purely command-line test by
always setting the variables on the command-line, and translate any
setting of remote.origin.X into fetch.X.

The reason for choosing the names "name" and "link" as opposed to
e.g. "named" and "url" is because they're the same length, which makes
the test output easier to read as it will be aligned.

Due to shellscript quoting madness it's not worthwhile to do all of
this within a test_expect_success, but do the parts that can easily be
done there, including the one-time setting of variables that don't
change between runs to be used by subsequent runs in the 'prune_type
setup' test.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
59caf52d09 fetch tests: expand case/esac for later change
Expand a compact case/esac statement for a later change that'll add
more logic to the body of the "*" case. This is a whitespace-only
change.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
82f34e03e9 fetch tests: double quote a variable for interpolation
If the $cmdline variable contains arguments with spaces they won't be
interpolated correctly, since the body of the test is single quoted,
and because test-lib.sh does its own eval().

This will be used in a subsequent commit to pass arguments that need
to be quoted to git-fetch, i.e. a file:// path to fetch, which will
have a space in it.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
6fb23f56c1 fetch tests: test --prune and refspec interaction
Add a test for the interaction between explicitly provided refspecs
and fetch.prune.

There's no point in adding this boilerplate to every combination of
unset/false/true, it's instructive and sufficient to show that no
matter if the variable is unset, false or true the refspec on the
command-line overrides any configuration variable.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
ca3065e7e7 fetch tests: add a tag to be deleted to the pruning tests
Add a tag to be deleted to the fetch --prune tests. The tag is always
kept for now, which is the expected behavior, but now I can add a test
for tag pruning in a later commit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
bf16ab7955 fetch tests: re-arrange arguments for future readability
Re-arrange the arguments to the test_configured_prune() function used
in this test to pass the arguments to --fetch last. A subsequent
change will test for more elaborate fetch arguments, including long
refspecs. It'll be more readable to be able to wrap those on a new
line of their own.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
Ævar Arnfjörð Bjarmason
eca142d308 fetch tests: refactor in preparation for testing tag pruning
In a subsequent commit this function will learn to test for tag
pruning, prepare for that by making space for more variables, and
making it clear that "expected" here refers to branches.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:12 -08:00
SZEDER Gábor
927c1a643a t5510: consolidate 'grep' and 'test_i18ngrep' patterns
One of the tests in 't5510-fetch.sh' checks the output of 'git fetch'
using 'test_i18ngrep', and while doing so it prefilters the output
with 'grep' before piping the result into 'test_i18ngrep'.

This prefiltering is unnecessary, with the appropriate pattern
'test_i18ngrep' can do it all by itself.  Furthermore, piping data
into 'test_i18ngrep' will interfere with the linting that will be
added in a later patch.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-08 10:54:27 -08:00
Junio C Hamano
abbf7bd495 Merge branch 'nd/fetch-ref-summary'
Hotfix of a test in a topic that has already been merged to 'master'.

* nd/fetch-ref-summary:
  t5510: skip tests under GETTEXT_POISON build
2016-08-08 14:48:35 -07:00
Vasco Almeida
377d7ded18 t5510: skip tests under GETTEXT_POISON build
Skip tests when running under GETTEXT_POISON build and run them with
C_LOCALE_OUTPUT prerequisite.

These tests are irrelevant under GETTEXT_POISON because they test text
output alignment which GETTEXT_POISON turns useless.

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-26 09:55:18 -07:00
Junio C Hamano
566fdaf611 Merge branch 'nd/fetch-ref-summary'
Improve the look of the way "git fetch" reports what happened to
each ref that was fetched.

* nd/fetch-ref-summary:
  fetch: reduce duplicate in ref update status lines with placeholder
  fetch: align all "remote -> local" output
  fetch: change flag code for displaying tag update and deleted ref
  fetch: refactor ref update status formatting code
  git-fetch.txt: document fetch output
2016-07-19 13:22:21 -07:00
Nguyễn Thái Ngọc Duy
bc437d1020 fetch: reduce duplicate in ref update status lines with placeholder
In the "remote -> local" line, if either ref is a substring of the
other, the common part in the other string is replaced with "*". For
example

    abc                -> origin/abc
    refs/pull/123/head -> pull/123

become

    abc         -> origin/*
    refs/*/head -> pull/123

Activated with fetch.output=compact.

For the record, this output is not perfect. A single giant ref can
push all refs very far to the right and likely be wrapped around. We
may have a few options:

 - exclude these long lines smarter

 - break the line after "->", exclude it from column width calculation

 - implement a new format, { -> origin/}foo, which makes the problem
   go away at the cost of a bit harder to read

 - reverse all the arrows so we have "* <- looong-ref", again still
   hard to read.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-06 11:48:25 -07:00
Nguyễn Thái Ngọc Duy
6bc91f23a6 fetch: align all "remote -> local" output
We do align "remote -> local" output by allocating 10 columns to
"remote". That produces aligned output only for short refs. An extra
pass is performed to find the longest remote ref name (that does not
produce a line longer than terminal width) to produce better aligned
output.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-06 11:48:25 -07:00
Vasco Almeida
1edbaac3bb tests: use test_i18n* functions to suppress false positives
The test functions test_i18ncmp and test_i18ngrep pretend success if run
under GETTEXT_POISON. By using those functions to test output which is
correctly marked as translatable, enables one to detect if the strings
newly marked for translation are from plumbing output. If they are
indeed from plumbing, the test would fail, and the string should be
unmarked, since it is not seen by users.

