Merge branch 'js/test-ln-s-add' into maint

* js/test-ln-s-add:
  t4011: remove SYMLINKS prerequisite
  t6035: use test_ln_s_add to remove SYMLINKS prerequisite
  t3509, t4023, t4114: use test_ln_s_add to remove SYMLINKS prerequisite
  t3100: use test_ln_s_add to remove SYMLINKS prerequisite
  t3030: use test_ln_s_add to remove SYMLINKS prerequisite
  t0000: use test_ln_s_add to remove SYMLINKS prerequisite
  tests: use test_ln_s_add to remove SYMLINKS prerequisite (trivial cases)
  tests: introduce test_ln_s_add
  t3010: modernize style
  test-chmtime: Fix exit code on Windows

Author: gitster

t/README

@@ -595,6 +595,20 @@ library for your script to use.
 		test_cmp expected actual
 	'
 
+ - test_ln_s_add <path1> <path2>
+
+   This function helps systems whose filesystem does not support symbolic
+   links. Use it to add a symbolic link entry to the index when it is not
+   important that the file system entry is a symbolic link, i.e., instead
+   of the sequence
+
+	ln -s foo bar &&
+	git add bar
+
+   Sometimes it is possible to split a test in a part that does not need
+   the symbolic link in the file system and a part that does; then only
+   the latter part need be protected by a SYMLINKS prerequisite (see below).
+
 Prerequisites
 -------------
 

t/t0000-basic.sh

@@ -367,33 +367,14 @@ test_expect_success 'validate object ID of a known tree' '
 
 # Various types of objects
 
-# Some filesystems do not support symblic links; on such systems
-# some expected values are different
-if test_have_prereq SYMLINKS
-then
-	expectfilter=cat
-	expectedtree=087704a96baf1c2d1c869a8b084481e121c88b5b
-	expectedptree1=21ae8269cacbe57ae09138dcc3a2887f904d02b3
-	expectedptree2=3c5e5399f3a333eddecce7a9b9465b63f65f51e2
-else
-	expectfilter='grep -v sym'
-	expectedtree=8e18edf7d7edcf4371a3ac6ae5f07c2641db7c46
-	expectedptree1=cfb8591b2f65de8b8cc1020cd7d9e67e7793b325
-	expectedptree2=ce580448f0148b985a513b693fdf7d802cacb44f
-fi
-
-
 test_expect_success 'adding various types of objects with git update-index --add' '
 	mkdir path2 path3 path3/subp3 &&
 	paths="path0 path2/file2 path3/file3 path3/subp3/file3" &&
 	(
 		for p in $paths
 		do
 			echo "hello $p" >$p || exit 1
-			if test_have_prereq SYMLINKS
-			then
-				ln -s "hello $p" ${p}sym || exit 1
-			fi
+			test_ln_s_add "hello $p" ${p}sym || exit 1
 		done
 	) &&
 	find path* ! -type d -print | xargs git update-index --add
@@ -405,7 +386,7 @@ test_expect_success 'showing stage with git ls-files --stage' '
 '
 
 test_expect_success 'validate git ls-files output for a known tree' '
-	$expectfilter >expected <<-\EOF &&
+	cat >expected <<-\EOF &&
 	100644 f87290f8eb2cbbea7857214459a0739927eab154 0	path0
 	120000 15a98433ae33114b085f3eb3bb03b832b3180a01 0	path0sym
 	100644 3feff949ed00a62d9f7af97c15cd8a30595e7ac7 0	path2/file2
@@ -423,14 +404,14 @@ test_expect_success 'writing tree out with git write-tree' '
 '
 
 test_expect_success 'validate object ID for a known tree' '
-	test "$tree" = "$expectedtree"
+	test "$tree" = 087704a96baf1c2d1c869a8b084481e121c88b5b
 '
 
 test_expect_success 'showing tree with git ls-tree' '
     git ls-tree $tree >current
 '
 
