Merge branch 'cc/tests-without-assuming-ref-files-backend'

Quite a many tests assumed that newly created refs are made as
loose refs using the files backend, which have been updated to use
proper plumbing like rev-parse and update-ref, to avoid breakage
once we start using different ref backends.

* cc/tests-without-assuming-ref-files-backend:
  t990X: use '.git/objects' as 'deep inside .git' path
  t: make many tests depend less on the refs being files

t/lib-t6000.sh

@@ -4,11 +4,11 @@ mkdir -p .git/refs/tags
 >sed.script
-# Answer the sha1 has associated with the tag. The tag must exist in .git/refs/tags
+# Answer the sha1 has associated with the tag. The tag must exist under refs/tags
 tag () {
 	_tag=$1
-	test -f ".git/refs/tags/$_tag" || error "tag: \"$_tag\" does not exist"
-	cat ".git/refs/tags/$_tag"
+	git rev-parse --verify "refs/tags/$_tag" ||
+	error "tag: \"$_tag\" does not exist"
 }
 # Generate a commit using the text specified to make it unique and the tree

t/t1401-symbolic-ref.sh

@@ -65,7 +65,7 @@ reset_to_sane
 test_expect_success 'symbolic-ref fails to delete real ref' '
 	echo "fatal: Cannot delete refs/heads/foo, not a symbolic ref" >expect &&
 	test_must_fail git symbolic-ref -d refs/heads/foo >actual 2>&1 &&
-	test_path_is_file .git/refs/heads/foo &&
+	git rev-parse --verify refs/heads/foo &&
 	test_cmp expect actual
 '
 reset_to_sane

t/t3200-branch.sh

@@ -234,34 +234,34 @@ test_expect_success 'git branch -M master2 master2 should work when master is ch
 test_expect_success 'git branch -v -d t should work' '
 	git branch t &&
-	test_path_is_file .git/refs/heads/t &&
+	git rev-parse --verify refs/heads/t &&
 	git branch -v -d t &&
-	test_path_is_missing .git/refs/heads/t
+	test_must_fail git rev-parse --verify refs/heads/t
 '
 test_expect_success 'git branch -v -m t s should work' '
 	git branch t &&
-	test_path_is_file .git/refs/heads/t &&
+	git rev-parse --verify refs/heads/t &&
 	git branch -v -m t s &&
-	test_path_is_missing .git/refs/heads/t &&
-	test_path_is_file .git/refs/heads/s &&
+	test_must_fail git rev-parse --verify refs/heads/t &&
+	git rev-parse --verify refs/heads/s &&
 	git branch -d s
 '
 test_expect_success 'git branch -m -d t s should fail' '
 	git branch t &&
-	test_path_is_file .git/refs/heads/t &&
+	git rev-parse refs/heads/t &&
 	test_must_fail git branch -m -d t s &&
 	git branch -d t &&
-	test_path_is_missing .git/refs/heads/t
+	test_must_fail git rev-parse refs/heads/t
 '
 test_expect_success 'git branch --list -d t should fail' '
 	git branch t &&
-	test_path_is_file .git/refs/heads/t &&
+	git rev-parse refs/heads/t &&
 	test_must_fail git branch --list -d t &&
 	git branch -d t &&
-	test_path_is_missing .git/refs/heads/t
+	test_must_fail git rev-parse refs/heads/t
 '
 test_expect_success 'git branch --list -v with --abbrev' '

t/t3903-stash.sh

@@ -726,7 +726,7 @@ test_expect_success 'store updates stash ref and reflog' '
 	git reset --hard &&
 	! grep quux bazzy &&
 	git stash store -m quuxery $STASH_ID &&
-	test $(cat .git/refs/stash) = $STASH_ID &&
+	test $(git rev-parse stash) = $STASH_ID &&
 	git reflog --format=%H stash| grep $STASH_ID &&
 	git stash pop &&
 	grep quux bazzy

