git/t/t1004-read-tree-m-u-wf.sh
Jens Lehmann ea5070c91f Teach read-tree the -n|--dry-run option
The option can be used to check if read-tree with the same set of other
options like "-m" and "-u" would succeed without actually changing either
the index or the working tree.

The relevant tests in the t10?? range were extended to do a read-tree -n
before the real read-tree to make sure neither the index nor any local
files were changed with -n and the same exit code as without -n is
returned. The helper functions added for that purpose reside in the new
t/lib-read-tree.sh file.

The only exception is #13 in t1004 ("unlinking an un-unlink-able
symlink"). As this is an issue of wrong directory permissions it is not
detected with -n.

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-25 15:04:25 -07:00

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#!/bin/sh
test_description='read-tree -m -u checks working tree files'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-read-tree.sh
# two-tree test
test_expect_success 'two-way setup' '
mkdir subdir &&
echo >file1 file one &&
echo >file2 file two &&
echo >subdir/file1 file one in subdirectory &&
echo >subdir/file2 file two in subdirectory &&
git update-index --add file1 file2 subdir/file1 subdir/file2 &&
git commit -m initial &&
git branch side &&
git tag -f branch-point &&
echo file2 is not tracked on the master anymore &&
rm -f file2 subdir/file2 &&
git update-index --remove file2 subdir/file2 &&
git commit -a -m "master removes file2 and subdir/file2"
'
test_expect_success 'two-way not clobbering' '
echo >file2 master creates untracked file2 &&
echo >subdir/file2 master creates untracked subdir/file2 &&
if err=`read_tree_u_must_succeed -m -u master side 2>&1`
then
echo should have complained
false
else
echo "happy to see $err"
fi
'
echo file2 >.gitignore
test_expect_success 'two-way with incorrect --exclude-per-directory (1)' '
if err=`read_tree_u_must_succeed -m --exclude-per-directory=.gitignore master side 2>&1`
then
echo should have complained
false
else
echo "happy to see $err"
fi
'
test_expect_success 'two-way with incorrect --exclude-per-directory (2)' '
if err=`read_tree_u_must_succeed -m -u --exclude-per-directory=foo --exclude-per-directory=.gitignore master side 2>&1`
then
echo should have complained
false
else
echo "happy to see $err"
fi
'
test_expect_success 'two-way clobbering a ignored file' '
read_tree_u_must_succeed -m -u --exclude-per-directory=.gitignore master side
'
rm -f .gitignore
# three-tree test
test_expect_success 'three-way not complaining on an untracked path in both' '
rm -f file2 subdir/file2 &&
git checkout side &&
echo >file3 file three &&
echo >subdir/file3 file three &&
git update-index --add file3 subdir/file3 &&
git commit -a -m "side adds file3 and removes file2" &&
git checkout master &&
echo >file2 file two is untracked on the master side &&
echo >subdir/file2 file two is untracked on the master side &&
read_tree_u_must_succeed -m -u branch-point master side
'
test_expect_success 'three-way not clobbering a working tree file' '
git reset --hard &&
rm -f file2 subdir/file2 file3 subdir/file3 &&
git checkout master &&
echo >file3 file three created in master, untracked &&
echo >subdir/file3 file three created in master, untracked &&
if err=`read_tree_u_must_succeed -m -u branch-point master side 2>&1`
then
echo should have complained
false
else
echo "happy to see $err"
fi
'
echo >.gitignore file3
test_expect_success 'three-way not complaining on an untracked file' '
git reset --hard &&
rm -f file2 subdir/file2 file3 subdir/file3 &&
git checkout master &&
echo >file3 file three created in master, untracked &&
echo >subdir/file3 file three created in master, untracked &&
read_tree_u_must_succeed -m -u --exclude-per-directory=.gitignore branch-point master side
'
test_expect_success '3-way not overwriting local changes (setup)' '
git reset --hard &&
git checkout -b side-a branch-point &&
echo >>file1 "new line to be kept in the merge result" &&
git commit -a -m "side-a changes file1" &&
git checkout -b side-b branch-point &&
echo >>file2 "new line to be kept in the merge result" &&
git commit -a -m "side-b changes file2" &&
git checkout side-a
'
test_expect_success '3-way not overwriting local changes (our side)' '
# At this point, file1 from side-a should be kept as side-b
# did not touch it.
git reset --hard &&
echo >>file1 "local changes" &&
read_tree_u_must_succeed -m -u branch-point side-a side-b &&
grep "new line to be kept" file1 &&
grep "local changes" file1
'
test_expect_success '3-way not overwriting local changes (their side)' '
# At this point, file2 from side-b should be taken as side-a
# did not touch it.
git reset --hard &&
echo >>file2 "local changes" &&
read_tree_u_must_fail -m -u branch-point side-a side-b &&
! grep "new line to be kept" file2 &&
grep "local changes" file2
'
test_expect_success SYMLINKS 'funny symlink in work tree' '
git reset --hard &&
git checkout -b sym-b side-b &&
mkdir -p a &&
>a/b &&
git add a/b &&
git commit -m "side adds a/b" &&
rm -fr a &&
git checkout -b sym-a side-a &&
mkdir -p a &&
ln -s ../b a/b &&
git add a/b &&
git commit -m "we add a/b" &&
read_tree_u_must_succeed -m -u sym-a sym-a sym-b
'
test_expect_success SYMLINKS,SANITY 'funny symlink in work tree, un-unlink-able' '
rm -fr a b &&
git reset --hard &&
git checkout sym-a &&
chmod a-w a &&
test_must_fail git read-tree -m -u sym-a sym-a sym-b
'
# clean-up from the above test
chmod a+w a 2>/dev/null
rm -fr a b
test_expect_success 'D/F setup' '
git reset --hard &&
git checkout side-a &&
rm -f subdir/file2 &&
mkdir subdir/file2 &&
echo qfwfq >subdir/file2/another &&
git add subdir/file2/another &&
test_tick &&
git commit -m "side-a changes file2 to directory"
'
test_expect_success 'D/F' '
git checkout side-b &&
read_tree_u_must_succeed -m -u branch-point side-b side-a &&
git ls-files -u >actual &&
(
a=$(git rev-parse branch-point:subdir/file2)
b=$(git rev-parse side-a:subdir/file2/another)
echo "100644 $a 1 subdir/file2"
echo "100644 $a 2 subdir/file2"
echo "100644 $b 3 subdir/file2/another"
) >expect &&
test_cmp actual expect
'
test_expect_success 'D/F resolve' '
git reset --hard &&
git checkout side-b &&
git merge-resolve branch-point -- side-b side-a
'
test_expect_success 'D/F recursive' '
git reset --hard &&
git checkout side-b &&
git merge-recursive branch-point -- side-b side-a
'
test_done