test_suite_timing.function (1379B)
1 /* BEGIN_HEADER */ 2 3 /* This test module exercises the timing module. Since, depending on the 4 * underlying operating system, the timing routines are not always reliable, 5 * this suite only performs very basic sanity checks of the timing API. 6 */ 7 8 #include <limits.h> 9 10 #include "mbedtls/timing.h" 11 12 /* END_HEADER */ 13 14 /* BEGIN_DEPENDENCIES 15 * depends_on:MBEDTLS_TIMING_C 16 * END_DEPENDENCIES 17 */ 18 19 /* BEGIN_CASE */ 20 void timing_get_timer() 21 { 22 struct mbedtls_timing_hr_time time; 23 24 memset(&time, 0, sizeof(time)); 25 26 (void) mbedtls_timing_get_timer(&time, 1); 27 28 /* Check that a non-zero time was written back */ 29 int all_zero = 1; 30 for (size_t i = 0; i < sizeof(time); i++) { 31 all_zero &= ((unsigned char *) &time)[i] == 0; 32 } 33 TEST_ASSERT(!all_zero); 34 35 (void) mbedtls_timing_get_timer(&time, 0); 36 37 /* This goto is added to avoid warnings from the generated code. */ 38 goto exit; 39 } 40 /* END_CASE */ 41 42 /* BEGIN_CASE */ 43 void timing_delay(int fin_ms) 44 { 45 mbedtls_timing_delay_context ctx; 46 int result; 47 if (fin_ms == 0) { 48 mbedtls_timing_set_delay(&ctx, 0, 0); 49 result = mbedtls_timing_get_delay(&ctx); 50 TEST_ASSERT(result == -1); 51 } else { 52 mbedtls_timing_set_delay(&ctx, fin_ms / 2, fin_ms); 53 result = mbedtls_timing_get_delay(&ctx); 54 TEST_ASSERT(result >= 0 && result <= 2); 55 } 56 } 57 /* END_CASE */