git/t/t6035-merge-dir-to-symlink.sh
Clemens Buchacher 1d718a5108 do not overwrite untracked symlinks
Git traditionally overwrites untracked symlinks silently. This will
generally not cause massive data loss, but it is inconsistent with
the behavior for regular files, which are not silently overwritten.

With this change, git refuses to overwrite untracked symlinks by
default. If the user really wants to overwrite the untracked
symlink, he has git-clean and git-checkout -f at his disposal.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-21 22:51:07 -08:00

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#!/bin/sh
test_description='merging when a directory was replaced with a symlink'
. ./test-lib.sh
test_expect_success SYMLINKS 'create a commit where dir a/b changed to symlink' '
mkdir -p a/b/c a/b-2/c &&
> a/b/c/d &&
> a/b-2/c/d &&
> a/x &&
git add -A &&
git commit -m base &&
git tag start &&
rm -rf a/b &&
ln -s b-2 a/b &&
git add -A &&
git commit -m "dir to symlink"
'
test_expect_success SYMLINKS 'checkout does not clobber untracked symlink' '
git checkout HEAD^0 &&
git reset --hard master &&
git rm --cached a/b &&
git commit -m "untracked symlink remains" &&
test_must_fail git checkout start^0
'
test_expect_success SYMLINKS 'a/b-2/c/d is kept when clobbering symlink b' '
git checkout HEAD^0 &&
git reset --hard master &&
git rm --cached a/b &&
git commit -m "untracked symlink remains" &&
git checkout -f start^0 &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'checkout should not have deleted a/b-2/c/d' '
git checkout HEAD^0 &&
git reset --hard master &&
git checkout start^0 &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'setup for merge test' '
git reset --hard &&
test -f a/b-2/c/d &&
echo x > a/x &&
git add a/x &&
git commit -m x &&
git tag baseline
'
test_expect_success SYMLINKS 'Handle D/F conflict, do not lose a/b-2/c/d in merge (resolve)' '
git reset --hard &&
git checkout baseline^0 &&
git merge -s resolve master &&
test -h a/b &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'Handle D/F conflict, do not lose a/b-2/c/d in merge (recursive)' '
git reset --hard &&
git checkout baseline^0 &&
git merge -s recursive master &&
test -h a/b &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'Handle F/D conflict, do not lose a/b-2/c/d in merge (resolve)' '
git reset --hard &&
git checkout master^0 &&
git merge -s resolve baseline^0 &&
test -h a/b &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'Handle F/D conflict, do not lose a/b-2/c/d in merge (recursive)' '
git reset --hard &&
git checkout master^0 &&
git merge -s recursive baseline^0 &&
test -h a/b &&
test -f a/b-2/c/d
'
test_expect_failure SYMLINKS 'do not lose untracked in merge (resolve)' '
git reset --hard &&
git checkout baseline^0 &&
>a/b/c/e &&
test_must_fail git merge -s resolve master &&
test -f a/b/c/e &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'do not lose untracked in merge (recursive)' '
git reset --hard &&
git checkout baseline^0 &&
>a/b/c/e &&
test_must_fail git merge -s recursive master &&
test -f a/b/c/e &&
test -f a/b-2/c/d
'
test_expect_success SYMLINKS 'do not lose modifications in merge (resolve)' '
git reset --hard &&
git checkout baseline^0 &&
echo more content >>a/b/c/d &&
test_must_fail git merge -s resolve master
'
test_expect_success SYMLINKS 'do not lose modifications in merge (recursive)' '
git reset --hard &&
git checkout baseline^0 &&
echo more content >>a/b/c/d &&
test_must_fail git merge -s recursive master
'
test_expect_success SYMLINKS 'setup a merge where dir a/b-2 changed to symlink' '
git reset --hard &&
git checkout start^0 &&
rm -rf a/b-2 &&
ln -s b a/b-2 &&
git add -A &&
git commit -m "dir a/b-2 to symlink" &&
git tag test2
'
test_expect_success SYMLINKS 'merge should not have D/F conflicts (resolve)' '
git reset --hard &&
git checkout baseline^0 &&
git merge -s resolve test2 &&
test -h a/b-2 &&
test -f a/b/c/d
'
test_expect_success SYMLINKS 'merge should not have D/F conflicts (recursive)' '
git reset --hard &&
git checkout baseline^0 &&
git merge -s recursive test2 &&
test -h a/b-2 &&
test -f a/b/c/d
'
test_expect_success SYMLINKS 'merge should not have F/D conflicts (recursive)' '
git reset --hard &&
git checkout -b foo test2 &&
git merge -s recursive baseline^0 &&
test -h a/b-2 &&
test -f a/b/c/d
'
test_done