Merge branch 'mb/t7110-use-test-path-helper' into next

Test modernization.

* mb/t7110-use-test-path-helper:
  t7110: replace `test -f` with `test_path_is_*` helpers

Author: gitster

t/t7110-reset-merge.sh

@@ -270,22 +270,22 @@ test_expect_success '--merge is ok with added/deleted merge' '
 	git reset --hard third &&
 	rm -f file2 &&
 	test_must_fail git merge branch3 &&
-	! test -f file2 &&
-	test -f file3 &&
+	test_path_is_missing file2 &&
+	test_path_is_file file3 &&
 	git diff --exit-code file3 &&
 	git diff --exit-code branch3 file3 &&
 	git reset --merge HEAD &&
-	! test -f file3 &&
-	! test -f file2 &&
+	test_path_is_missing file3 &&
+	test_path_is_missing file2 &&
 	git diff --exit-code --cached
 '
 
 test_expect_success '--keep fails with added/deleted merge' '
 	git reset --hard third &&
 	rm -f file2 &&
 	test_must_fail git merge branch3 &&
-	! test -f file2 &&
-	test -f file3 &&
+	test_path_is_missing file2 &&
+	test_path_is_file file3 &&
 	git diff --exit-code file3 &&
 	git diff --exit-code branch3 file3 &&
 	test_must_fail git reset --keep HEAD 2>err.log &&