#pragma once
////////////////////////////////////////////////////////////////////////////
// DllLoader.h : Test-Driver-DLL loader that uses ITests.h as protocole   //
// ver 1.1                                                                //
//                                                                        //
// Application : OOD F18 Project 2 Help                                   //
// Platform    : VS17 Community - Windows 10 Professional x64             //
// Author      : Ammar Salman, EECS Department, Syracuse University       //
//               313/788-4694, hoplite.90@hotmail.com                     //
////////////////////////////////////////////////////////////////////////////
/*
*  Package description:
* ======================
*  This package loads Test-Driver DLLs that follow the ITests protocole
*  defined in ITests.h 
*
*  The protocol forces all TestDrivers to have an implementation of ITests
*  interface which holds a collection of ITest pointers. This package will
*  attempt to load the DLL, get an instance of ITests* and retrieve the
*  std::vector<ITest*> contained within the DLL.
*
*  Required files:
* =================
*  ITests.h DllLoader.h DllLoader.cpp
*  Note: nothing else is needed since this will load the DLLs at RUNTIME.
*
*  Maintainence History:
* =======================
*  ver 1.1 : 27 Sep 2018 : Jim Fawcett
*  - demonstrate some options for converting strings
*  ver 1.0 : 24 Sep 2018 : Ammar Salman
*  - first release
*/


#include "../ITests.h"
#include <vector>
#include <windows.h>


class DllLoader
{
public:
	DllLoader();
	~DllLoader();
	bool loadAndExtract(const std::string& dll); 
	const std::vector<ITest*>& tests() const; 
	void clear();  // unloads the DLL (if loaded) and clears all extracted tests

private:
	std::vector<ITest*> extractedTests;  // contains the set of tests extracted from the TestDriver DLL
	HMODULE hmod;  // handle to the loaded DLL
};