git/t/t1012-read-tree-df.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 D/F conflict corner cases'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-read-tree.sh
maketree () {
(
rm -f .git/index .git/index.lock &&
git clean -d -f -f -q -x &&
name="$1" &&
shift &&
for it
do
path=$(expr "$it" : '\([^:]*\)') &&
mkdir -p $(dirname "$path") &&
echo "$it" >"$path" &&
git update-index --add "$path" || exit
done &&
git tag "$name" $(git write-tree)
)
}
settree () {
rm -f .git/index .git/index.lock &&
git clean -d -f -f -q -x &&
git read-tree "$1" &&
git checkout-index -f -q -u -a &&
git update-index --refresh
}
checkindex () {
git ls-files -s |
sed "s|^[0-7][0-7]* $_x40 \([0-3]\) |\1 |" >current &&
cat >expect &&
test_cmp expect current
}
test_expect_success setup '
maketree O-000 a/b-2/c/d a/b/c/d a/x &&
maketree A-000 a/b-2/c/d a/b/c/d a/x &&
maketree A-001 a/b-2/c/d a/b/c/d a/b/c/e a/x &&
maketree B-000 a/b-2/c/d a/b a/x &&
maketree O-010 t-0 t/1 t/2 t=3 &&
maketree A-010 t-0 t t=3 &&
maketree B-010 t/1: t=3: &&
maketree O-020 ds/dma/ioat.c ds/dma/ioat_dca.c &&
maketree A-020 ds/dma/ioat/Makefile ds/dma/ioat/registers.h &&
:
'
test_expect_success '3-way (1)' '
settree A-000 &&
read_tree_u_must_succeed -m -u O-000 A-000 B-000 &&
checkindex <<-EOF
3 a/b
0 a/b-2/c/d
1 a/b/c/d
2 a/b/c/d
0 a/x
EOF
'
test_expect_success '3-way (2)' '
settree A-001 &&
read_tree_u_must_succeed -m -u O-000 A-001 B-000 &&
checkindex <<-EOF
3 a/b
0 a/b-2/c/d
1 a/b/c/d
2 a/b/c/d
2 a/b/c/e
0 a/x
EOF
'
test_expect_success '3-way (3)' '
settree A-010 &&
read_tree_u_must_succeed -m -u O-010 A-010 B-010 &&
checkindex <<-EOF
2 t
1 t-0
2 t-0
1 t/1
3 t/1
1 t/2
0 t=3
EOF
'
test_expect_success '2-way (1)' '
settree O-020 &&
read_tree_u_must_succeed -m -u O-020 A-020 &&
checkindex <<-EOF
0 ds/dma/ioat/Makefile
0 ds/dma/ioat/registers.h
EOF
'
test_done