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Commit Graph

106 Commits

Author SHA1 Message Date
Junio C Hamano
d57306c794 Create objects/info/ directory in init-db.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-20 10:59:28 -07:00
Johannes Schindelin
35cc4bcd10 [PATCH] When copying or renaming, keep the mode, please
Without this patch, git-apply does not retain the mode when renaming or
copying files.

[jc: Good catch, Johannes.  I added a test case to demonstrate the
breackage in the original.]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-17 12:13:12 -07:00
Brad Roberts
e54c5ea93e [PATCH] fix null TZ problems on os/x
It seems that the localtime() libc routine doesn't care for finding a TZ
that's empty.  It's ok with TZ not being set.  Setting the TZ to GMT allowed
these tests to pass.

$ uname -v
Darwin Kernel Version 7.9.0: Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/RELEASE_PPC

Signed-off-by: Brad Roberts <braddr@puremagic.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-13 18:28:54 -07:00
Pavel Roskin
41184273d1 [PATCH] Trapping exit in tests, using return for errors: further fixes.
"return" from a test would leave the exit trap set, which could cause a
spurious error message if it's the last test in the script or
--immediate is used.

The easiest solution would be to have a global trap that is set when
test-lib.sh is sourced and unset either by test_done(), error() or by
test_failure_() with --immediate.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-11 18:26:16 -07:00
Pavel Roskin
4d9d62fa7c [PATCH] Trapping exit in tests, using return for errors
I have noticed that "make test" fails without any explanations when the
"merge" utility is missing.  I don't think tests should be silent in
case of failure.

It turned out that the particular test was using "exit" to interrupt the
test in case of an error.  This caused the whole test script to exit.
No further tests would be run even if "--immediate" wasn't specified.
No error message was printed.

This patch does following:

All instances of "exit", "exit 1" and "(exit 1)" in tests have been
replaced with "return 1".  In fact, "(exit 1)" had no effect.

File descriptor 5 is duplicated from file descriptor 1.  This is needed
to print important error messages from tests.

New function test_run_() has been introduced.  Any "return" in the test
would merely cause that function to return without skipping calls to
test_failure_() and test_ok_().  The new function also traps "exit" and
treats it like a fatal error (in case somebody reintroduces "exit" in
the tests).

test_expect_failure() and test_expect_success() check both the result of
eval and the return value of test_run_().  If the later is not 0, it's
always a failure because it indicates the the test didn't complete.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-11 18:26:16 -07:00
Pavel Roskin
d9bdd39eee [PATCH] Need to set PAGER in tests
"t5400-send-pack.sh --verbose" stops waiting for user input.  It happens
because "git log" uses less for output now.  To prevent this, PAGER
should be set to cat.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-11 18:26:15 -07:00
Pavel Roskin
da7bc9b081 [PATCH] Missing test_done
All test scripts should end with test_done, which reports the test
results.  In the future, it could be used for other purposes, e.g. to
distinguish graceful end from "exit" in a test.  This patch fixes
scripts that don't call test_done.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-11 18:26:15 -07:00
Junio C Hamano
8e832ebce6 String comparison of test is done with '=', not '=='.
Caught this during a test setting /bin/sh to (d)ash.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-11 18:26:14 -07:00
Johannes Schindelin
ef0bd2e6e6 [PATCH] Fix git-rev-parse's parent handling
git-rev-parse HEAD^1 would fail, because of an off-by-one bug (but HEAD^
would yield the expected result). Also, when the parent does not exist, do
not silently return an incorrect SHA1. Of course, this no longer applies
to git-rev-parse alone, but every user of get_sha1().

While at it, add a test.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-10 10:22:49 -07:00
Junio C Hamano
eb3c430a85 Skip --merge-order test when built with NO_OPENSSL
When built with NO_OPENSSL, rev-list --merge-order does not
work, causing t6001 test to fail.  Detect that and skip this
test to allow continuing to the rest of the tests.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-29 17:21:53 -07:00
Junio C Hamano
1df092d211 Documentation and tests: ls-files exclude pattern.
Update the tests and documentation to match the new "last one
determines its fate" semantics.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-29 17:21:47 -07:00
Johannes Schindelin
148519b7dc [PATCH] support bc version 1.04
Test t6002 unnecessarily fails when bc is a bit older than average.

