t1050: replace test -f with test_path_is_file

Use test_path_is_file() instead of 'test -f' for better debugging
information.

Signed-off-by: Rasmus Jonsson <wasmus@zom.bi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1050-large.sh

@@ -53,7 +53,8 @@ test_expect_success 'add a large file or two' '
 	for p in .git/objects/pack/pack-*.pack
 	do
 		count=$(( $count + 1 ))
-		if test -f "$p" && idx=${p%.pack}.idx && test -f "$idx"
+		if test_path_is_file "$p" &&
+		   idx=${p%.pack}.idx && test_path_is_file "$idx"
 		then
 			continue
 		fi
@@ -65,7 +66,7 @@ test_expect_success 'add a large file or two' '
 	test $cnt = 2 &&
 	for l in .git/objects/??/??????????????????????????????????????
 	do
-		test -f "$l" || continue
+		test_path_is_file "$l" || continue
 		bad=t
 	done &&
 	test -z "$bad" &&
@@ -76,7 +77,8 @@ test_expect_success 'add a large file or two' '
 	for p in .git/objects/pack/pack-*.pack
 	do
 		count=$(( $count + 1 ))
-		if test -f "$p" && idx=${p%.pack}.idx && test -f "$idx"
+		if test_path_is_file "$p" &&
+		   idx=${p%.pack}.idx && test_path_is_file "$idx"
 		then
 			continue
 		fi
@@ -111,7 +113,7 @@ test_expect_success 'packsize limit' '
 		count=0 &&
 		for pi in .git/objects/pack/pack-*.idx
 		do
-			test -f "$pi" && count=$(( $count + 1 ))
+			test_path_is_file "$pi" && count=$(( $count + 1 ))
 		done &&
 		test $count = 2 &&