test_glfw_time.c

/*
 * Copyright 2017 The Emscripten Authors.  All rights reserved.
 * Emscripten is available under two separate licenses, the MIT license and the
 * University of Illinois/NCSA Open Source License.  Both these licenses can be
 * found in the LICENSE file.
 */

#include <assert.h>
#include <stdio.h>
#include <GLFW/glfw3.h>

int main() {
  if (!glfwInit()) {
    return 1;
  }

  float t = glfwGetTime();
  printf("glfwGetTime() = %f\n", t);

  printf("glfwSetTime(50)\n");
  glfwSetTime(50);

  // Expect time to be slightly greater than what we set
  t = glfwGetTime();
  printf("glfwGetTime() = %f\n", t);
  assert(t < 50 + 1e-3);

  glfwTerminate();

  return 0;
}