Signed-off-by: Johannes.Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-29 00:12:03 -07:00
Linus Torvalds
bdf25142aa Fix potential send-pack SIGSEGV
The check that the source is ahead of the destination incorrectly expects 
pop_most_recent_commit() to gracefully handle an empty list. 

Fix by just checking the list itself, rather than the return value of the 
pop function.

[jc: I did the test script that demonstrated the problem]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-26 22:23:18 -07:00
Junio C Hamano
2bbcddee87 Adjust diff-raw tests to the status letter change.
We use 'A' for added files instead of 'N' to make the it
visually easier to distinguish from 'M' now.

While we are at it, make the test scripts executable.  Yes, I
know it does not matter because t/Makefile runs them explicitly
with "sh tXXXX-blah.sh", but being consistent is always better.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-26 00:22:43 -07:00
Junio C Hamano
f87f949748 git-ls-files: --exclude mechanism updates.
Add --exclude-per-directory=<name> option that specifies a file
to contain exclude patterns local to that directory and its
subdirectories.  Update the exclusion logic to be able to say
"include files that match this more specific pattern, even
though later exclude patterns may match them".  Also enhances
that a pattern can contain '/' in which case fnmatch is called
with FNM_PATHNAME flag to match the entire path. 

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-25 17:03:52 -07:00
Junio C Hamano
bf0dd8a8de [PATCH] Test framework: prettyprint the failed command.
The output from a failure case had the test description message
and the first line of the actual test script concatenated on the
same line, which was ugly.  Correct the output routine a bit to
make it more readable.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-22 20:34:16 -07:00
Junio C Hamano
8b64647dd9 [PATCH] apply.c: handle incomplete lines correctly.
The parsing code had a bug that failed to recognize an
incomplete line at the end of a fragment, and the fragment
application code had a comparison bug to recognize such.  Fix
them to handle incomplete lines correctly.

Add a test script for patches with various combinations of
complete and incomplete lines to make sure the fix works.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-22 10:26:01 -07:00
Junio C Hamano
776566000f [PATCH] Prevent t6000 series from dropping useless sed.script in t/
The Makefile in the test suite directory considers any file
matching t[0-9][0-9][0-9][0-9]-*.sh as the top-level test script
to be executed.  Unfortunately this was not documented, and the
common test library, t6000-lib.sh was named to match that
pattern.  This caused t6000-lib.sh to be called from Makefile as
the top-level program, causing it to leave t/sed.script file
behind.  Rename it to t6000lib.sh to prevent this, and document
the naming convention a bit more clearly.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-07 15:53:35 -07:00
Jon Seymour
28346d2d3c [PATCH] Write sed script directly into temp file, rather than a variable
When sed uses \n rather than ; as a separator (for BSD sed(1) compat),
it is cleaner to use a file directly, rather than an environment
variable containing \n characters.

This change changes t/t6000 write to sed.script directly and changes
the other tests to remove knowledge of sed.script.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 18:00:28 -07:00
Jon Seymour
f573571a21 [PATCH] Add t/t6003 with some --topo-order tests
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 18:00:28 -07:00
Jon Seymour
4d3a63ba3a [PATCH] Add a t/t6001 test case for a --merge-order bug
This test case demonstrates a problem with --merge-order.

A
|
B
|\
C D
|/
E
|
F

git-rev-list --merge-order A B doesn't produce the expected output of

A
B
D
C
E
F

The problem is fixed by a subsequent patch.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 10:29:30 -07:00
Jon Seymour
f6069c5995 [PATCH] Change the sed seperator in t/t6000-lib.sh.
This trivial patch removes the semicolon as the sed seperator in the t/t6000-lib.sh test script
and replaces it with white space.  This makes BSD sed(1) much happier.

Signed-off-by: Mark Allen <mrallen1@yahoo.com>
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 09:26:13 -07:00
Jon Seymour
8904591a9b [PATCH] Introduce unit tests for git-rev-list --bisect
This patch introduces some unit tests for the git-rev-list --bisect functionality.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 09:26:13 -07:00
Jon Seymour
ce11895d5c [PATCH] Factor out useful test case infrastructure from t/t6001... into t/t6000-lib.sh
Functions that are useful to other t6xxx testcases are moved into t6000-lib.sh

To use these functions in a test case, use a test-case pre-amble like:

. ./test-lib.sh
. ../t6000-lib.sh # t6xxx specific functions

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-06 09:26:13 -07:00
Jon Seymour
a61eea6abd [PATCH] Fixup t/t5300 unit tests broken by 5f3de58ff85c49620ae2a1722d8d4d37c881a054
This patch fixes up the t/t5300 unit tests which were broken by the changes in:

	Make the name of a pack-file depend on the objects packed there-in.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-04 08:22:32 -07:00
Jon Seymour
9d89d19c48 [PATCH] Remove unnecessary sort from t6001 testcase
This patch removes an unnecessary sort from the t6001 testcase.

