/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include <grpc/support/useful.h>
#include "test/core/util/test_config.h"

#define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)

static void *create_test_tag(void) {
  static intptr_t i = 0;
  return (void *)(++i);
}

/* helper for tests to shutdown correctly and tersely */
static void shutdown_and_destroy(grpc_completion_queue *cc) {
  grpc_event ev;
  grpc_completion_queue_shutdown(cc);
  ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME), NULL);
  GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
  grpc_completion_queue_destroy(cc);
}

static void test_alarm(void) {
  grpc_completion_queue *cc;

  LOG_TEST("test_alarm");
  cc = grpc_completion_queue_create(NULL);
  {
    /* regular expiry */
    grpc_event ev;
    void *tag = create_test_tag();
    grpc_alarm *alarm =
        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(1), tag);

    ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(2),
                                    NULL);
    GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
    GPR_ASSERT(ev.tag == tag);
    GPR_ASSERT(ev.success);
    grpc_alarm_destroy(alarm);
  }
  {
    /* cancellation */
    grpc_event ev;
    void *tag = create_test_tag();
    grpc_alarm *alarm =
        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(2), tag);

    grpc_alarm_cancel(alarm);
    ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(1),
                                    NULL);
    GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
    GPR_ASSERT(ev.tag == tag);
    GPR_ASSERT(ev.success == 0);
    grpc_alarm_destroy(alarm);
  }
  shutdown_and_destroy(cc);
}

int main(int argc, char **argv) {
  grpc_test_init(argc, argv);
  grpc_init();
  test_alarm();
  grpc_shutdown();
  return 0;
}