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#include "evdev.hpp"
#include "monitor.hpp"
#include <linux/input.h>
#include <sys/types.h>
#include <chrono>
#include <iostream>
#include <string>
#include <gtest/gtest.h>
using namespace phosphor::gpio;
// Exit helper. Ideally should be class but need
// this to be used inside a static method.
bool completed{};
class GpioTest : public ::testing::Test
{
public:
static constexpr auto DEVICE = "/tmp/test_fifo";
// systemd event handler
sd_event* events;
// Really needed just for the constructor
decltype(input_event::code) code = 10;
// Really needed just for the constructor
decltype(input_event::value) value = 10;
// Need this so that events can be initialized.
int rc;
// Gets called as part of each TEST_F construction
GpioTest() : rc(sd_event_default(&events))
{
// Check for successful creation of event handler
EXPECT_GE(rc, 0);
// FIFO created to simulate data available
EXPECT_EQ(0, mknod(DEVICE, S_IFIFO | 0666, 0));
}
// Gets called as part of each TEST_F destruction
~GpioTest()
{
EXPECT_EQ(0, remove(DEVICE));
events = sd_event_unref(events);
EXPECT_EQ(events, nullptr);
}
// Callback handler on data
static int callbackHandler(sd_event_source* es, int fd, uint32_t revents,
void* userData)
{
std::cout << "Event fired" << std::endl;
completed = true;
return 0;
}
};
/** @brief Makes sure that event never comes for 3 seconds
*/
TEST_F(GpioTest, noEventIn3Seconds)
{
using namespace std::chrono;
phosphor::gpio::EventPtr eventP{events};
events = nullptr;
const std::string emptyTarget = "";
Monitor gpio(DEVICE, code, value, emptyTarget, eventP, false,
callbackHandler, false);
// Waiting 3 seconds and check if the completion status is set
int count = 0;
while (count < 3)
{
// Returns -0- on timeout and positive number on dispatch
auto sleepTime = duration_cast<microseconds>(seconds(1));
if (!sd_event_run(eventP.get(), sleepTime.count()))
{
count++;
}
}
EXPECT_EQ(false, completed);
// 3 to cater to another uptick that happens prior to breaking.
EXPECT_EQ(3, count);
}
/** @brief Pump data in the middle and expect the callback to be invoked */
TEST_F(GpioTest, pumpDataAndExpectCallBack)
{
using namespace std::chrono;
phosphor::gpio::EventPtr eventP{events};
events = nullptr;
const std::string emptyTarget = "";
Monitor gpio(DEVICE, code, value, emptyTarget, eventP, false,
callbackHandler, false);
// Pump the data in the middle
int count = 0;
while (count < 2 && !completed)
{
if (count == 1)
{
auto pumpData = std::string("echo 'foo' > ") + DEVICE;
EXPECT_GE(0, system(pumpData.c_str()));
}
// Returns -0- on timeout
auto sleepTime = duration_cast<microseconds>(seconds(1));
if (!sd_event_run(eventP.get(), sleepTime.count()))
{
count++;
}
}
EXPECT_EQ(true, completed);
EXPECT_EQ(1, count);
}
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