/*************************************************
 * Linked_queue_tester<Type>
 * A class for testing linked queues.
 *
 * Author:  Douglas Wilhelm Harder
 * Copyright (c) 2014 by Douglas Wilhelm Harder.  All rights reserved.
 *
 * DO NOT EDIT THIS FILE
 *************************************************/

#ifndef LINKD_QUEUE_TESTER_H
#define LINKD_QUEUE_TESTER_H

#ifndef nullptr
#define nullptr 0
#endif

#include "Exception.h"
#include "Tester.h"
#include "Linked_queue.h"

#include <iostream>

template <typename Type>
class Linked_queue_tester:public Tester< Linked_queue<Type> > {
	using Tester< Linked_queue<Type> >::object;
	using Tester< Linked_queue<Type> >::command;

	public:
		Linked_queue_tester( Linked_queue<Type> *obj = nullptr ):Tester< Linked_queue<Type> >( obj ) {
			// empty
		}

		void process();
};

/****************************************************
 * void process()
 *
 * Process the current command.  For linked queues, these include:
 *
 *  Accessors
 *
 *   size n          size            the size equals n
 *   list_size n     list_size       the size of the linked list is n
 *   empty b         empty           the result is the Boolean value b
 *   front n         front           n is the first element in the linked list
 *   front!          front           the underflow exception is thrown
 *
 *  Mutators
 *
 *   push n          push            the element can be pushed onto the back (always succeeds)
 *   pop n           pop             the front element can be popped and equals n
 *   pop!            pop             the underflow exception is thrown
 *
 *  Others
 *   cout            cout << list    print the list (for testing only)
 *   assign          operator =      assign this list to a new list
 *   summary                         prints the amount of memory allocated
 *                                   minus the memory deallocated
 *   details                         prints a detailed description of which
 *                                   memory was allocated with details
 *   !!                              use the previous command, e.g.  5 push 3
 *                                                                   6 !! 7         // same as push 7
 *   !n                              use the command used in line n  7 front 7
 *                                                                   8 !7 9         // same as push 9
 *
 ****************************************************/

template <typename Type>
void Linked_queue_tester<Type>::process() {
	if ( command == "new" ) {
		object = new Linked_queue<Type>();
		std::cout << "Okay" << std::endl;
	} else if ( command == "size" ) {
		// check if the size equals the next integer read

		int expected_size;

		std::cin >> expected_size;

		int actual_size = object->size();

		if ( actual_size == expected_size ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in size(): expecting the value '" << expected_size << "' but got '" << actual_size << "'" << std::endl;
		}
	} else if ( command == "list_size" ) {
		// check if the list size equals the next integer read

		int expected_list_size;

		std::cin >> expected_list_size;

		int actual_list_size = object->list_size();

		if ( actual_list_size == expected_list_size ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in list_size(): expecting the value '" << expected_list_size << "' but got '" << actual_list_size << "'" << std::endl;
		}
	} else if ( command == "empty" ) {
		// check if the empty status equals the next Boolean read

		bool expected_empty;

		std::cin >> expected_empty;

		bool actual_empty = object->empty();

		if ( actual_empty == expected_empty ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in empty(): expecting the value '" << expected_empty << "' but got '" << actual_empty << "'" << std::endl;
		}
	} else if ( command == "front" ) {
		// checks if the first object in the linked list equals the next object read

		Type expected_front;

		std::cin >> expected_front;

		Type actual_front = object->front();

		if ( actual_front == expected_front ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in front(): expecting the value '" << expected_front << "' but got '" << actual_front << "'" << std::endl;
		}
	} else if ( command == "front!" ) {
		// front of an empty list - catch an exception

		Type actual_front;

		try {
			actual_front = object->front();
			std::cout << "Failure in front(): expecting to catch an exception but got '" << actual_front << "'" << std::endl;
		} catch( underflow ) {
			std::cout << "Okay" << std::endl;
		} catch (...) {
			std::cout << "Failure in front(): expecting an underflow exception but caught a different exception" << std::endl;
		}
	} else if ( command == "push" ) {
		// push the next object read to the front of the linked list

		Type n;

		std::cin >> n;

		object->push( n );
		std::cout << "Okay" << std::endl;
	} else if ( command == "pop" ) {
		// pop the first object from the linked list

		Type expected_popped_element;

		std::cin >> expected_popped_element;

		Type actual_popped_element = object->pop();

		if ( actual_popped_element == expected_popped_element ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in pop(): expecting the value '" << expected_popped_element << "' but got '" << actual_popped_element << "'" << std::endl;
		}
	} else if ( command == "pop!" ) {
		// pop from an empty list - catch an exception

		Type actual_popped_element;

		try {
			actual_popped_element = object->pop();
			std::cout << "Failure in pop(): expecting to catch an exception but got '" << actual_popped_element << "'" << std::endl;
		} catch( underflow ) {
			std::cout << "Okay" << std::endl;
		} catch (...) {
			std::cout << "Failure in pop(): expecting an underflow exception but caught a different exception" << std::endl;
		}
	} else if ( command == "assign" ) {
		Linked_queue<Type> *new_object = new Linked_queue<Type>();

		*new_object = *object;

		std::cout << "Okay" << std::endl;

		Linked_queue_tester<Type> tester( new_object );

		tester.run();
	} else if ( command == "cout" ) {
		std::cout << *object << std::endl;
	} else {
		std::cout << command << "Command not found." << std::endl;
	}
}

#endif