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esp_timer: reduce overflow value in unit tests

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This allows testing for race conditions which occur near timer
overflow point more effectively.
This commit is contained in:
Ivan Grokhotkov
2018-05-23 22:39:49 +08:00
committed by bot
parent 125bbf0882
commit 141e51b468
3 changed files with 53 additions and 1 deletions
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23
components/esp32/test/test_esp_timer.c
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@@ -2,6 +2,7 @@
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>
#include <sys/param.h>
#include "unity.h"
#include "esp_timer.h"
#include "esp_heap_caps.h"
@@ -15,6 +16,20 @@
#define WITH_PROFILING 1
#endif
extern uint32_t esp_timer_impl_get_overflow_val();
extern void esp_timer_impl_set_overflow_val(uint32_t overflow_val);
static uint32_t s_old_overflow_val;
static void setup_overflow()
{
s_old_overflow_val = esp_timer_impl_get_overflow_val();
esp_timer_impl_set_overflow_val(0x7fffff); /* overflow every ~0.1 sec */}
static void teardown_overflow()
{
esp_timer_impl_set_overflow_val(s_old_overflow_val);
}
TEST_CASE("esp_timer orders timers correctly", "[esp_timer]")
{
@@ -27,6 +42,7 @@ TEST_CASE("esp_timer orders timers correctly", "[esp_timer]")
const size_t num_timers = sizeof(timeouts)/sizeof(timeouts[0]);
esp_timer_handle_t handles[num_timers];
char* names[num_timers];
setup_overflow();
for (size_t i = 0; i < num_timers; ++i) {
asprintf(&names[i], "timer%d", i);
esp_timer_create_args_t args = {
@@ -36,6 +52,7 @@ TEST_CASE("esp_timer orders timers correctly", "[esp_timer]")
TEST_ESP_OK(esp_timer_create(&args, &handles[i]));
TEST_ESP_OK(esp_timer_start_once(handles[i], timeouts[i] * 100));
}
teardown_overflow();
char* stream_str[1024];
FILE* stream = fmemopen(stream_str, sizeof(stream_str), "r+");
TEST_ESP_OK(esp_timer_dump(stream));
@@ -90,6 +107,7 @@ TEST_CASE("esp_timer produces correct delay", "[esp_timer]")
const size_t delays_count = sizeof(delays_ms)/sizeof(delays_ms[0]);
ref_clock_init();
setup_overflow();
for (size_t i = 0; i < delays_count; ++i) {
t_end = 0;
int64_t t_start = ref_clock_get();
@@ -103,6 +121,7 @@ TEST_CASE("esp_timer produces correct delay", "[esp_timer]")
TEST_ASSERT_INT32_WITHIN(portTICK_PERIOD_MS, delays_ms[i], ms_diff);
}
teardown_overflow();
ref_clock_deinit();
TEST_ESP_OK( esp_timer_dump(stdout) );
@@ -150,6 +169,7 @@ TEST_CASE("periodic esp_timer produces correct delays", "[esp_timer]")
};
TEST_ESP_OK(esp_timer_create(&create_args, &timer1));
ref_clock_init();
setup_overflow();
args.timer = timer1;
args.t_start = ref_clock_get();
args.done = xSemaphoreCreateBinary();
@@ -161,6 +181,7 @@ TEST_CASE("periodic esp_timer produces correct delays", "[esp_timer]")
for (size_t i = 0; i < NUM_INTERVALS; ++i) {
TEST_ASSERT_INT32_WITHIN(portTICK_PERIOD_MS, (i + 1) * delay_ms, args.intervals[i]);
}
teardown_overflow();
ref_clock_deinit();
TEST_ESP_OK( esp_timer_dump(stdout) );
@@ -317,6 +338,7 @@ TEST_CASE("esp_timer for very short intervals", "[esp_timer]")
esp_timer_handle_t timer1, timer2;
ESP_ERROR_CHECK( esp_timer_create(&timer_args, &timer1) );
ESP_ERROR_CHECK( esp_timer_create(&timer_args, &timer2) );
setup_overflow();
const int timeout_ms = 10;
for (int timeout_delta_us = -150; timeout_delta_us < 150; timeout_delta_us++) {
printf("delta=%d", timeout_delta_us);
@@ -329,6 +351,7 @@ TEST_CASE("esp_timer for very short intervals", "[esp_timer]")
TEST_ESP_ERR(ESP_ERR_INVALID_STATE, esp_timer_stop(timer2));
}
teardown_overflow();
vSemaphoreDelete(semaphore);
}