git/t/t3501-revert-cherry-pick.sh
Matthieu Moy d38a30df7d Be more user-friendly when refusing to do something because of conflict.
Various commands refuse to run in the presence of conflicts (commit,
merge, pull, cherry-pick/revert). They all used to provide rough, and
inconsistant error messages.

A new variable advice.resolveconflict is introduced, and allows more
verbose messages, pointing the user to the appropriate solution.

For commit, the error message used to look like this:

$ git commit
foo.txt: needs merge
foo.txt: unmerged (c34a92682e0394bc0d6f4d4a67a8e2d32395c169)
foo.txt: unmerged (3afcd75de8de0bb5076942fcb17446be50451030)
foo.txt: unmerged (c9785d77b76dfe4fb038bf927ee518f6ae45ede4)
error: Error building trees

The "need merge" line is given by refresh_cache. We add the IN_PORCELAIN
option to make the output more consistant with the other porcelain
commands, and catch the error in return, to stop with a clean error
message. The next lines were displayed by a call to cache_tree_update(),
which is not reached anymore if we noticed the conflict.

The new output looks like:

U       foo.txt
fatal: 'commit' is not possible because you have unmerged files.
Please, fix them up in the work tree, and then use 'git add/rm <file>' as
appropriate to mark resolution and make a commit, or use 'git commit -a'.

Pull is slightly modified to abort immediately if $GIT_DIR/MERGE_HEAD
exists instead of waiting for merge to complain.

The behavior of merge and the test-case are slightly modified to reflect
the usual flow: start with conflicts, fix them, and afterwards get rid of
MERGE_HEAD, with different error messages at each stage.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 13:17:08 -08:00

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#!/bin/sh
test_description='test cherry-pick and revert with renames
--
+ rename2: renames oops to opos
+ rename1: renames oops to spoo
+ added: adds extra line to oops
++ initial: has lines in oops
'
. ./test-lib.sh
test_expect_success setup '
for l in a b c d e f g h i j k l m n o
do
echo $l$l$l$l$l$l$l$l$l
done >oops &&
test_tick &&
git add oops &&
git commit -m initial &&
git tag initial &&
test_tick &&
echo "Add extra line at the end" >>oops &&
git commit -a -m added &&
git tag added &&
test_tick &&
git mv oops spoo &&
git commit -m rename1 &&
git tag rename1 &&
test_tick &&
git checkout -b side initial &&
git mv oops opos &&
git commit -m rename2 &&
git tag rename2
'
test_expect_success 'cherry-pick after renaming branch' '
git checkout rename2 &&
git cherry-pick added &&
test $(git rev-parse HEAD^) = $(git rev-parse rename2) &&
test -f opos &&
grep "Add extra line at the end" opos
'
test_expect_success 'revert after renaming branch' '
git checkout rename1 &&
git revert added &&
test $(git rev-parse HEAD^) = $(git rev-parse rename1) &&
test -f spoo &&
! grep "Add extra line at the end" spoo
'
test_expect_success 'revert forbidden on dirty working tree' '
echo content >extra_file &&
git add extra_file &&
test_must_fail git revert HEAD 2>errors &&
grep "Your local changes would be overwritten by " errors
'
test_done