awtk/tests/fps_test.cc

#include "tkc/fps.h"
#include "tkc/platform.h"
#include "gtest/gtest.h"

TEST(FPS, basic) {
  fps_t fps;
  uint32_t i = 0;
  uint64_t start = time_now_ms();

  ASSERT_EQ(fps_init(&fps), RET_OK);
  for (i = 0; i < 180; i++) {
    ASSERT_EQ(fps_inc(&fps), RET_OK);
  }
  uint32_t cost = time_now_ms() - start;
  sleep_ms(3000 - cost);
  cost = time_now_ms() - start;
  log_debug("cost=%u\n", cost);

  ASSERT_EQ(fps_get(&fps), tk_roundi(180 * 1000.0 / cost));
}