+static void test_prefixes(void) {
+ static const char* values[] = { "/a/b/c", "/a/b", "/a", "", NULL};
+ unsigned i = 0;
+ char s[PATH_MAX];
+
+ PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
+ log_error("---%s---", s);
+ assert_se(streq(s, values[i++]));
+ }
+
+ assert_se(values[i] == NULL);
+
+ i = 0;
+ PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
+ assert_se(streq(s, values[i++]));
+
+ assert_se(values[i] == NULL);
+
+ PATH_FOREACH_PREFIX(s, "////")
+ assert_se(streq(s, ""));
+
+ PATH_FOREACH_PREFIX(s, "")
+ assert_not_reached("wut?");
+
+}
+