From 57f9914e2b029fc91a75410b07e48fcddd2c8953 Mon Sep 17 00:00:00 2001
From: Kristin <hofmann.kristin@web.de>
Date: Tue, 9 Dec 2025 09:57:41 +0100
Subject: [PATCH] =?UTF-8?q?stacktest=20=C3=BCberarbeitet?=
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---
 test_stack.c | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/test_stack.c b/test_stack.c
index bad0e40..a47882b 100644
--- a/test_stack.c
+++ b/test_stack.c
@@ -75,11 +75,12 @@ void test_deleteTopElement(void) {
     stack = push(stack, &testInts[i]);
   }
 
-  TEST_ASSERT_EQUAL_PTR(&testInts[2], stack->data);
+  TEST_ASSERT_EQUAL_PTR(&testInts[2], stack->data); // oberstes Element ist 30
 
-  stack = pop(stack);
+  stack = pop(stack); // oberstes Element löschen
   TEST_ASSERT_EQUAL_PTR(&testInts[1], stack->data);
-  TEST_ASSERT_NULL(stack->prev);
+  TEST_ASSERT_NULL(
+      stack->prev); // pointer zum alten head wurde auf NULL gesetzt
 
   stack = pop(stack);
   TEST_ASSERT_EQUAL_PTR(&testInts[0], stack->data);
@@ -98,20 +99,16 @@ void test_returnData(void) {
     stack = push(stack, &testInts[i]);
   }
 
-  TEST_ASSERT_EQUAL_PTR(&testInts[2], top(stack));
+  TEST_ASSERT_EQUAL_PTR(&testInts[2],
+                        top(stack)); // top gibt richtige Adresse zurück
+  stack = pop(stack);                // oberstes Element löschen
+  TEST_ASSERT_EQUAL_PTR(&testInts[1], top(stack));
 
-  if (stack->next != NULL) {
-    TEST_ASSERT_EQUAL_PTR(&testInts[1], stack->next->data);
-    if (stack->next->next != NULL) {
-      TEST_ASSERT_EQUAL_PTR(&testInts[0], stack->next->next->data);
-    }
-  }
+  stack = pop(stack);
+  TEST_ASSERT_EQUAL_PTR(&testInts[0], top(stack));
 
-  StackNode *last = stack;
-  while (last->next != NULL) {
-    last = last->next;
-  }
-  TEST_ASSERT_NULL(last->next);
+  stack = pop(stack); // bei leerem Stack wird NULL zurückgegeben
+  TEST_ASSERT_NULL(stack);
 }
 
 void test_clearStack(void) {