src/test/unit/time_unittest.cc

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdint.h>
  19 #include <stdbool.h>
  20
  21 #include <limits.h>
  22
  23 extern "C" {
  24     #include "common/time.h"
  25     #include "drivers/time.h"
  26     extern timeUs_t usTicks;
  27     extern volatile timeMs_t sysTickUptime;
  28     extern volatile timeMs_t sysTickValStamp;
  29 }
  30
  31 #include "unittest_macros.h"
  32 #include "gtest/gtest.h"
  33
  34 SysTick_Type SysTickValue;
  35 SysTick_Type *SysTick = &SysTickValue;
  36
  37 TEST(TimeUnittest, TestMillis)
  38 {
  39     sysTickUptime = 0;
  40     EXPECT_EQ(0, millis());
  41     sysTickUptime = 1;
  42     EXPECT_EQ(1, millis());
  43 }
  44
  45 TEST(TimeUnittest, TestMicros)
  46 {
  47     usTicks = 168;
  48     sysTickValStamp = SysTick->VAL = 1000 * usTicks;
  49     sysTickUptime = 0;
  50     EXPECT_EQ(0, micros());
  51     sysTickUptime = 1;
  52     EXPECT_EQ(1000, micros());
  53     // ULONG_MAX = 4294967295
  54     sysTickUptime = 429496; // ULONG_MAX / 1000;
  55     EXPECT_EQ(429496000, micros());
  56     sysTickUptime = 429497;
  57     EXPECT_EQ(429497000, micros());
  58     sysTickUptime = 500000;
  59     EXPECT_EQ(500000000, micros());
  60
  61     sysTickUptime = 0;
  62     sysTickValStamp = SysTick->VAL = 0;
  63     EXPECT_EQ(1000, micros());
  64     sysTickUptime = 1;
  65     EXPECT_EQ(2000, micros());
  66     // ULONG_MAX = 4294967295
  67     sysTickUptime = 429496; // ULONG_MAX / 1000;
  68     EXPECT_EQ(429497000, micros());
  69     sysTickUptime = 429497;
  70     EXPECT_EQ(429498000, micros());
  71     sysTickUptime = 500000;
  72     EXPECT_EQ(500001000, micros());
  73 }