generated from freudenreichan/info2Praktikum-DobleSpiel
Test Stack geschrieben
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test_stack.c
107
test_stack.c
@ -1,61 +1,64 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include "stack.h"
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//Testfunkionen zu push, pull, top & clearStack schreiben
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StackNode *push(StackNode *stack, void *data)
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{
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if (!data)
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{
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return stack; //Nichts pushen
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}
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//if(stack && data){
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StackNode *t = (StackNode *)malloc(sizeof(StackNode));
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if(!t)
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{
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return NULL; //Speicherfehler
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}
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t->next = stack;
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t->data = data;
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return t; //Gibt den ersten StackNode des Stacks zurueck
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//}
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return NULL;
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void test(char *name, int condition) {
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if (condition) {
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printf("[OK] %s\n", name);
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} else {
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printf("[FAIL] %s\n", name);
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}
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}
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// Deletes the top element of the stack (latest added element) and releases its memory. (Pointer to data has to be
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// freed by caller.)
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StackNode *pop(StackNode *stack)
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{
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if(stack)
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{
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StackNode *t = stack->next; //Naechstes Element im Stack wird erstes Element
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free(stack);
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return t;
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}
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else
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{
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return NULL;
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}
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}
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int main() {
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// Returns the data of the top element.
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void *top(StackNode *stack)
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{
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if(stack)
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{
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return stack->data;
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}
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return NULL;
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}
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StackNode *stack = NULL;
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// Clears stack and releases all memory.
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void clearStack(StackNode *stack)
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{
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while(stack)
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{
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StackNode *tmp = stack; //merkt sich den momentanen obersten Knoten
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stack = stack->next; //setzt den obersten Knoten auf den Zweiten im Stack
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free(tmp->data);
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free(tmp);
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}
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}
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// Werte dynamisch anlegen
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int *val1 = malloc(sizeof(int));
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*val1 = 5;
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stack = push(stack, val1);
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test("push(5) legt 5 oben auf den Stack", *(int*)stack->data == 5);
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int *val2 = malloc(sizeof(int));
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*val2 = 6;
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stack = push(stack, val2);
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test("push(6) legt 6 oben auf den Stack", *(int*)stack->data == 6);
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int *val3 = malloc(sizeof(int));
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*val3 = 24;
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stack = push(stack, val3);
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test("push(24) legt 24 oben auf den Stack", *(int*)stack->data == 24);
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// Test top()
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int t = *(int*)top(stack);
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test("top() liefert 24", t == 24);
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// Test pop()
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StackNode *tmp;
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tmp = stack;
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stack = pop(stack);
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free(tmp->data); // Daten freigeben
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free(tmp); // Knoten freigeben
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test("pop() entfernt 24, 6 ist jetzt oben", *(int*)stack->data == 6);
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tmp = stack;
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stack = pop(stack);
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free(tmp->data);
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free(tmp);
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test("pop() entfernt 6, 5 ist jetzt oben", *(int*)stack->data == 5);
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tmp = stack;
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stack = pop(stack);
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free(tmp->data);
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free(tmp);
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test("pop() entfernt 5, Stack ist jetzt leer", stack == NULL);
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// Am Ende Stack leeren (falls noch Elemente übrig)
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clearStack(stack);
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return 0;
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}
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