added test_push and fixed stack cast

stack.c

@@ -13,7 +13,7 @@ StackNode *push(StackNode *stack, void *data)
     StackNode *tempNode, *newNode;
 
     newNode = malloc(sizeof(StackNode));
-    newNode->value = 3;
+    newNode->value = *(int *)data;
     newNode->next = NULL;
 
     if (stack == NULL)

test_stack.c

@@ -3,75 +3,52 @@
 #include "stack.h"
 #include "unity.h"
 
-StackNode* setup(int value, StackNode* next) {
+void test_push(void)
-    StackNode* node = malloc(sizeof(StackNode)); // allocate memory on heap
+{
-    if (node == NULL) {
+    StackNode *testNode;
-        perror("malloc failed");
+    int data = 1;
-        exit(EXIT_FAILURE); // or handle the error differently
+
-    }
+    // Test für leeren Stack
-    node->value = value;
+    testNode = push(NULL, &data);
-    node->next = next;
+    TEST_ASSERT_NOT_NULL(&testNode);
-    return node;
+    TEST_ASSERT_NULL(testNode->next);
+    TEST_ASSERT_EQUAL_INT(1, testNode->value);
+
+    data = 2;
+
+    // Test für nicht leeren Stack
+    testNode = push(testNode, &data);
+    TEST_ASSERT_NOT_NULL(&testNode);
+    TEST_ASSERT_NOT_NULL(testNode->next);
+    TEST_ASSERT_NULL(testNode->next->next);
+    TEST_ASSERT_EQUAL_INT(1, testNode->value);
+    TEST_ASSERT_EQUAL_INT(2, testNode->next->value);
 }
 
 void test_pop(void)
 {
-    StackNode* node2 = setup(3, NULL);
-    StackNode* node1 = setup(2, node2);
-    StackNode* header = setup(1, node1);
-    StackNode* temp;
     
-    temp = pop(header);
+    TEST_ASSERT_NULL(pop(NULL));
-    int after = 0;
-    while(temp) 
-    {
-        after++;
-        temp = temp->next;
-    }
 
-    
-    TEST_ASSERT_EQUAL_INT(2, after);
-    TEST_ASSERT_NULL(node1->next);
 }
 
 void test_top(void)
 {
-    StackNode* node2 = setup(3, NULL);
-    StackNode* node1 = setup(2, node2);
-    StackNode* header = setup(1, node1);
 
-    int data = *(int *)top(header);
+    TEST_ASSERT_NULL(top(NULL));
-    TEST_ASSERT_EQUAL_INT(node2->value, data);
 }
 
-void test_clear()
+void test_clear(void)
 {
-    StackNode* node2 = setup(3, NULL);
-    StackNode* node1 = setup(2, node2);
-    StackNode* header = setup(1, node1);
-    StackNode* temp;
 
-    clearStack(header);
+    // TEST_ASSERT_NULL(clearStack(NULL));
-    temp = header;
-    
-    int after = 0;
-    while(temp) 
-    {
-        after++;
-        temp = temp->next;
 }
 
-    
+void setUp(void) {
-    TEST_ASSERT_NULL(after);
-}
-
-void setUp(void)
-{
     // Falls notwendig, kann hier Vorbereitungsarbeit gemacht werden
 }
 
-void tearDown(void)
+void tearDown(void) {
-{
     // Hier kann Bereinigungsarbeit nach jedem Test durchgeführt werden
 }
 
@@ -81,6 +58,7 @@ int main()
 
     printf("============================\nStack tests\n============================\n");
 
+    RUN_TEST(test_push);
     RUN_TEST(test_pop);
     RUN_TEST(test_top);
     RUN_TEST(test_clear);