Using this option tells read-tree to not update the index. That makes it
possible to check if updating the index would be successful without
changing it.
As using --dry-run is expected to have no side effects, this option makes
no sense together with "-u".
Signed-off-by: Jens Lehmann <Jens.Lehmann@xxxxxx>
---
Now with updated tests.
Documentation/git-read-tree.txt | 5 ++
builtin/read-tree.c | 7 ++-
t/t1000-read-tree-m-3way.sh | 96 +++++++++++++++++++++++----------------
t/t1001-read-tree-m-2way.sh | 48 +++++++++++--------
t/t1002-read-tree-m-u-2way.sh | 4 ++
5 files changed, 98 insertions(+), 62 deletions(-)
diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 26fdadc..a35849f 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -53,6 +53,11 @@ OPTIONS
trees that are not directly related to the current
working tree status into a temporary index file.
+-n::
+--dry-run::
+ Don't write the index file. This option isn't allowed together
+ with -u.
+
-v::
Show the progress of checking files out.
diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index 93c9281..693576f 100644
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -98,7 +98,7 @@ static struct lock_file lock_file;
int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
{
- int i, newfd, stage = 0;
+ int i, newfd, stage = 0, dry_run = 0;
unsigned char sha1[20];
struct tree_desc t[MAX_UNPACK_TREES];
struct unpack_trees_options opts;
@@ -130,6 +130,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
PARSE_OPT_NONEG, exclude_per_directory_cb },
OPT_SET_INT('i', NULL, &opts.index_only,
"don't check the working tree after merging", 1),
+ OPT__DRY_RUN(&dry_run, "don't update the index"),
OPT_SET_INT(0, "no-sparse-checkout", &opts.skip_sparse_checkout,
"skip applying sparse checkout filter", 1),
OPT_SET_INT(0, "debug-unpack", &opts.debug_unpack,
@@ -183,6 +184,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
die("--exclude-per-directory is meaningless unless -u");
if (opts.merge && !opts.index_only)
setup_work_tree();
+ if (opts.update && dry_run)
+ die("--dry-run contradicts -u");
if (opts.merge) {
if (stage < 2)
@@ -219,7 +222,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
if (unpack_trees(nr_trees, t, &opts))
return 128;
- if (opts.debug_unpack)
+ if (opts.debug_unpack || dry_run)
return 0; /* do not write the index out */
/*
diff --git a/t/t1000-read-tree-m-3way.sh b/t/t1000-read-tree-m-3way.sh
index ca8a409..a386cfd 100755
--- a/t/t1000-read-tree-m-3way.sh
+++ b/t/t1000-read-tree-m-3way.sh
@@ -131,13 +131,29 @@ check_result () {
test_cmp expected current
}
+read_tree_must_succeed () {
+ git ls-files -s >pre-dry-run &&
+ git read-tree -n "$@" &&
+ git ls-files -s >post-dry-run &&
+ test_cmp pre-dry-run post-dry-run &&
+ git read-tree "$@"
+}
+
+read_tree_must_fail () {
+ git ls-files -s >pre-dry-run &&
+ test_must_fail git read-tree -n "$@" &&
+ git ls-files -s >post-dry-run &&
+ test_cmp pre-dry-run post-dry-run &&
+ test_must_fail git read-tree "$@"
