/*************************************************
 * B_tree_tester
 * A class for testing B-trees.
 *
 * Author:  Douglas Wilhelm Harder
 * Copyright (c) 2006-11 by Douglas Wilhelm Harder.  All rights reserved.
 *
 * DO NOT EDIT THIS FILE
 *************************************************/

#ifndef B_TREE_TESTER_H
#define B_TREE_TESTER_H

#ifndef nullptr
#define nullptr 0
#endif

#include "Exception.h"
#include "Tester.h"
#include "B_tree.h"
#include "B_tree_node.h"
#include "B_tree_node_tester.h"

#include <iostream>

template <typename Type>
class B_tree_tester:public Tester< B_tree<Type> > {
	using Tester< B_tree<Type> >::object;
	using Tester< B_tree<Type> >::command;

	public:
		B_tree_tester( B_tree<Type> *obj = 0 ):Tester< B_tree<Type> >( obj ) {
			// empty
		}

		void process();
};

/****************************************************
 * void process()
 *
 * Process the current command.  For B-trees, these include:
 *
 *  Accessors
 *
 *   size n          size            the size equals n
 *   empty b         empty           the result is the Boolean value b
 *   root            root            the root is not 0 and sends the next N instructions to B_tree_node_tester
 *   count n m       count           the count of n is m
 *   draw            draw            draw the B tree
 *
 *  Mutators
 *
 *   insert n        insert          the element can be pushed onto the front (always succeeds)
 *
 *  Others
 *   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_front 3
 *                                                                   6 !! 7         // same as push_front 7
 *   !n                              use the command used in line n  7 front 7
 *                                                                   8 !7 9         // same as push_front 9
 *
 ****************************************************/

template <typename Type>
void B_tree_tester<Type>::process() {
	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 == "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 == "root" ) {
		// checks that the root is not null, and if it is not,
		// the next object gives the number of commands which should
		// be tested by the B_tree_node_tester

		B_tree_node<Type> *actual_root = object->root();

		if ( actual_root == 0 ) {
			std::cout << "Failure in root(): expecting a non-null root pointer" << std::endl;
		} else {
			std::cout << "Okay" << std::endl;

			B_tree_node_tester<Type> tester( actual_root );

			tester.run();
		}
	} else if ( command == "count" ) {
		// check if the next object read in is in the B-tree

		Type element;
		int expected_count;

		std::cin >> element;
		std::cin >> expected_count;

		int actual_count = object->count( element );

		if ( actual_count == expected_count ) {
			std::cout << "Okay" << std::endl;
		} else {
			std::cout << "Failure in count( " << element << " ): expecting the value '" << expected_count << "' but got '" << actual_count << "'" << std::endl;
		}
	} else if ( command == "insert" ) {
		// insert the next object read into the B-tree

		Type n;

		std::cin >> n;

		object->insert( n );
		std::cout << "Okay" << std::endl;
	} else if ( command == "draw" ) {
		std::cout << std::endl;
		object->draw();
	} else {
		std::cout << command << ": Command not found." << std::endl;
	}
}

#endif