t7603: replace test -f by test_path_is_file

`test_path_is_file` provides a better output when asserting whether a
file exists. Replace the occurrences of `test -f` in t7603 with it,
facilitating the trace of possible test failures.

Signed-off-by: Lucas Oshiro <lucasseikioshiro@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7603-merge-reduce-heads.sh b/t/t7603-merge-reduce-heads.sh
index 4887ca705b330e8cbf6f25595cbcadfdfd67f9f2..1f8c3b7ccbe6b101fb1c879948f8ba419a4ef1c3 100755 (executable)
--- a/t/t7603-merge-reduce-heads.sh
+++ b/t/t7603-merge-reduce-heads.sh
@@ -52,12 +52,12 @@ test_expect_success 'merge c1 with c2, c3, c4, c5' '
        test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
        test "$(git rev-parse c5)" = "$(git rev-parse HEAD^4)" &&
        git diff --exit-code &&
-       test -f c0.c &&
-       test -f c1.c &&
-       test -f c2.c &&
-       test -f c3.c &&
-       test -f c4.c &&
-       test -f c5.c &&
+       test_path_is_file c0.c &&
+       test_path_is_file c1.c &&
+       test_path_is_file c2.c &&
+       test_path_is_file c3.c &&
+       test_path_is_file c4.c &&
+       test_path_is_file c5.c &&
        git show --format=%s -s >actual &&
        ! grep c1 actual &&
        grep c2 actual &&
@@ -75,12 +75,12 @@ test_expect_success 'pull c2, c3, c4, c5 into c1' '
        test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
        test "$(git rev-parse c5)" = "$(git rev-parse HEAD^4)" &&
        git diff --exit-code &&
-       test -f c0.c &&
-       test -f c1.c &&
-       test -f c2.c &&
-       test -f c3.c &&
-       test -f c4.c &&
-       test -f c5.c &&
+       test_path_is_file c0.c &&
+       test_path_is_file c1.c &&
+       test_path_is_file c2.c &&
+       test_path_is_file c3.c &&
+       test_path_is_file c4.c &&
+       test_path_is_file c5.c &&
        git show --format=%s -s >actual &&
        ! grep c1 actual &&
        grep c2 actual &&