Thus, it is productive to not have false positives when running the test
under GETTEXT_POISON. This commit replaces normal test functions by
their i18n aware variants in use-cases know to be correctly marked for
translation, suppressing false positives.

Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 15:45:48 -07:00
Junio C Hamano
1fab5e53fc Merge branch 'js/close-packs-before-gc'
* js/close-packs-before-gc:
  t5510: run auto-gc in the foreground
2016-05-10 13:40:30 -07:00
SZEDER Gábor
bb05510e55 t5510: run auto-gc in the foreground
The last test added to 't5510-fetch' in 0898c96281 (fetch: release
pack files before garbage-collecting, 2016-01-13) may sporadically
trigger following error message from the test harness:

  rm: cannot remove 'trash directory.t5510-fetch/auto-gc/.git': Directory not empty

The test in question forces an auto-gc, which, if the system supports
it, runs in the background by default, and occasionally takes long
enough for the test to finish and for 'test_done' to start
housekeeping.  This can lead to the test's 'git gc --auto' in the
background and 'test_done's 'rm -rf $trash' in the foreground racing
each other to create and delete files and directories.  It might just
happen that 'git gc' re-creates a directory that 'rm -rf' already
visited and removed, which ultimately triggers the above error.

Disable detaching the auto-gc process to ensure that it finishes
before the test can continue, thus avoiding this racy situation.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-02 11:28:04 -07:00
Junio C Hamano
68846a92ea Merge branch 'js/close-packs-before-gc'
A small future-proofing of a test added recently.

* js/close-packs-before-gc:
  t5510: do not leave changed cwd
2016-03-10 10:56:42 -08:00
Michael J Gruber
816c19308b t5510: do not leave changed cwd
t5510 carefully keeps the cwd at the test root by using either subshells
or explicit cd'ing back to the root. Use a subshell for the last
subtest, too.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-04 10:22:55 -08:00
Junio C Hamano
9f03176ef6 Merge branch 'jk/drop-rsync-transport'
It turns out "git clone" over rsync transport has been broken when
the source repository has packed references for a long time, and
nobody noticed nor complained about it.

* jk/drop-rsync-transport:
  transport: drop support for git-over-rsync
2016-02-17 10:13:28 -08:00
Jeff King
0d0bac67ce transport: drop support for git-over-rsync
The git-over-rsync protocol is inefficient and broken, and
has been for a long time. It transfers way more objects than
it needs (grabbing all of the remote's "objects/",
regardless of which objects we need). It does its own ad-hoc
parsing of loose and packed refs from the remote, but
doesn't properly override packed refs with loose ones,
leading to garbage results (e.g., expecting the other side
to have an object pointed to by a stale packed-refs entry,
or complaining that the other side has two copies of the
refs[1]).

This latter breakage means that nobody could have
successfully pulled from a moderately active repository
since cd547b4 (fetch/push: readd rsync support, 2007-10-01).

We never made an official deprecation notice in the release
notes for git's rsync protocol, but the tutorial has marked
it as such since 914328a (Update tutorial., 2005-08-30).
And on the mailing list as far back as Oct 2005, we can find
Junio mentioning it as having "been deprecated for quite
some time."[2,3,4]. So it was old news then; cogito had
deprecated the transport in July of 2005[5] (though it did
come back briefly when Linus broke git-http-pull!).

Of course some people professed their love of rsync through
2006, but Linus clarified in his usual gentle manner[6]:

  > Thanks!  This is why I still use rsync, even though
  > everybody and their mother tells me "Linus says rsync is
  > deprecated."

  No. You're using rsync because you're actively doing
  something _wrong_.

The deprecation sentiment was reinforced in 2008, with a
mention that cloning via rsync is broken (with no fix)[7].

Even the commit porting rsync over to C from shell (cd547b4)
lists it as deprecated! So between the 10 years of informal
warnings, and the fact that it has been severely broken
since 2007, it's probably safe to simply remove it without
further deprecation warnings.

[1] http://article.gmane.org/gmane.comp.version-control.git/285101
[2] http://article.gmane.org/gmane.comp.version-control.git/10093
[3] http://article.gmane.org/gmane.comp.version-control.git/17734
[4] http://article.gmane.org/gmane.comp.version-control.git/18911
[5] http://article.gmane.org/gmane.comp.version-control.git/5617
[6] http://article.gmane.org/gmane.comp.version-control.git/19354
[7] http://article.gmane.org/gmane.comp.version-control.git/103635

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-01 13:07:41 -08:00
Junio C Hamano
3c809405cb Merge branch 'js/close-packs-before-gc'
Many codepaths that run "gc --auto" before exiting kept packfiles
mapped and left the file descriptors to them open, which was not
friendly to systems that cannot remove files that are open.  They
now close the packs before doing so.

* js/close-packs-before-gc:
  receive-pack: release pack files before garbage-collecting
  merge: release pack files before garbage-collecting
  am: release pack files before garbage-collecting
  fetch: release pack files before garbage-collecting
2016-01-26 15:40:29 -08:00