Sorts were previously necessary when testing non --merge-order cases
because the output order wasn't entirely deterministic unless commit
date was fixed.

However, commit dates are now fixed, so the need for a sort has
disappeared.  So the sort has been removed.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 20:53:10 -07:00
Jon Seymour
3ed3567890 [PATCH] Fix broken t6001 test case
This fix fixes a t/t6001 test case break that was hidden by a bug in the
test case infrastructure.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 20:53:10 -07:00
Jon Seymour
2ba1beebd3 [PATCH] Demonstrate broken t6001 test case function
Junio discovered a problem where an actual test case break was hidden
because pipelines are not handled properly by the test infrastructure in
t6001.

This patch fixes the broken infrastructure (and demonstrates the break
explicitly).

A subsequent patch in this series will fix the test case so that it
doesn't fail.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 20:53:10 -07:00
Jon Seymour
99c2bc9300 [PATCH] Fix for git-rev-list --merge-order B ^A (A,B share common base) [rev 2]
This patch makes --merge-order produce the same list as git-rev-list
without --merge-order specified.

In particular, if the graph looks like this:

A
| B
|/
C
|
D

The both git-rev-list B ^A and git-rev-list --merge-order will produce B.

The unit tests have been changed to reflect the fact that the prune
points are now formally part of the start list that is used to perform
the --merge-order sort.

That is: git-rev-list --merge-order A ^D used to produce

= A
| C

It now produces:

^ A
| C

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 20:53:10 -07:00
Jon Seymour
da4b932a0c [PATCH] Test case that demonstrates problem with --merge-order ^ processing
Added a test case that shows that --merge-order doesn't produce the
correct result in the following case.

A
|
| B
|/
C
|
D

git-rev-list --merge-order A ^B should produce just A. Instead
it produces BCD.

A subsequent patch will fix this defect.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 20:53:10 -07:00
Junio C Hamano
e06eb4c6f5 [PATCH] Adjust t5300 test for unpack-objects change
It now always read from standard input and rejects non-flag
arguments.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 09:53:57 -07:00
Junio C Hamano
f9253394a2 [PATCH] Add git-verify-pack command.
Given a list of <pack>.idx files, this command validates the
index file and the corresponding .pack file for consistency.

This patch also uses the same validation mechanism in fsck-cache
when the --full flag is used.

During normal operation, sha1_file.c verifies that a given .idx
file matches the .pack file by comparing the SHA1 checksum
stored in .idx file and .pack file as a minimum sanity check.
We may further want to check the pack signature and version when
we map the pack, but that would be a separate patch.

Earlier, errors to map a pack file was not flagged fatal but led
to a random fatal error later.  This version explicitly die()s
when such an error is detected.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-29 09:11:39 -07:00
Linus Torvalds
d6771bd060 Fix another test that broke with the recent git-init-db update
t5300-pack-object.sh test 8 expected to have to create the "pack"
directory itself, and was unhappy when it already existed.
2005-06-27 19:48:02 -07:00
Mark Allen
cebe403bfe [PATCH] replace sha1sum with sum in t/t1002
This replaces sha1sum(1) with sum(1) in t/t1002.  GNU sum(1) runs in
"BSD compatibility" mode by default, and not all systems have GNU
coreutils.  On any system without GNU coreutils (or sha1sum) t1002 will
fail.  This patch should make t1002 complete successfully everywhere
that sum(1) runs.

I've tested this on Darwin and Linux; it works on both platforms.

