osi/test/future_test.cpp

/******************************************************************************
 *
 *  Copyright (C) 2014 Google, Inc.
 *
 *  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 <gtest/gtest.h>

#include "AllocationTestHarness.h"

extern "C" {
#include "future.h"
#include "osi.h"
#include "thread.h"
}

static const char *pass_back_data0 = "fancy a sandwich? it's a fancy sandwich";
static const char *pass_back_data1 = "what kind of ice cream truck plays the worst christmas song of all time?";

class FutureTest : public AllocationTestHarness {};

static void post_to_future(void *context) {
  future_ready((future_t *)context, (void *)pass_back_data0);
}

TEST_F(FutureTest, test_future_non_immediate) {
  future_t *future = future_new();
  ASSERT_TRUE(future != NULL);

  thread_t *worker_thread = thread_new("worker thread");
  thread_post(worker_thread, post_to_future, future);

  EXPECT_EQ(pass_back_data0, future_await(future));

  thread_free(worker_thread);
}

TEST_F(FutureTest, test_future_immediate) {
  future_t *future = future_new_immediate((void *)pass_back_data1);
  ASSERT_TRUE(future != NULL);
  EXPECT_EQ(pass_back_data1, future_await(future));
}