-test_expect_success SYMLINKS 'git ls-tree output for a known tree' '
+test_expect_success 'git ls-tree output for a known tree' '
 	cat >expected <<-\EOF &&
 	100644 blob f87290f8eb2cbbea7857214459a0739927eab154	path0
 	120000 blob 15a98433ae33114b085f3eb3bb03b832b3180a01	path0sym
@@ -447,7 +428,7 @@ test_expect_success 'showing tree with git ls-tree -r' '
 '
 
 test_expect_success 'git ls-tree -r output for a known tree' '
-	$expectfilter >expected <<-\EOF &&
+	cat >expected <<-\EOF &&
 	100644 blob f87290f8eb2cbbea7857214459a0739927eab154	path0
 	120000 blob 15a98433ae33114b085f3eb3bb03b832b3180a01	path0sym
 	100644 blob 3feff949ed00a62d9f7af97c15cd8a30595e7ac7	path2/file2
@@ -465,7 +446,7 @@ test_expect_success 'showing tree with git ls-tree -r -t' '
 	git ls-tree -r -t $tree >current
 '
 
-test_expect_success SYMLINKS 'git ls-tree -r output for a known tree' '
+test_expect_success 'git ls-tree -r output for a known tree' '
 	cat >expected <<-\EOF &&
 	100644 blob f87290f8eb2cbbea7857214459a0739927eab154	path0
 	120000 blob 15a98433ae33114b085f3eb3bb03b832b3180a01	path0sym
@@ -487,15 +468,15 @@ test_expect_success 'writing partial tree out with git write-tree --prefix' '
 '
 
 test_expect_success 'validate object ID for a known tree' '
-	test "$ptree" = "$expectedptree1"
+	test "$ptree" = 21ae8269cacbe57ae09138dcc3a2887f904d02b3
 '
 
 test_expect_success 'writing partial tree out with git write-tree --prefix' '
 	ptree=$(git write-tree --prefix=path3/subp3)
 '
 
 test_expect_success 'validate object ID for a known tree' '
-	test "$ptree" = "$expectedptree2"
+	test "$ptree" = 3c5e5399f3a333eddecce7a9b9465b63f65f51e2
 '
 
 test_expect_success 'put invalid objects into the index' '
@@ -529,7 +510,7 @@ test_expect_success 'git read-tree followed by write-tree should be idempotent'
 '
 
 test_expect_success 'validate git diff-files output for a know cache/work tree state' '
-	$expectfilter >expected <<\EOF &&
+	cat >expected <<\EOF &&
 :100644 100644 f87290f8eb2cbbea7857214459a0739927eab154 0000000000000000000000000000000000000000 M	path0
 :120000 120000 15a98433ae33114b085f3eb3bb03b832b3180a01 0000000000000000000000000000000000000000 M	path0sym
 :100644 100644 3feff949ed00a62d9f7af97c15cd8a30595e7ac7 0000000000000000000000000000000000000000 M	path2/file2
@@ -553,7 +534,7 @@ test_expect_success 'no diff after checkout and git update-index --refresh' '
 '
 
 ################################################################
-P=$expectedtree
+P=087704a96baf1c2d1c869a8b084481e121c88b5b
 
 test_expect_success 'git commit-tree records the correct tree in a commit' '
 	commit0=$(echo NO | git commit-tree $P) &&

t/t1004-read-tree-m-u-wf.sh

@@ -158,7 +158,7 @@ test_expect_success '3-way not overwriting local changes (their side)' '
 
 '
 
-test_expect_success SYMLINKS 'funny symlink in work tree' '
+test_expect_success 'funny symlink in work tree' '
 
 	git reset --hard &&
 	git checkout -b sym-b side-b &&
@@ -170,15 +170,14 @@ test_expect_success SYMLINKS 'funny symlink in work tree' '
 	rm -fr a &&
 	git checkout -b sym-a side-a &&
 	mkdir -p a &&
-	ln -s ../b a/b &&
-	git add a/b &&
+	test_ln_s_add ../b 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' '
+test_expect_success SANITY 'funny symlink in work tree, un-unlink-able' '
 
 	rm -fr a b &&
 	git reset --hard &&

t/t2001-checkout-cache-clash.sh

@@ -59,10 +59,9 @@ test_expect_success \
     'git read-tree -m $tree1 && git checkout-index -f -a'
 test_debug 'show_files $tree1'
 
