t/pack-refs-tests: use test_path_is_missing

The pack-refs tests previously used raw 'test -f' and 'test -e' checks
with negation. Update them to use Git's standard helper function
test_path_is_missing for consistency and clearer failure reporting.

As suggested in review, replaced the negated 'test_path_exists' with
test_path_is_missing to better reflect the expected absence of paths.

Signed-off-by: Ritesh Singh Jadoun <riteshjd75@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: ritesh-jd

t/pack-refs-tests.sh

@@ -61,13 +61,13 @@ test_expect_success 'see if a branch still exists after git ${pack_refs} --prune
 test_expect_success 'see if git ${pack_refs} --prune remove ref files' '
 	git branch f &&
 	git ${pack_refs} --all --prune &&
-	! test -f .git/refs/heads/f
+	test_path_is_missing .git/refs/heads/f
 '
 
 test_expect_success 'see if git ${pack_refs} --prune removes empty dirs' '
 	git branch r/s/t &&
 	git ${pack_refs} --all --prune &&
-	! test -e .git/refs/heads/r
+	test_path_is_missing .git/refs/heads/r
 '
 
 test_expect_success 'git branch g should work when git branch g/h has been deleted' '
@@ -111,43 +111,43 @@ test_expect_success 'test excluded refs are not packed' '
 	git branch dont_pack2 &&
 	git branch pack_this &&
 	git ${pack_refs} --all --exclude "refs/heads/dont_pack*" &&
-	test -f .git/refs/heads/dont_pack1 &&
-	test -f .git/refs/heads/dont_pack2 &&
-	! test -f .git/refs/heads/pack_this'
+	test_path_is_file .git/refs/heads/dont_pack1 &&
+	test_path_is_file .git/refs/heads/dont_pack2 &&
+	test_path_is_missing .git/refs/heads/pack_this'
 
 test_expect_success 'test --no-exclude refs clears excluded refs' '
 	git branch dont_pack3 &&
 	git branch dont_pack4 &&
 	git ${pack_refs} --all --exclude "refs/heads/dont_pack*" --no-exclude &&
-	! test -f .git/refs/heads/dont_pack3 &&
-	! test -f .git/refs/heads/dont_pack4'
+	test_path_is_missing .git/refs/heads/dont_pack3 &&
+	test_path_is_missing .git/refs/heads/dont_pack4'
 
 test_expect_success 'test only included refs are packed' '
 	git branch pack_this1 &&
 	git branch pack_this2 &&
 	git tag dont_pack5 &&
 	git ${pack_refs} --include "refs/heads/pack_this*" &&
-	test -f .git/refs/tags/dont_pack5 &&
-	! test -f .git/refs/heads/pack_this1 &&
-	! test -f .git/refs/heads/pack_this2'
+	test_path_is_file .git/refs/tags/dont_pack5 &&
+	test_path_is_missing .git/refs/heads/pack_this1 &&
+	test_path_is_missing .git/refs/heads/pack_this2'
 
 test_expect_success 'test --no-include refs clears included refs' '
 	git branch pack1 &&
 	git branch pack2 &&
 	git ${pack_refs} --include "refs/heads/pack*" --no-include &&
-	test -f .git/refs/heads/pack1 &&
-	test -f .git/refs/heads/pack2'
+	test_path_is_file .git/refs/heads/pack1 &&
+	test_path_is_file .git/refs/heads/pack2'
 
 test_expect_success 'test --exclude takes precedence over --include' '
 	git branch dont_pack5 &&
 	git ${pack_refs} --include "refs/heads/pack*" --exclude "refs/heads/pack*" &&
-	test -f .git/refs/heads/dont_pack5'
+	test_path_is_file .git/refs/heads/dont_pack5'
 
 test_expect_success 'see if up-to-date packed refs are preserved' '
 	git branch q &&
 	git ${pack_refs} --all --prune &&
 	git update-ref refs/heads/q refs/heads/q &&
-	! test -f .git/refs/heads/q
+	test_path_is_missing .git/refs/heads/q
 '
 
 test_expect_success 'pack, prune and repack' '