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Damimani 2026-10-24 09:35:47 +02:00
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156
feladat2/UnitTest1/UnitTest1.cpp Normal file
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//Tóth Dániel Mátyás | IFPQYY | v2
#include "pch.h"
#include "CppUnitTest.h"
#include "feladat2.h"
using namespace Microsoft::VisualStudio::CppUnitTestFramework;
namespace UnitTest1
{
TEST_CLASS(UnitTest1)
{
public:
//Works weirdly, seems like the test methods are not isolated in themselves in this instance, will need to create and destroy in every
//seperate test to guarantee they will work as intended. If only these were in classes instead of being global.....
TEST_METHOD(CreateTest1)
{
destroyfifo();
Assert::AreEqual(OK, createfifo(10));
destroyfifo();
}
TEST_METHOD(CreateTest2)
{
createfifo(10);
Assert::AreEqual(NOK, createfifo(10));
destroyfifo();
}
TEST_METHOD(DestroyTest1)
{
createfifo(10);
Assert::AreEqual(OK, destroyfifo());
}
TEST_METHOD(DestroyTest2)
{
destroyfifo();
Assert::AreEqual(NOK, destroyfifo());
}
TEST_METHOD(PushTest1)
{
destroyfifo();
createfifo(10);
Assert::AreEqual(OK, push('c'));
destroyfifo();
}
TEST_METHOD(PopTest1)
{
destroyfifo();
createfifo(10);
push('c');
Assert::AreEqual('c', (char)pop());
destroyfifo();
}
TEST_METHOD(PopTest2)
{
destroyfifo();
createfifo(10);
Assert::AreEqual(NOK, pop());
destroyfifo();
}
TEST_METHOD(PopTest3)
{
destroyfifo();
createfifo(10);
push('c');
Assert::AreEqual('c', (char)pop());
Assert::AreEqual(NOK, pop());
destroyfifo();
}
TEST_METHOD(PeekTest1)
{
destroyfifo();
createfifo(10);
push('c');
Assert::AreEqual('c', (char)peek());
Assert::AreEqual('c', (char)peek());
destroyfifo();
}
TEST_METHOD(PeekTest2)
{
destroyfifo();
createfifo(10);
Assert::AreEqual(NOK, pop());
destroyfifo();
}
TEST_METHOD(FreespaceTest1)
{
destroyfifo();
int s = 5;
createfifo(s);
for (int i = 0; i < s; i++)
{
push('t');
}
Assert::AreEqual(0, freespace());
destroyfifo();
}
TEST_METHOD(FreespaceTest2)
{
destroyfifo();
int s = 5;
createfifo(s);
for (int i = 0; i < s-1; i++)
{
push('t');
}
Assert::AreEqual(1, freespace());
destroyfifo();
}
TEST_METHOD(CapacityTest1)
{
destroyfifo();
int s = 5;
createfifo(s);
Assert::AreEqual(s, capacity());
destroyfifo();
}
TEST_METHOD(CapacityTest2)
{
destroyfifo();
int s = 5;
createfifo(s);
push('c');
Assert::AreEqual(s, capacity());
destroyfifo();
}
TEST_METHOD(ClearTest1)
{
destroyfifo();
createfifo(10);
push('c');
Assert::AreEqual(OK, clearfifo());
Assert::AreEqual(NOK, pop());
Assert::AreEqual(NOK, peek());
destroyfifo();
}
TEST_METHOD(ClearTest2)
{
destroyfifo();
Assert::AreEqual(NOK, clearfifo());
}
TEST_METHOD(EnlargeTest)
{
destroyfifo();
createfifo(2); //2
push('c'); //1
push('a'); //0
push('d'); //doubles
Assert::AreEqual(4, capacity());
}
};
}

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5
feladat2/UnitTest1/pch.cpp Normal file
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// pch.cpp: source file corresponding to the pre-compiled header
#include "pch.h"
// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

