tests: remove some direct access to .git/logs

Alternate refs backends might store reflogs somewhere other than
.git/logs.  Change most test code that directly accesses .git/logs to
instead use git reflog commands.

There are still a few tests which need direct access to reflogs: to
check reflog permissions, to manually create reflogs from scratch, to
save/restore reflogs, to check the format of raw reflog data, and to
remove not just reflog contents, but the reflogs themselves. All cases
which don't need direct access have been modified.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1400-update-ref.sh

@@ -155,12 +155,11 @@ test_expect_success "(not) changed .git/$m" "
 '
 rm -f .git/$m
 
-: a repository with working tree always has reflog these days...
-: >.git/logs/refs/heads/master
+rm -f .git/logs/refs/heads/master
 test_expect_success \
 	"create $m (logged by touch)" \
 	'GIT_COMMITTER_DATE="2005-05-26 23:30" \
-	 git update-ref HEAD '"$A"' -m "Initial Creation" &&
+	 git update-ref --create-reflog HEAD '"$A"' -m "Initial Creation" &&
 	 test '"$A"' = $(cat .git/'"$m"')'
 test_expect_success \
 	"update $m (logged by touch)" \

t/t1410-reflog.sh

@@ -100,7 +100,8 @@ test_expect_success setup '
 
 	check_fsck &&
 
-	test_line_count = 4 .git/logs/refs/heads/master
+	git reflog refs/heads/master >output &&
+	test_line_count = 4 output
 '
 
 test_expect_success rewind '
@@ -116,7 +117,8 @@ test_expect_success rewind '
 
 	check_have A B C D E F G H I J K L &&
 
-	test_line_count = 5 .git/logs/refs/heads/master
+	git reflog refs/heads/master >output &&
+	test_line_count = 5 output
 '
 
 test_expect_success 'corrupt and check' '
@@ -134,7 +136,8 @@ test_expect_success 'reflog expire --dry-run should not touch reflog' '
 		--stale-fix \
 		--all &&
 
-	test_line_count = 5 .git/logs/refs/heads/master &&
+	git reflog refs/heads/master >output &&
+	test_line_count = 5 output &&
 
 	check_fsck "missing blob $F"
 '
@@ -147,7 +150,8 @@ test_expect_success 'reflog expire' '
 		--stale-fix \
 		--all &&
 
-	test_line_count = 2 .git/logs/refs/heads/master &&
+	git reflog refs/heads/master >output &&
+	test_line_count = 2 output &&
 
 	check_fsck "dangling commit $K"
 '
@@ -213,7 +217,8 @@ test_expect_success 'delete' '
 test_expect_success 'rewind2' '
 
 	test_tick && git reset --hard HEAD~2 &&
-	test_line_count = 4 .git/logs/refs/heads/master
+	git reflog refs/heads/master >output &&
+	test_line_count = 4 output
 '
 
 test_expect_success '--expire=never' '
@@ -222,23 +227,26 @@ test_expect_success '--expire=never' '
 		--expire=never \
 		--expire-unreachable=never \
 		--all &&
-	test_line_count = 4 .git/logs/refs/heads/master
+	git reflog refs/heads/master >output &&
+	test_line_count = 4 output
 '
 
 test_expect_success 'gc.reflogexpire=never' '
 
 	git config gc.reflogexpire never &&
 	git config gc.reflogexpireunreachable never &&
 	git reflog expire --verbose --all &&
-	test_line_count = 4 .git/logs/refs/heads/master
+	git reflog refs/heads/master >output &&
+	test_line_count = 4 output
 '
 
 test_expect_success 'gc.reflogexpire=false' '
 
 	git config gc.reflogexpire false &&
 	git config gc.reflogexpireunreachable false &&
 	git reflog expire --verbose --all &&
-	test_line_count = 4 .git/logs/refs/heads/master &&
+	git reflog refs/heads/master >output &&
+	test_line_count = 4 output &&
 
 	git config --unset gc.reflogexpire &&
 	git config --unset gc.reflogexpireunreachable

t/t1411-reflog-show.sh

@@ -138,7 +138,7 @@ test_expect_success '--date magic does not override explicit @{0} syntax' '
 : >expect
 test_expect_success 'empty reflog file' '
 	git branch empty &&
-	: >.git/logs/refs/heads/empty &&
+	git reflog expire --expire=all refs/heads/empty &&
 
 	git log -g empty >actual &&
 	test_cmp expect actual

t/t1503-rev-parse-verify.sh

@@ -85,25 +85,22 @@ test_expect_success 'fails silently when using -q' '
 
 test_expect_success 'fails silently when using -q with deleted reflogs' '
 	ref=$(git rev-parse HEAD) &&
-	: >.git/logs/refs/test &&
-	git update-ref -m "message for refs/test" refs/test "$ref" &&
+	git update-ref --create-reflog -m "message for refs/test" refs/test "$ref" &&
 	git reflog delete --updateref --rewrite refs/test@{0} &&
 	test_must_fail git rev-parse -q --verify refs/test@{0} >error 2>&1 &&
 	test_must_be_empty error
 '
 