-test_expect_success SYMLINKS \
-    'git update-index --add a symlink.' \
-    'ln -s path0 path1 &&
-     git update-index --add path1'
+test_expect_success \
+    'add a symlink' \
+    'test_ln_s_add path0 path1'
 test_expect_success \
     'writing tree out with git write-tree' \
     'tree3=$(git write-tree)'

t/t2004-checkout-cache-temp.sh

@@ -194,11 +194,10 @@ test_expect_success \
  test $(cat ../$s1) = tree1asubdir/path5)
 )'
 
-test_expect_success SYMLINKS \
+test_expect_success \
 'checkout --temp symlink' '
 rm -f path* .merge_* out .git/index &&
-ln -s b a &&
-git update-index --add a &&
+test_ln_s_add b a &&
 t4=$(git write-tree) &&
 rm -f .git/index &&
 git read-tree $t4 &&

t/t2007-checkout-symlink.sh

@@ -6,7 +6,7 @@ test_description='git checkout to switch between branches with symlink<->dir'
 
 . ./test-lib.sh
 
-test_expect_success SYMLINKS setup '
+test_expect_success setup '
 
 	mkdir frotz &&
 	echo hello >frotz/filfre &&
@@ -25,25 +25,25 @@ test_expect_success SYMLINKS setup '
 
 	git rm --cached frotz/filfre &&
 	mv frotz xyzzy &&
-	ln -s xyzzy frotz &&
-	git add xyzzy/filfre frotz &&
+	test_ln_s_add xyzzy frotz &&
+	git add xyzzy/filfre &&
 	test_tick &&
 	git commit -m "side moves frotz/ to xyzzy/ and adds frotz->xyzzy/"
 
 '
 
-test_expect_success SYMLINKS 'switch from symlink to dir' '
+test_expect_success 'switch from symlink to dir' '
 
 	git checkout master
 
 '
 
-test_expect_success SYMLINKS 'Remove temporary directories & switch to master' '
+test_expect_success 'Remove temporary directories & switch to master' '
 	rm -fr frotz xyzzy nitfol &&
 	git checkout -f master
 '
 
-test_expect_success SYMLINKS 'switch from dir to symlink' '
+test_expect_success 'switch from dir to symlink' '
 
 	git checkout side
 

t/t2021-checkout-overwrite.sh

@@ -29,21 +29,25 @@ test_expect_success 'checkout commit with dir must not remove untracked a/b' '
 	test -f a/b
 '
 
-test_expect_success SYMLINKS 'create a commit where dir a/b changed to symlink' '
+test_expect_success 'create a commit where dir a/b changed to symlink' '
 
 	rm -rf a/b &&	# cleanup if previous test failed
 	git checkout -f -b symlink start &&
 	rm -rf a/b &&
-	ln -s foo a/b &&
 	git add -A &&
+	test_ln_s_add foo a/b &&
 	git commit -m "dir to symlink"
 '
 
-test_expect_success SYMLINKS 'checkout commit with dir must not remove untracked a/b' '
+test_expect_success 'checkout commit with dir must not remove untracked a/b' '
 
 	git rm --cached a/b &&
 	git commit -m "un-track the symlink" &&
-	test_must_fail git checkout start &&
+	test_must_fail git checkout start
+'
+
+test_expect_success SYMLINKS 'the symlink remained' '
+
 	test -h a/b
 '
 

t/t2200-add-update.sh

@@ -96,11 +96,10 @@ test_expect_success 'non-limited update in subdir leaves root alone' '
 	test_cmp expect actual
 '
 
-test_expect_success SYMLINKS 'replace a file with a symlink' '
+test_expect_success 'replace a file with a symlink' '
 
 	rm foo &&
-	ln -s top foo &&
-	git add -u -- foo
+	test_ln_s_add top foo
 
 '