12
feladat2/UnitTest1/pch.h Normal file
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// pch.h: This is a precompiled header file.
// Files listed below are compiled only once, improving build performance for future builds.
// This also affects IntelliSense performance, including code completion and many code browsing features.
// However, files listed here are ALL re-compiled if any one of them is updated between builds.
// Do not add files here that you will be updating frequently as this negates the performance advantage.
#ifndef PCH_H
#define PCH_H
// add headers that you want to pre-compile here
#endif //PCH_H

8
feladat2/feladat2.slnx Normal file
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139
feladat2/feladat2/feladat2.cpp Normal file
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//Tóth Dániel Mátyás | IFPQYY | v2
#include <cstdio>
#include <stdlib.h>
#include "feladat2.h"
static unsigned char* fifo;
static bool activefifo = false;
static int head = 0;
static int tail = 0;
static int lngt = 0;
static bool full = false;
int createfifo(int s) {
if (activefifo || s <= 0 || !(fifo = (unsigned char*)malloc(sizeof(char) * s)))
{
return NOK;
}
activefifo = true;
head = 0;
tail = 0;
lngt = s;
full = false;
return OK;
}
int destroyfifo(void) {
if (!activefifo || fifo == nullptr)
{
return NOK;
}
free(fifo);
activefifo = false;
return OK;
}
static int enlargefifo(void) {
if (fifo == nullptr)
{
return NOK;
}
unsigned char* temp = fifo;
activefifo = false;
int headtemp = head;
int tailtemp = tail;
int templngt = lngt;
if (createfifo(lngt * 2) == -1)
{
fifo = temp;
activefifo = true;
return NOK;
}
int i = 0;
while (headtemp != tailtemp) {
fifo[i++] = temp[tailtemp];
tailtemp = (tailtemp + 1) % templngt;
}
head = templngt - 1;
return OK;
}
int push(char c) {
if (!activefifo || fifo == nullptr)
{
return -1;
}
if (full)
{
if (enlargefifo() == NOK) {
return NOK;
}
}
fifo[head] = c;
head = (head + 1) % lngt;
if (head == tail) {
full = true;
}
return OK;
}
int pop(void) {
if (!activefifo || (head == tail && !full) || fifo == nullptr)
{
return NOK;
}
int ret = fifo[tail];
tail = (tail + 1) % lngt;
return ret;
}
int clearfifo(void) {
if (!activefifo) {
return NOK;
}
head = 0;
tail = 0;
full = false;
return OK;
}
int freespace(void) {
if (!activefifo) {
return NOK;
}
if (full) {
return 0;
}
return lngt - ((head - tail + lngt) % lngt);
}
int capacity(void) {
if (!activefifo) {
return NOK;
}
return lngt * sizeof(char);
}
void debugfifo(void) {
if (!activefifo || fifo == nullptr) {
return;
}
for (int i = 0; i < lngt; ++i) {
if (full || (head < tail && (i > head || i <= tail)) || (i < head && i >= tail))
{
printf("%d: %02x \n", i, fifo[i]);
}
else
{
printf("%d: URES \n", i);
}
}
}
int peek(void) {
if (!activefifo || (head == tail && !full) || fifo == nullptr) {
return NOK;
}
return fifo[tail];
}

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feladat2/feladat2/feladat2.h Normal file
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//Tóth Dániel Mátyás | IFPQYY | v2
#pragma once
#define OK 0
#define NOK -1
int createfifo(int s);
int destroyfifo(void);
int push(char c);
int pop(void);
int clearfifo(void);
int freespace(void);
int capacity(void);
void debugfifo(void);
int peek(void);

151
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//Tóth Dániel Mátyás | IFPQYY | v2
#include <stdio.h>
#include "feladat2.h"
int main() {
//things that are supposed to be reachable actually are
createfifo(10);
push('c');
char c = pop();
printf("%c\n", c);
//and things that are not supposed to be are not
//enlargefifo();
push('d');
push('e');
push('m');
c = pop();
debugfifo();
destroyfifo();
return 0;
}