/*
 *
 * 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++/alarm.h>
#include <grpc++/completion_queue.h>
#include <gtest/gtest.h>

#include "test/core/util/test_config.h"

namespace grpc {
namespace {

TEST(AlarmTest, RegularExpiry) {
  CompletionQueue cq;
  void* junk = reinterpret_cast<void*>(1618033);
  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), junk);

  void* output_tag;
  bool ok;
  const CompletionQueue::NextStatus status = cq.AsyncNext(
      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2));

  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
  EXPECT_TRUE(ok);
  EXPECT_EQ(junk, output_tag);
}

TEST(AlarmTest, RegularExpiryChrono) {
  CompletionQueue cq;
  void* junk = reinterpret_cast<void*>(1618033);
  std::chrono::system_clock::time_point one_sec_deadline =
      std::chrono::system_clock::now() + std::chrono::seconds(1);
  Alarm alarm(&cq, one_sec_deadline, junk);

  void* output_tag;
  bool ok;
  const CompletionQueue::NextStatus status = cq.AsyncNext(
      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2));

  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
  EXPECT_TRUE(ok);
  EXPECT_EQ(junk, output_tag);
}

TEST(AlarmTest, ZeroExpiry) {
  CompletionQueue cq;
  void* junk = reinterpret_cast<void*>(1618033);
  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0), junk);

  void* output_tag;
  bool ok;
  const CompletionQueue::NextStatus status = cq.AsyncNext(
      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0));

  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
  EXPECT_TRUE(ok);
  EXPECT_EQ(junk, output_tag);
}

TEST(AlarmTest, NegativeExpiry) {
  CompletionQueue cq;
  void* junk = reinterpret_cast<void*>(1618033);
  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(-1), junk);

  void* output_tag;
  bool ok;
  const CompletionQueue::NextStatus status = cq.AsyncNext(
      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0));

  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
  EXPECT_TRUE(ok);
  EXPECT_EQ(junk, output_tag);
}

TEST(AlarmTest, Cancellation) {
  CompletionQueue cq;
  void* junk = reinterpret_cast<void*>(1618033);
  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2), junk);
  alarm.Cancel();

  void* output_tag;
  bool ok;
  const CompletionQueue::NextStatus status = cq.AsyncNext(
      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));

  EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
  EXPECT_FALSE(ok);
  EXPECT_EQ(junk, output_tag);
}

}  // namespace
}  // namespace grpc

int main(int argc, char** argv) {
  grpc_test_init(argc, argv);
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}