t/t5500-fetch-pack.sh

@@ -30,7 +30,7 @@ add () {
 	test_tick &&
 	commit=$(echo "$text" | git commit-tree $tree $parents) &&
 	eval "$name=$commit; export $name" &&
-	echo $commit > .git/refs/heads/$branch &&
+	git update-ref "refs/heads/$branch" "$commit" &&
 	eval ${branch}TIP=$commit
 }
@@ -45,10 +45,10 @@ pull_to_client () {
 			case "$heads" in
 			    *A*)
-				    echo $ATIP > .git/refs/heads/A;;
+				    git update-ref refs/heads/A "$ATIP";;
 			esac &&
 			case "$heads" in *B*)
-			    echo $BTIP > .git/refs/heads/B;;
+			    git update-ref refs/heads/B "$BTIP";;
 			esac &&
 			git symbolic-ref HEAD refs/heads/$(echo $heads \
 				| sed -e "s/^\(.\).*$/\1/") &&
@@ -92,8 +92,8 @@ test_expect_success 'setup' '
 		cur=$(($cur+1))
 	done &&
 	add B1 $A1 &&
-	echo $ATIP > .git/refs/heads/A &&
-	echo $BTIP > .git/refs/heads/B &&
+	git update-ref refs/heads/A "$ATIP" &&
+	git update-ref refs/heads/B "$BTIP" &&
 	git symbolic-ref HEAD refs/heads/B
 '

t/t5510-fetch.sh

@@ -63,7 +63,7 @@ test_expect_success "fetch test" '
 	git commit -a -m "updated by origin" &&
 	cd two &&
 	git fetch &&
-	test -f .git/refs/heads/one &&
+	git rev-parse --verify refs/heads/one &&
 	mine=$(git rev-parse refs/heads/one) &&
 	his=$(cd ../one && git rev-parse refs/heads/master) &&
 	test "z$mine" = "z$his"
@@ -73,8 +73,8 @@ test_expect_success "fetch test for-merge" '
 	cd "$D" &&
 	cd three &&
 	git fetch &&
-	test -f .git/refs/heads/two &&
-	test -f .git/refs/heads/one &&
+	git rev-parse --verify refs/heads/two &&
+	git rev-parse --verify refs/heads/one &&
 	master_in_two=$(cd ../two && git rev-parse master) &&
 	one_in_two=$(cd ../two && git rev-parse one) &&
 	{

t/t6010-merge-base.sh

@@ -34,7 +34,7 @@ doit () {
 	commit=$(echo $NAME | git commit-tree $T $PARENTS) &&
-	echo $commit >.git/refs/tags/$NAME &&
+	git update-ref "refs/tags/$NAME" "$commit" &&
 	echo $commit
 }

t/t7201-co.sh

@@ -65,7 +65,7 @@ test_expect_success setup '
 test_expect_success "checkout from non-existing branch" '
 	git checkout -b delete-me master &&
-	rm .git/refs/heads/delete-me &&
+	git update-ref -d --no-deref refs/heads/delete-me &&
 	test refs/heads/delete-me = "$(git symbolic-ref HEAD)" &&
 	git checkout master &&
 	test refs/heads/master = "$(git symbolic-ref HEAD)"

t/t9104-git-svn-follow-parent.sh

@@ -215,7 +215,8 @@ test_expect_success "multi-fetch continues to work" "
 	"
 test_expect_success "multi-fetch works off a 'clean' repository" '
-	rm -r "$GIT_DIR/svn" "$GIT_DIR/refs/remotes" "$GIT_DIR/logs" &&
+	rm -rf "$GIT_DIR/svn" "$GIT_DIR/refs/remotes" &&
+	git reflog expire --all --expire=all &&
 	mkdir "$GIT_DIR/svn" &&
 	git svn multi-fetch
 	'

t/t9902-completion.sh

@@ -181,7 +181,7 @@ test_expect_success '__git_find_repo_path - cwd is a .git directory' '
 test_expect_success '__git_find_repo_path - parent is a .git directory' '
 	echo "$ROOT/.git" >expected &&
 	(
-		cd .git/refs/heads &&
+		cd .git/objects &&
 		__git_find_repo_path &&
 		echo "$__git_repo_path" >"$actual"
 	) &&

t/t9903-bash-prompt.sh

@@ -148,7 +148,7 @@ test_expect_success 'prompt - inside .git directory' '
 test_expect_success 'prompt - deep inside .git directory' '
 	printf " (GIT_DIR!)" >expected &&
 	(
-		cd .git/refs/heads &&
+		cd .git/objects &&
 		__git_ps1 >"$actual"
 	) &&
 	test_cmp expected "$actual"