From be37b3ff21e81c6b02d710be155c8ab21b415bf4 Mon Sep 17 00:00:00 2001
From: Alexei <kelleral99467@th-nuernberg.de>
Date: Thu, 11 Dec 2025 11:15:44 +0100
Subject: [PATCH] =?UTF-8?q?Unity=20Tests=20f=C3=BCr=20stack.c=20geschriebe?=
 =?UTF-8?q?n?=
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---
 test_stack.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 test_stack.c

diff --git a/test_stack.c b/test_stack.c
new file mode 100644
index 0000000..8cef152
--- /dev/null
+++ b/test_stack.c
@@ -0,0 +1,92 @@
+#include <stdlib.h>
+#include "stack.h"
+#include "unity.h"
+
+void test_push_and_top(void);
+
+void test_pop(void);
+
+void test_clearStack(void);
+
+void setUp(void) {}
+
+void tearDown(void) {}
+
+
+int main(void)
+{
+    UNITY_BEGIN();
+
+    RUN_TEST(test_push_and_top);
+    RUN_TEST(test_pop);
+    RUN_TEST(test_clearStack);
+
+    return UNITY_END();
+}
+
+void test_push_and_top(void)
+{
+    StackNode *stack = NULL;
+
+    int *a = malloc(sizeof(int)); *a = 10;
+    int *b = malloc(sizeof(int)); *b = 20;
+    int *c = malloc(sizeof(int)); *c = 30;
+
+    stack = push(stack, a);
+    stack = push(stack, b);
+    stack = push(stack, c);
+
+    TEST_ASSERT_EQUAL_INT(30, *(int*)top(stack));
+
+    // Cleanup data manually
+    void *data;
+    stack = pop(stack, &data); free(data);
+    stack = pop(stack, &data); free(data);
+    stack = pop(stack, &data); free(data);
+
+    TEST_ASSERT_NULL(stack);
+}
+
+void test_pop(void)
+{
+    StackNode *stack = NULL;
+
+    int *x = malloc(sizeof(int)); *x = 111;
+    int *y = malloc(sizeof(int)); *y = 222;
+
+    stack = push(stack, x);
+    stack = push(stack, y);
+
+    void *data;
+
+    stack = pop(stack, &data);
+    TEST_ASSERT_EQUAL_INT(222, *(int*)data);
+    free(data);
+
+    stack = pop(stack, &data);
+    TEST_ASSERT_EQUAL_INT(111, *(int*)data);
+    free(data);
+
+    TEST_ASSERT_NULL(stack);
+}
+
+void test_clearStack(void)
+{
+    StackNode *stack = NULL;
+
+    int *p = malloc(sizeof(int)); *p = 7;
+    int *q = malloc(sizeof(int)); *q = 8;
+
+    stack = push(stack, p);
+    stack = push(stack, q);
+
+    // Pop to free data first!
+    void *data;
+
+    stack = pop(stack, &data); free(data);
+    stack = pop(stack, &data); free(data);
+
+    clearStack(&stack);
+
+    TEST_ASSERT_NULL(stack);
+}
\ No newline at end of file