tests/xtimer_now32_overflow: simplify

tests/xtimer_now32_overflow/Makefile

@@ -1,6 +1,5 @@
 include ../Makefile.tests_common
 
-USEMODULE += fmt
 USEMODULE += xtimer
 
 DISABLE_MODULE += auto_init_xtimer

tests/xtimer_now32_overflow/main.c

@@ -1,91 +1,59 @@
 /*
- * Copyright (C) 2020 Freie Universität Berlin
+ * Copyright (C) 2020 Kaspar Schleiser <kaspar@schleiser.de>
  *
  * This file is subject to the terms and conditions of the GNU Lesser
  * General Public License v2.1. See the file LICENSE in the top level
  * directory for more details.
  */
 
 /**
+ * @ingroup     tests
  * @{
  *
  * @file
- * @author  Martine Lenders <m.lenders@fu-berlin.de>
+ * @brief       timer test application
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * @}
  */
 
 #include <stdio.h>
 
-#include "fmt.h"
-#include "kernel_defines.h"
-#include "msg.h"
-#include "test_utils/expect.h"
-#include "thread.h"
 #include "xtimer.h"
 
-#define MAIN_MSG_QUEUE_SIZE     (4U)
-#define TIMERS_NUMOF            (3U)
-
-msg_t _main_msg_queue[MAIN_MSG_QUEUE_SIZE];
-static const uint64_t _timers_offsets[TIMERS_NUMOF] = {
-    /* MUST ASCEND */
-    1 * US_PER_SEC,
-    2 * US_PER_SEC,
-    3 * US_PER_SEC,
-};
+static void _callback(void *arg)
+{
+    (void)arg;
+}
 
 int main(void)
 {
-    xtimer_t timers[TIMERS_NUMOF];
-    msg_t msgs[TIMERS_NUMOF];
-    uint64_t start;
+    xtimer_t t1 = { .callback=_callback };
+    xtimer_t t2 = { .callback=_callback };
 
-    expect(ARRAY_SIZE(_timers_offsets) == TIMERS_NUMOF);
-    msg_init_queue(_main_msg_queue, MAIN_MSG_QUEUE_SIZE);
-    /* ensure that xtimer_now64() is greater than UINT32_MAX */
-    _xtimer_current_time = (2LLU << 32U);
+    /* ensure that xtimer_now64() is greater than UINT32_MAX
+     * and the upper 32bit of xtimer_now64() equal 1 */
+    _xtimer_current_time = (1LLU << 32U);
     xtimer_init();
-    print_str("Setting ");
-    print_u32_dec(TIMERS_NUMOF);
-    print_str(" timers:\n");
-    for (unsigned i = 0; i < TIMERS_NUMOF; i++) {
-        msgs[i].content.value = i;
-        print_str(" #");
-        print_u32_dec(i);
-        print_str(" in ");
-        print_u64_dec(_timers_offsets[i]);
-        print_str(" usec\n");
+
+    /* set to 100s (far in the future) */
+    xtimer_set(&t1, 100000000LU);
+    xtimer_set(&t2, 100000000LU);
+
+    /* sleep 1 ms (uses a third xtimer internally).
+     * shooting this timer did set all following short timer's to have a
+     * long_start_time of 0.  The timer_callback main loop would correct the
+     * timer_list_head, but not the following.
+     */
+    xtimer_usleep(1000);
+
+    if (t2.long_start_time == 1) {
+        puts("[SUCCESS]");
     }
-    print_str("now=");
-    start = xtimer_now64().ticks64;
-    print_u64_dec(start);
-    print_str("\n");
-    expect(start > UINT32_MAX);
-    /* set timers after all were printed for better timing */
-    for (unsigned i = 0; i < TIMERS_NUMOF; i++) {
-        xtimer_set_msg64(&timers[i], _timers_offsets[i], &msgs[i],
-                         thread_getpid());
-        expect(timers[i].long_start_time > 0);
+    else {
+        puts("[FAILED]");
     }
-    while (1) {
-        msg_t msg;
 
-        msg_receive(&msg);
-        print_str("#");
-        print_u32_dec(msg.content.value);
-        print_str(":now=");
-        print_u64_dec((uint64_t)xtimer_now64().ticks64);
-        print_str("\n");
-        for (unsigned i = 0; i <= msg.content.value; i++) {
-            /* all fired timers expired */
-            expect(timers[i].long_start_time == 0);
-        }
-        for (unsigned i = (msg.content.value + 1); i <= TIMERS_NUMOF; i++) {
-            /* upper half of remaing_timers' start_time stays above 0 as it is
-             * based on xtimer_now64() during the timer's callback execution */
-            expect(timers[i].long_start_time > 0);
-        }
-    }
     return 0;
 }
-
-/** @} */

tests/xtimer_now32_overflow/tests/01-run.py

@@ -1,47 +1,17 @@
 #!/usr/bin/env python3
 
-# Copyright (C) 2018 Freie Universität Berlin
+# Copyright (C) 2020 Freie Universität Berlin
 #
 # This file is subject to the terms and conditions of the GNU Lesser
 # General Public License v2.1. See the file LICENSE in the top level
 # directory for more details.
 
 import sys
-import time
 from testrunner import run
 
 
-def _get_largest_timeout_difference(timeouts):
-    next_timeout = min(timeouts)
-    # get largest difference between all timeouts
-    timeout = max(a - b for a in timeouts for b in timeouts)
-    # check if smallest timeout (difference to 0) is the largest difference
-    if timeout < next_timeout:
-        timeout = next_timeout
-    return timeout
-
-
 def testfunc(child):
-    timers = {}
-    child.expect(r"Setting (\d+) timers:")
-    timers_numof = int(child.match.group(1))
-    for i in range(timers_numof):
-        child.expect(r" #(\d+) in (\d+) usec")
-        assert i == int(child.match.group(1))
-        timers[i] = int(child.match.group(2))
-    assert timers_numof == len(timers)
-    check_time = int(time.time())
-    child.expect(r"now=(\d+)")
-    offset = int(child.match.group(1))
-    # get largest possible timeout for expects below
-    timeout = _get_largest_timeout_difference(timers.values()) / (10**6) + 1
-    for i in range(timers_numof):
-        child.expect(r"#(\d):now=(\d+)", timeout=timeout)
-        t = int(child.match.group(1))
-        now = int(child.match.group(2))
-        assert (int(time.time()) - check_time) >= (timers[t] / 10**6)
-        expected = timers[t] + offset
-        assert expected <= now
+    child.expect_exact("[SUCCESS]")
 
 
 if __name__ == "__main__":