#include "VideoIOBackendFactory.h"
#include "VideoIOTypes.h"

#include <iostream>

namespace
{
int gFailures = 0;

void Expect(bool condition, const char* message)
{
	if (condition)
		return;

	std::cerr << "FAIL: " << message << "\n";
	++gFailures;
}
}

int main()
{
	std::string error;
	std::unique_ptr<VideoIODevice> device = CreateVideoIODevice(VideoIOBackendId::DeckLink, error);
	Expect(device != nullptr, "decklink backend factory returns a device");
	Expect(!device || device->BackendId() == VideoIOBackendId::DeckLink, "decklink backend reports decklink id");
	Expect(error.empty(), "supported backend does not produce an error");

	error.clear();
	device = CreateVideoIODevice(static_cast<VideoIOBackendId>(999), error);
	Expect(device == nullptr, "unknown backend id is rejected");
	Expect(!error.empty(), "unknown backend reports an error");

	if (gFailures != 0)
	{
		std::cerr << gFailures << " VideoIO backend factory test failure(s).\n";
		return 1;
	}

	std::cout << "VideoIO backend factory tests passed.\n";
	return 0;
}