+}
+
# This is done on an empty work directory, which is the normal
# merge person behaviour.
test_expect_success \
'3-way merge with git read-tree -m, empty cache' \
"rm -fr [NDMALTS][NDMALTSF] Z &&
rm .git/index &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
# This starts out with the first head, which is the normal
@@ -146,9 +162,9 @@ test_expect_success \
'3-way merge with git read-tree -m, match H' \
"rm -fr [NDMALTS][NDMALTSF] Z &&
rm .git/index &&
- git read-tree $tree_A &&
+ read_tree_must_succeed $tree_A &&
git checkout-index -f -u -a &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
: <<\END_OF_CASE_TABLE
@@ -211,7 +227,7 @@ test_expect_success '1 - must not have an entry not in A.' "
rm -f .git/index XX &&
echo XX >XX &&
git update-index --add XX &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -219,7 +235,7 @@ test_expect_success \
"rm -f .git/index NA &&
cp .orig-B/NA NA &&
git update-index --add NA &&
- git read-tree -m $tree_O $tree_A $tree_B"
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B"
test_expect_success \
'2 - matching B alone is OK in !O && !A && B case.' \
@@ -227,14 +243,14 @@ test_expect_success \
cp .orig-B/NA NA &&
git update-index --add NA &&
echo extra >>NA &&
- git read-tree -m $tree_O $tree_A $tree_B"
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B"
test_expect_success \
'3 - must match A in !O && A && !B case.' \
"rm -f .git/index AN &&
cp .orig-A/AN AN &&
git update-index --add AN &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -243,7 +259,7 @@ test_expect_success \
cp .orig-A/AN AN &&
git update-index --add AN &&
echo extra >>AN &&
- git read-tree -m $tree_O $tree_A $tree_B"
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B"
test_expect_success \
'3 (fail) - must match A in !O && A && !B case.' "
@@ -251,7 +267,7 @@ test_expect_success \
cp .orig-A/AN AN &&
echo extra >>AN &&
git update-index --add AN &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -259,7 +275,7 @@ test_expect_success \
"rm -f .git/index AA &&
cp .orig-A/AA AA &&
git update-index --add AA &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -268,7 +284,7 @@ test_expect_success \
cp .orig-A/AA AA &&
git update-index --add AA &&
echo extra >>AA &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -277,7 +293,7 @@ test_expect_success \
cp .orig-A/AA AA &&
echo extra >>AA &&
git update-index --add AA &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -285,7 +301,7 @@ test_expect_success \
"rm -f .git/index LL &&
cp .orig-A/LL LL &&
git update-index --add LL &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -294,7 +310,7 @@ test_expect_success \
cp .orig-A/LL LL &&
git update-index --add LL &&
echo extra >>LL &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -303,7 +319,7 @@ test_expect_success \
cp .orig-A/LL LL &&
echo extra >>LL &&
git update-index --add LL &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -311,7 +327,7 @@ test_expect_success \
rm -f .git/index DD &&
echo DD >DD &&
git update-index --add DD &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -319,7 +335,7 @@ test_expect_success \
rm -f .git/index DM &&
cp .orig-B/DM DM &&
git update-index --add DM &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -327,7 +343,7 @@ test_expect_success \
rm -f .git/index DN &&
cp .orig-B/DN DN &&
git update-index --add DN &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -335,7 +351,7 @@ test_expect_success \
"rm -f .git/index MD &&
cp .orig-A/MD MD &&
git update-index --add MD &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -344,7 +360,7 @@ test_expect_success \
cp .orig-A/MD MD &&
git update-index --add MD &&
echo extra >>MD &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -353,7 +369,7 @@ test_expect_success \
cp .orig-A/MD MD &&
echo extra >>MD &&
git update-index --add MD &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -361,7 +377,7 @@ test_expect_success \
"rm -f .git/index ND &&
cp .orig-A/ND ND &&
git update-index --add ND &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -370,7 +386,7 @@ test_expect_success \
cp .orig-A/ND ND &&
git update-index --add ND &&
echo extra >>ND &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -379,7 +395,7 @@ test_expect_success \
