+static void test_in_set(void) {
+ assert_se(IN_SET(1, 1));
+ assert_se(IN_SET(1, 1, 2, 3, 4));
+ assert_se(IN_SET(2, 1, 2, 3, 4));
+ assert_se(IN_SET(3, 1, 2, 3, 4));
+ assert_se(IN_SET(4, 1, 2, 3, 4));
+ assert_se(!IN_SET(0, 1));
+ assert_se(!IN_SET(0, 1, 2, 3, 4));
+}
+
+static void test_log2i(void) {
+ assert_se(log2i(1) == 0);
+ assert_se(log2i(2) == 1);
+ assert_se(log2i(3) == 1);
+ assert_se(log2i(4) == 2);
+ assert_se(log2i(32) == 5);
+ assert_se(log2i(33) == 5);
+ assert_se(log2i(63) == 5);
+ assert_se(log2i(INT_MAX) == sizeof(int)*8-2);
+}
+
+#if 0 /// UNNEEDED by elogind
+static void test_raw_clone(void) {
+ pid_t parent, pid, pid2;
+
+ parent = getpid();
+ log_info("before clone: getpid()→"PID_FMT, parent);
+ assert_se(raw_getpid() == parent);
+
+ pid = raw_clone(0);
+ assert_se(pid >= 0);
+
+ pid2 = raw_getpid();
+ log_info("raw_clone: "PID_FMT" getpid()→"PID_FMT" raw_getpid()→"PID_FMT,
+ pid, getpid(), pid2);
+ if (pid == 0) {
+ assert_se(pid2 != parent);
+ _exit(EXIT_SUCCESS);
+ } else {
+ int status;
+
+ assert_se(pid2 == parent);
+ waitpid(pid, &status, __WCLONE);
+ assert_se(WIFEXITED(status) && WEXITSTATUS(status) == EXIT_SUCCESS);
+ }
+}
+#endif // 0
+
+static void test_physical_memory(void) {
+ uint64_t p;
+ char buf[FORMAT_BYTES_MAX];
+
+ p = physical_memory();
+ assert_se(p > 0);
+ assert_se(p < UINT64_MAX);
+ assert_se(p % page_size() == 0);
+
+ log_info("Memory: %s (%" PRIu64 ")", format_bytes(buf, sizeof(buf), p), p);
+}
+
+static void test_physical_memory_scale(void) {
+ uint64_t p;
+
+ p = physical_memory();
+
+ assert_se(physical_memory_scale(0, 100) == 0);
+ assert_se(physical_memory_scale(100, 100) == p);
+
+ log_info("Memory original: %" PRIu64, physical_memory());
+ log_info("Memory scaled by 50%%: %" PRIu64, physical_memory_scale(50, 100));
+ log_info("Memory divided by 2: %" PRIu64, physical_memory() / 2);
+ log_info("Page size: %zu", page_size());
+
+ /* There might be an uneven number of pages, hence permit these calculations to be half a page off... */
+ assert_se(page_size()/2 + physical_memory_scale(50, 100) - p/2 <= page_size());
+ assert_se(physical_memory_scale(200, 100) == p*2);
+
+ assert_se(physical_memory_scale(0, 1) == 0);
+ assert_se(physical_memory_scale(1, 1) == p);
+ assert_se(physical_memory_scale(2, 1) == p*2);
+
+ assert_se(physical_memory_scale(0, 2) == 0);
+
+ assert_se(page_size()/2 + physical_memory_scale(1, 2) - p/2 <= page_size());
+ assert_se(physical_memory_scale(2, 2) == p);
+ assert_se(physical_memory_scale(4, 2) == p*2);
+
+ assert_se(physical_memory_scale(0, UINT32_MAX) == 0);
+ assert_se(physical_memory_scale(UINT32_MAX, UINT32_MAX) == p);
+
+ /* overflow */
+ assert_se(physical_memory_scale(UINT64_MAX/4, UINT64_MAX) == UINT64_MAX);
+}
+
+static void test_system_tasks_max(void) {
+ uint64_t t;
+
+ t = system_tasks_max();
+ assert_se(t > 0);
+ assert_se(t < UINT64_MAX);
+
+ log_info("Max tasks: %" PRIu64, t);
+}
+
+static void test_system_tasks_max_scale(void) {
+ uint64_t t;
+
+ t = system_tasks_max();
+
+ assert_se(system_tasks_max_scale(0, 100) == 0);
+ assert_se(system_tasks_max_scale(100, 100) == t);
+
+ assert_se(system_tasks_max_scale(0, 1) == 0);
+ assert_se(system_tasks_max_scale(1, 1) == t);
+ assert_se(system_tasks_max_scale(2, 1) == 2*t);
+
+ assert_se(system_tasks_max_scale(0, 2) == 0);
+ assert_se(system_tasks_max_scale(1, 2) == t/2);
+ assert_se(system_tasks_max_scale(2, 2) == t);
+ assert_se(system_tasks_max_scale(3, 2) == (3*t)/2);
+ assert_se(system_tasks_max_scale(4, 2) == t*2);
+
+ assert_se(system_tasks_max_scale(0, UINT32_MAX) == 0);
+ assert_se(system_tasks_max_scale((UINT32_MAX-1)/2, UINT32_MAX-1) == t/2);
+ assert_se(system_tasks_max_scale(UINT32_MAX, UINT32_MAX) == t);
+
+ /* overflow */
+
+ assert_se(system_tasks_max_scale(UINT64_MAX/4, UINT64_MAX) == UINT64_MAX);