// Copyright(c) 2018, Intel Corporation
//
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#include <chrono>
#include <thread>
#include <unistd.h>
#include "gtest/gtest.h"
#include "mock/test_system.h"
#include "mock/fpgad_control.h"
#include <opae/cxx/core/events.h>
#include <opae/cxx/core/token.h>
#include <opae/cxx/core/handle.h>
#include <opae/cxx/core/properties.h>

#include "intel-fpga.h"

using namespace opae::testing;
using namespace opae::fpga::types;

class events_cxx_core : public ::testing::TestWithParam<std::string>,
                        public fpgad_control {
 protected:
  events_cxx_core() : handle_(nullptr) {}

  virtual void SetUp() override {
    ASSERT_TRUE(test_platform::exists(GetParam()));
    platform_ = test_platform::get(GetParam());
    system_ = test_system::instance();
    system_->initialize();
    system_->prepare_syfs(platform_);

    ASSERT_EQ(fpgaInitialize(nullptr), FPGA_OK);

    properties::ptr_t props = properties::get(FPGA_ACCELERATOR);

    auto device_id = platform_.devices[0].device_id;
    if (platform_.devices[0].num_vfs) {
      device_id++;
    }
    props->device_id = device_id;

    tokens_ = token::enumerate({props});
    ASSERT_TRUE(tokens_.size() > 0);

    handle_= handle::open(tokens_[0], 0);
    ASSERT_NE(nullptr, handle_.get());

    fpgad_start();
  }

  virtual void TearDown() override {
    fpgad_stop();
    handle_.reset();
    ASSERT_NO_THROW(tokens_.clear());
    fpgaFinalize();
    system_->finalize();
  }

  std::vector<token::ptr_t> tokens_;
  handle::ptr_t handle_;
  test_platform platform_;
  test_system *system_;
};

/**
 * @test register_event_01
 * Given an open accelerator handle object<br>
 * When I call event::register_event() with nullptr handle<br>
 * And event type of FPGA_EVENT_ERROR
 * Then exception is thrown<br>
 * And I get a std invalid_argument<br>
 */
TEST_P(events_cxx_core, register_event_01) {
  event::ptr_t ev;
  ASSERT_THROW(ev = event::register_event(nullptr, FPGA_EVENT_ERROR), std::invalid_argument);
  ASSERT_EQ(nullptr, ev.get());
}

/**
 * @test register_event_02
 * Given an open handleerator handle object<br>
 * When I call event::register_event() with that handle<br>
 * And event type of event::type_t::error
 * Then no exception is thrown<br>
 * And I get a non-null event shared pointer<br>
 */
TEST_P(events_cxx_core, register_event_02) {
  event::ptr_t ev;
  ASSERT_NO_THROW(ev = event::register_event(handle_, event::type_t::error));
  ASSERT_NE(nullptr, ev.get());
}

/**
 * @test register_event_03
 * Given an open handleerator handle object<br>
 * When I call event::register_event() with that handle<br>
 * And event type of FPGA_EVENT_ERROR
 * Then no exception is thrown<br>
 * And I get a non-null event shared pointer<br>
 */
TEST_P(events_cxx_core, register_event_03) {
  event::ptr_t ev;
  ASSERT_NO_THROW(ev = event::register_event(handle_, FPGA_EVENT_ERROR));
  ASSERT_NE(nullptr, ev.get());
}

/**
 * @test get_os_object
 * Given an open handleerator handle object<br>
 * And an event object created with event::register_event()<br>
 * When I call event::os_object using the event object<br>
 * Then I get a valid file descriptor for polling on the event<br>
 */
TEST_P(events_cxx_core, get_os_object) {
  event::ptr_t ev;
  ASSERT_NO_THROW(ev = event::register_event(handle_, FPGA_EVENT_ERROR));
  ASSERT_NE(nullptr, ev.get());
  auto fd = ev->os_object();
  auto res = fcntl(fd, F_GETFL);
  ASSERT_NE(res, -1);
}

INSTANTIATE_TEST_CASE_P(events, events_cxx_core, ::testing::ValuesIn(test_platform::keys(true)));