Signed-off-by: Mark Allen <mrallen1@yahoo.com>
Acked-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-27 19:40:21 -07:00
Linus Torvalds
eb7add9f6b Fix up test that counted subdirectories in ".git/objects"
Now there are 257 of them (256 numeric ones, and the new "pack" directory)
2005-06-27 19:10:01 -07:00
Junio C Hamano
1f688557c0 [PATCH] Teach read_sha1_file() and friends about packed git object store.
GIT_OBJECT_DIRECTORY and GIT_ALTERNATE_OBJECT_DIRECTORIES can
have the "pack" subdirectory that houses "packed GIT" files
produced by git-pack-objects (e.g. .git/objects/pack/foo.pack
and .git/objects/pack/foo.idx; always store them as pairs).  The
following functions in sha1_file.c can then read object contents
from such packed file:

 - sha1_object_info()
 - has_sha1_file()
 - read_sha1_file()

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-27 15:27:51 -07:00
Junio C Hamano
c4584ae3fd [PATCH] Remove "delta" object representation.
Packed delta files created by git-pack-objects seems to be the
way to go, and existing "delta" object handling code has exposed
the object representation details to too many places.  Remove it
while we refactor code to come up with a proper interface in
sha1_file.c.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-27 15:27:51 -07:00
Junio C Hamano
8ee378a0f0 [PATCH] Finish initial cut of git-pack-object/git-unpack-object pair.
This finishes the initial round of git-pack-object /
git-unpack-object pair.  They are now good enough to be used as
a transport medium:

 - Fix delta direction in pack-objects; the original was
   computing delta to create the base object from the object to
   be squashed, which was quite unfriendly for unpacker ;-).

 - Add a script to test the very basics.

 - Implement unpacker for both regular and deltified objects.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-26 07:33:23 -07:00
Junio C Hamano
b155725dae [PATCH] Fix oversimplified optimization for add_cache_entry().
An earlier change to optimize directory-file conflict check
broke what "read-tree --emu23" expects.  This is fixed by this
commit.

(1) Introduces an explicit flag to tell add_cache_entry() not to
    check for conflicts and use it when reading an existing tree
    into an empty stage --- by definition this case can never
    introduce such conflicts.

(2) Makes read-cache.c:has_file_name() and read-cache.c:has_dir_name()
    aware of the cache stages, and flag conflict only with paths
    in the same stage.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:52:16 -07:00
Junio C Hamano
1abb3f14c8 [PATCH] Add more tests for read-tree --emu23.
This adds more tests for --emu23.  One is to show how it can
carry forward more local changes than the straightforward
two-way fast forward, and another is to show the recent
overeager optimization of directory/file conflict check broke
things, which will be fixed in the next commit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:52:16 -07:00
Jon Seymour
6e4c0a5109 [PATCH] A test case that demonstrates a problem with merges with two roots.
git-rev-list --merge-order is omitting one of the roots when
displaying a merge containing two distinct roots.

A subsequent patch will fix the problem.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-22 19:15:04 -07:00
Junio C Hamano
fae22ac9d7 [PATCH] git-apply: tests for --stat and --summary.
This adds tests (which also serves demonstration) for the --stat
and --summary flags to the git-apply command.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-22 10:23:49 -07:00
Jon Seymour
dec5eda786 [PATCH] Additional git-rev-list unit tests to demonstrate problems that require fixes
1. --merge-order doesn't deal properly with a specified head that has no parent

   * FAIL 11: head has no parent

2. --merge-order doesn't deal properly with arguments of the form
     head ^head

   * FAIL 30: head ^head --merge-order git-rev-list --merge-order
     --show-breaks a3 ^a3

3. if one of the specified heads is reachable from the other, the
   head gets printed twice and this causes problems for upcoming
   versions of gitk. This is true for both --merge-order and non
   --merge-order style of invocations.
    * FAIL 24: one specified head reachable from another a4, c3, --merge-order
    * FAIL 26: one specified head reachable from another a4, c3, no --merge-order
    * FAIL 27: one specified head reachable from another c3, a4, no --merge-order

4. --merge-order aborts with commits that list the same parent twice...it should handle it more gracefully.
    * no longer unit testable

5. broken interaction between --merge-order and --max-age
   previously posted as:

    "[PATCH 1/2] Test case that demonstrates problem with --merge-order, --max-age interaction"
    * FAIL 23: --max-age=c3, --merge-order