 test_expect_success 'fails silently when using -q with not enough reflogs' '
 	ref=$(git rev-parse HEAD) &&
-	: >.git/logs/refs/test2 &&
-	git update-ref -m "message for refs/test2" refs/test2 "$ref" &&
+	git update-ref --create-reflog -m "message for refs/test2" refs/test2 "$ref" &&
 	test_must_fail git rev-parse -q --verify refs/test2@{999} >error 2>&1 &&
 	test_must_be_empty error
 '
 
 test_expect_success 'succeeds silently with -q and reflogs that do not go far back enough in time' '
 	ref=$(git rev-parse HEAD) &&
-	: >.git/logs/refs/test3 &&
-	git update-ref -m "message for refs/test3" refs/test3 "$ref" &&
+	git update-ref --create-reflog -m "message for refs/test3" refs/test3 "$ref" &&
 	git rev-parse -q --verify refs/test3@{1.year.ago} >actual 2>error &&
 	test_must_be_empty error &&
 	echo "$ref" >expect &&

t/t3200-branch.sh

@@ -59,7 +59,7 @@ test_expect_success 'git branch -l d/e/f should create a branch and a log' '
 test_expect_success 'git branch -d d/e/f should delete a branch and a log' '
 	git branch -d d/e/f &&
 	test_path_is_missing .git/refs/heads/d/e/f &&
-	test_path_is_missing .git/logs/refs/heads/d/e/f
+	test_must_fail git reflog exists refs/heads/d/e/f
 '
 
 test_expect_success 'git branch j/k should work after branch j has been deleted' '
@@ -82,13 +82,13 @@ test_expect_success 'git branch -m dumps usage' '
 test_expect_success 'git branch -m m m/m should work' '
 	git branch -l m &&
 	git branch -m m m/m &&
-	test_path_is_file .git/logs/refs/heads/m/m
+	git reflog exists refs/heads/m/m
 '
 
 test_expect_success 'git branch -m n/n n should work' '
 	git branch -l n/n &&
 	git branch -m n/n n &&
-	test_path_is_file .git/logs/refs/heads/n
+	git reflog exists refs/heads/n
 '
 
 test_expect_success 'git branch -m o/o o should fail when o/p exists' '
@@ -267,12 +267,12 @@ git config branch.s/s.dummy Hello
 
 test_expect_success 'git branch -m s/s s should work when s/t is deleted' '
 	git branch -l s/s &&
-	test_path_is_file .git/logs/refs/heads/s/s &&
+	git reflog exists refs/heads/s/s &&
 	git branch -l s/t &&
-	test_path_is_file .git/logs/refs/heads/s/t &&
+	git reflog exists refs/heads/s/t &&
 	git branch -d s/t &&
 	git branch -m s/s s &&
-	test_path_is_file .git/logs/refs/heads/s
+	git reflog exists refs/heads/s
 '
 
 test_expect_success 'config information was renamed, too' '

t/t3210-pack-refs.sh

@@ -169,7 +169,7 @@ test_expect_success 'create packed foo/bar/baz branch' '
 	git branch foo/bar/baz &&
 	git pack-refs --all --prune &&
 	test_path_is_missing .git/refs/heads/foo/bar/baz &&
-	test_path_is_missing .git/logs/refs/heads/foo/bar/baz
+	test_must_fail git reflog exists refs/heads/foo/bar/baz
 '
 
 test_expect_success 'notice d/f conflict with existing directory' '

t/t3404-rebase-interactive.sh

@@ -961,13 +961,13 @@ test_expect_success 'rebase -i produces readable reflog' '
 	set_fake_editor &&
 	git rebase -i --onto I F branch-reflog-test &&
 	cat >expect <<-\EOF &&
-	rebase -i (start): checkout I
-	rebase -i (pick): G
-	rebase -i (pick): H
 	rebase -i (finish): returning to refs/heads/branch-reflog-test
+	rebase -i (pick): H
+	rebase -i (pick): G
+	rebase -i (start): checkout I
 	EOF
-	tail -n 4 .git/logs/HEAD |
-	sed -e "s/.*	//" >actual &&
+	git reflog -n4 HEAD |
+	sed "s/[^:]*: //" >actual &&
 	test_cmp expect actual
 '
 

t/t3903-stash.sh

@@ -672,7 +672,7 @@ test_expect_success 'store updates stash ref and reflog' '
 	! grep quux bazzy &&
 	git stash store -m quuxery $STASH_ID &&
 	test $(cat .git/refs/stash) = $STASH_ID &&
-	grep $STASH_ID .git/logs/refs/stash &&
+	git reflog --format=%H stash| grep $STASH_ID &&
 	git stash pop &&
 	grep quux bazzy
 '

t/t5312-prune-corruption.sh

@@ -12,7 +12,7 @@ delete objects that cannot be recovered.
 
 test_expect_success 'disable reflogs' '
 	git config core.logallrefupdates false &&
-	rm -rf .git/logs
+	git reflog expire --expire=all --all
 '
 
 test_expect_success 'create history reachable only from a bogus-named ref' '

t/t6501-freshen-objects.sh

@@ -56,7 +56,7 @@ for repack in '' true; do
 
 	test_expect_success "disable reflogs ($title)" '
 		git config core.logallrefupdates false &&
-		rm -rf .git/logs
+		git reflog expire --expire=all --all
 	'
 
 	test_expect_success "setup basic history ($title)" '