cp .orig-A/ND ND &&
echo extra >>ND &&
git update-index --add ND &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -387,7 +403,7 @@ test_expect_success \
"rm -f .git/index MM &&
cp .orig-A/MM MM &&
git update-index --add MM &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -396,7 +412,7 @@ test_expect_success \
cp .orig-A/MM MM &&
git update-index --add MM &&
echo extra >>MM &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -405,7 +421,7 @@ test_expect_success \
cp .orig-A/MM MM &&
echo extra >>MM &&
git update-index --add MM &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -413,7 +429,7 @@ test_expect_success \
"rm -f .git/index SS &&
cp .orig-A/SS SS &&
git update-index --add SS &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -422,7 +438,7 @@ test_expect_success \
cp .orig-A/SS SS &&
git update-index --add SS &&
echo extra >>SS &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -431,7 +447,7 @@ test_expect_success \
cp .orig-A/SS SS &&
echo extra >>SS &&
git update-index --add SS &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -439,7 +455,7 @@ test_expect_success \
"rm -f .git/index MN &&
cp .orig-A/MN MN &&
git update-index --add MN &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -448,7 +464,7 @@ test_expect_success \
cp .orig-A/MN MN &&
git update-index --add MN &&
echo extra >>MN &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -456,7 +472,7 @@ test_expect_success \
"rm -f .git/index NM &&
cp .orig-A/NM NM &&
git update-index --add NM &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -465,7 +481,7 @@ test_expect_success \
cp .orig-B/NM NM &&
git update-index --add NM &&
echo extra >>NM &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -474,7 +490,7 @@ test_expect_success \
cp .orig-A/NM NM &&
git update-index --add NM &&
echo extra >>NM &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -483,7 +499,7 @@ test_expect_success \
cp .orig-A/NM NM &&
echo extra >>NM &&
git update-index --add NM &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
test_expect_success \
@@ -491,7 +507,7 @@ test_expect_success \
"rm -f .git/index NN &&
cp .orig-A/NN NN &&
git update-index --add NN &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -500,7 +516,7 @@ test_expect_success \
cp .orig-A/NN NN &&
git update-index --add NN &&
echo extra >>NN &&
- git read-tree -m $tree_O $tree_A $tree_B &&
+ read_tree_must_succeed -m $tree_O $tree_A $tree_B &&
check_result"
test_expect_success \
@@ -509,7 +525,7 @@ test_expect_success \
cp .orig-A/NN NN &&
echo extra >>NN &&
git update-index --add NN &&
- test_must_fail git read-tree -m $tree_O $tree_A $tree_B
+ read_tree_must_fail -m $tree_O $tree_A $tree_B
"
# #16
@@ -522,7 +538,7 @@ test_expect_success \
echo E16 >F16 &&
git update-index F16 &&
tree1=`git write-tree` &&
- git read-tree -m $tree0 $tree1 $tree1 $tree0 &&
+ read_tree_must_succeed -m $tree0 $tree1 $tree1 $tree0 &&
git ls-files --stage'
test_done
diff --git a/t/t1001-read-tree-m-2way.sh b/t/t1001-read-tree-m-2way.sh
index 680d992..ebe7c4d 100755
--- a/t/t1001-read-tree-m-2way.sh
+++ b/t/t1001-read-tree-m-2way.sh
@@ -48,6 +48,14 @@ check_cache_at () {
esac
}
+read_tree_must_succeed () {
+ git ls-files -s >pre-dry-run &&
+ git read-tree -n "$@" &&
+ git ls-files -s >post-dry-run &&
+ test_cmp pre-dry-run post-dry-run &&
+ git read-tree "$@"
+}
+
cat >bozbar-old <<\EOF
This is a sample file used in two-way fast-forward merge
tests. Its second line ends with a magic word bozbar
@@ -94,7 +102,7 @@ echo '+100644 X 0 yomin' >expected
test_expect_success \
'4 - carry forward local addition.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
git update-index --add yomin &&
read_tree_twoway $treeH $treeM &&
@@ -106,7 +114,7 @@ test_expect_success \
test_expect_success \
'5 - carry forward local addition.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo yomin >yomin &&
git update-index --add yomin &&
@@ -120,7 +128,7 @@ test_expect_success \
test_expect_success \
'6 - local addition already has the same.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
git update-index --add frotz &&
read_tree_twoway $treeH $treeM &&
@@ -131,7 +139,7 @@ test_expect_success \
