text: /*
   * Copyright 2015 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 <stdbool.h>
  #include <stdio.h>
  #include <string.h>
  #include <assert.h>
  #include <stdlib.h>
  #include <stdio.h>
  
  #include <emscripten/emscripten.h>
  #include <emscripten/html5.h>
  
  #define DB "THE_DB"
  
  long expected;
  int result;
  
  void doExit(void* userData) {
    emscripten_force_exit(0);
  }
  
  void ok(void* arg)
  {
    assert(expected == (long)arg);
    emscripten_set_timeout(doExit, 0, 0);
  }
  
  void onerror(void* arg)
  {
    assert(expected == (long)arg);
    assert(false);
  }
  
  void onload(void* arg, void* ptr, int num)
  {
    assert(expected == (long)arg);
    printf("loaded %s\n", (char*)ptr);
    assert(num == strlen(SECRET)+1);
    assert(strcmp(ptr, SECRET) == 0);
    emscripten_set_timeout(doExit, 0, 0);
  }
  
  void onbadload(void* arg, void* ptr, int num)
  {
    printf("load failed, surprising\n");
    assert(false);
  }
  
  void oncheck(void* arg, int exists)
  {
    assert(expected == (long)arg);
    printf("exists? %d\n", exists);
    assert(exists);
    emscripten_set_timeout(doExit, 0, 0);
  }
  
  void onchecknope(void* arg, int exists)
  {
    assert(expected == (long)arg);
    printf("exists (hopefully not)? %d\n", exists);
    assert(!exists);
    emscripten_set_timeout(doExit, 0, 0);
  }
  
  int main() {
    result = STAGE;
  #if STAGE == 0
    expected = 12;
    printf("storing %s\n", SECRET);
    emscripten_idb_async_store(DB, "the_secret", SECRET, strlen(SECRET)+1, (void*)expected, ok, onerror);
  #elif STAGE == 1
    expected = 31;
    printf("loading the_secret\n");
    emscripten_idb_async_load(DB, "the_secret", (void*)expected, onload, onerror);
  #elif STAGE == 2
    expected = 44;
    printf("deleting the_secret\n");
    emscripten_idb_async_delete(DB, "the_secret", (void*)expected, ok, onerror);
  #elif STAGE == 3
    expected = 55;
    printf("loading, should fail as we deleted\n");
    emscripten_idb_async_load(DB, "the_secret", (void*)expected, onbadload, ok);
  #elif STAGE == 4
    expected = 66;
    emscripten_idb_async_exists(DB, "the_secret", (void*)expected, oncheck, onerror);
  #elif STAGE == 5
    expected = 77;
    emscripten_idb_async_exists(DB, "the_secret", (void*)expected, onchecknope, onerror);
  #else
    assert(0);
  #endif
  
    emscripten_exit_with_live_runtime();
    __builtin_trap();
  }
  
  