// Copyright 2022 The TensorStore Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "tensorstore/internal/schedule_at.h"

#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "absl/synchronization/notification.h"
#include "tensorstore/util/executor.h"

namespace {

using ::tensorstore::internal::ScheduleAt;

// Tests that the thread pool runs a task.
TEST(DelayExecutorTest, Basic) {
  absl::Notification a, b;

  auto now = absl::Now();
  ScheduleAt(now + absl::Milliseconds(1), [&] { a.Notify(); });
  ScheduleAt(now + absl::Milliseconds(5), [&] { b.Notify(); });
  EXPECT_FALSE(b.HasBeenNotified());
  b.WaitForNotification();
  EXPECT_TRUE(a.HasBeenNotified());
}

}  // namespace
