+static void test_fdset_iterate(void) {
+ int fd = -1;
+ FDSet *fdset = NULL;
+ char name[] = "/tmp/test-fdset_iterate.XXXXXX";
+ Iterator i;
+ int c = 0;
+ int a;
+
+ fd = mkostemp_safe(name, O_RDWR|O_CLOEXEC);
+ assert_se(fd >= 0);
+
+ fdset = fdset_new();
+ assert_se(fdset);
+ assert_se(fdset_put(fdset, fd) >= 0);
+ assert_se(fdset_put(fdset, fd) >= 0);
+ assert_se(fdset_put(fdset, fd) >= 0);
+
+ FDSET_FOREACH(a, fdset, i) {
+ c++;
+ assert_se(a == fd);
+ }
+ assert_se(c == 1);
+
+ fdset_free(fdset);
+
+ unlink(name);
+}
+