Later patches in this patch set fix these problems.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-19 20:13:18 -07:00
Junio C Hamano
366175ef8c [PATCH] Rework -B output.
Patch for a completely rewritten file detected by the -B flag
was shown as a pair of creation followed by deletion in earlier
versions.  This was an misguided attempt to make reviewing such
a complete rewrite easier, and unnecessarily ended up confusing
git-apply.  Instead, show the entire contents of old version
prefixed with '-', followed by the entire contents of new
version prefixed with '+'.  This gives the same easy-to-review
for human consumer while keeping it a single, regular
modification patch for machine consumption, something that even
GNU patch can grok.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-19 20:13:18 -07:00
Junio C Hamano
4727f64003 [PATCH] Make -C less eager.
Like diff-tree, this patch makes -C option for diff-* brothers
to use only pre-image of modified files as rename/copy detection
by default.  Give --find-copies-harder to use unmodified files
to find copies from as well.

This also fixes "diff-files -C" problem earlier noticed by
Linus.  It was feeding the null sha1 even when the file in the
work tree was known to match what is in the index file.  This
resulted in diff-files showing everything in the project.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-19 20:13:18 -07:00
Mark Allen
7737314de7 [PATCH] Unset TZ in t5000
Unset TZ to force GMT in test #4 and add a set of parens around
the length function in the awk script.

Signed-off-by: Mark Allen <mrallen1@yahoo.com>
Acked-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-14 12:08:06 -07:00
Junio C Hamano
036d51cc55 [PATCH] read-tree: loosen too strict index requirements
This patch teaches read-tree 3-way merge that, when only "the
other tree" changed a path, and if the index file already has
the same change, we are not in a situation that would clobber
the index and the work tree, and lets the merge succeed; this is
case #14ALT in t1000 test.  It does not change the result of the
merge, but prevents it from failing when it does not have to.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-12 20:40:20 -07:00
Junio C Hamano
32192e6622 [PATCH] Finish making --emu23 equivalent to pure 2-way merge.
This adds #3ALT rule (and #2ALT rule for symmetry) to the
read-tree 3-way merge logic that collapses paths that are added
only in one branch and not in the other internally.

This makes --emu23 to succeed in the last remaining case where
the pure 2-way merge succeeded and earlier one failed.  Running
diff between t1001 and t1005 test scripts shows that the only
difference between the two is that --emu23 can leave the states
into separate stages so that the user can use usual 3-way merge
resolution techniques to carry forward the local changes when
pure 2-way merge would have refused to run.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-12 20:40:20 -07:00
Junio C Hamano
e7f9bc411c [PATCH] read-tree: fix too strong index requirement #5ALT
This fixes too strong index requirement 3-way merge enforces in
one case: the same file is added in both branches.

In this case, the original code insisted that if the index file
has that path, it must match our branch and be up-to-date.
However in this particular case, it only has to match it, and
can be dirty.  We just need to make sure that we keep the
work-tree copy instead of checking out the merge result.

The resolution of such a path, however, cannot be left to
outside script, because we will not keep the original stage0
entries for unmerged paths when read-tree finishes, and at that
point, the knowledge of "if we resolve it to match the new file
added in both branches, the merge succeeds and the work tree
would not lose information, but we should _not_ update the work
tree from the resulting index file" is lost.  For this reason,
the now code needs to resolve this case (#5ALT) internally.

This affects some existing tests in the test suite, but all in
positive ways.  In t1000 (3-way test), this #5ALT case now gets
one stage0 entry, instead of an identical stage2 and stage3
entry pair, for such a path, and one test that checked for merge
failure (because the test assumed the "stricter-than-necessary"
behaviour) does not have to fail anymore.  In t1005 (emu23
test), two tests that involves a case where the work tree
already had a change introduced in the upstream (aka "merged
head"), the merge succeeds instead of failing.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-12 20:40:20 -07:00
Junio C Hamano
03efa6d9a4 [PATCH] read-tree --emu23.
This new flag causes two-way fast forward to internally use the
three-way merge mechanism.  This behaviour is intended to offer
a better fast forward semantics when used in a dirty work tree.

The new test t1005 is parallel to the existing t1001 "pure
2-way" tests, but some parts that are commented out would fail.
These failures are due to three-way merge enforcing too strict
index requirements for cases that could succeed.  This problem
will be addressed by later patches.

Without even changing three-way mechanism, the --emu23 two-way
fast forward already gives the user an easier-to-handle merge
result when a file that "merged head" updates has local
modifications.  This is demonstrated as "case 16" test in t1005.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-12 20:40:20 -07:00