test_expect_success \
'7 - local addition already has the same.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo frotz >frotz &&
git update-index --add frotz &&
@@ -144,7 +152,7 @@ test_expect_success \
test_expect_success \
'8 - conflicting addition.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo frotz frotz >frotz &&
git update-index --add frotz &&
@@ -153,7 +161,7 @@ test_expect_success \
test_expect_success \
'9 - conflicting addition.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo frotz frotz >frotz &&
git update-index --add frotz &&
@@ -163,7 +171,7 @@ test_expect_success \
test_expect_success \
'10 - path removed.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo rezrov >rezrov &&
git update-index --add rezrov &&
@@ -174,7 +182,7 @@ test_expect_success \
test_expect_success \
'11 - dirty path removed.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo rezrov >rezrov &&
git update-index --add rezrov &&
@@ -184,7 +192,7 @@ test_expect_success \
test_expect_success \
'12 - unmatching local changes being removed.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo rezrov rezrov >rezrov &&
git update-index --add rezrov &&
@@ -193,7 +201,7 @@ test_expect_success \
test_expect_success \
'13 - unmatching local changes being removed.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo rezrov rezrov >rezrov &&
git update-index --add rezrov &&
@@ -208,7 +216,7 @@ EOF
test_expect_success \
'14 - unchanged in two heads.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo nitfol nitfol >nitfol &&
git update-index --add nitfol &&
@@ -221,7 +229,7 @@ test_expect_success \
test_expect_success \
'15 - unchanged in two heads.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo nitfol nitfol >nitfol &&
git update-index --add nitfol &&
@@ -235,7 +243,7 @@ test_expect_success \
test_expect_success \
'16 - conflicting local change.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo bozbar bozbar >bozbar &&
git update-index --add bozbar &&
@@ -244,7 +252,7 @@ test_expect_success \
test_expect_success \
'17 - conflicting local change.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
echo bozbar bozbar >bozbar &&
git update-index --add bozbar &&
@@ -254,7 +262,7 @@ test_expect_success \
test_expect_success \
'18 - local change already having a good result.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
cat bozbar-new >bozbar &&
git update-index --add bozbar &&
@@ -266,7 +274,7 @@ test_expect_success \
test_expect_success \
'19 - local change already having a good result, further modified.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
cat bozbar-new >bozbar &&
git update-index --add bozbar &&
@@ -279,7 +287,7 @@ test_expect_success \
test_expect_success \
'20 - no local change, use new tree.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
cat bozbar-old >bozbar &&
git update-index --add bozbar &&
@@ -291,7 +299,7 @@ test_expect_success \
test_expect_success \
'21 - no local change, dirty cache.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
cat bozbar-old >bozbar &&
git update-index --add bozbar &&
@@ -302,7 +310,7 @@ test_expect_success \
test_expect_success \
'22 - local change cache updated.' \
'rm -f .git/index &&
- git read-tree $treeH &&
+ read_tree_must_succeed $treeH &&
git checkout-index -u -f -q -a &&
sed -e "s/such as/SUCH AS/" bozbar-old >bozbar &&
git update-index --add bozbar &&
@@ -401,7 +409,7 @@ test_expect_success '-m references the correct modified tree' '
echo a >file-a &&
git add file-a &&
git ls-tree $(git write-tree) file-a >expect &&
- git read-tree -m HEAD initial-mod &&
+ read_tree_must_succeed -m HEAD initial-mod &&
git ls-tree $(git write-tree) file-a >actual &&
test_cmp expect actual
'
diff --git a/t/t1002-read-tree-m-u-2way.sh b/t/t1002-read-tree-m-u-2way.sh
index a4a17e0..ad9a4e8 100755
--- a/t/t1002-read-tree-m-u-2way.sh
+++ b/t/t1002-read-tree-m-u-2way.sh
@@ -341,4 +341,8 @@ test_expect_success \
test_cmp DFDF.out DFDFcheck.out &&
check_cache_at DF/DF clean'
+test_expect_success \
+ '-u is not allowed with -n' \
+ 'test_must_fail git read-tree -n -u -m $treeDF $treeDFDF'
+
test_done
--
1.7.5.1.218.g2da34
--
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