BinTree fertig gemacht inclusive unity tests

bintree.c

@@ -12,7 +12,36 @@
 // if isDuplicate is NULL, otherwise ignores duplicates and sets isDuplicate to 1 (or to 0 if a new entry is added).
 TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
 {
+    if(root == NULL)
+    {
+        TreeNode *newNode = malloc(sizeof(TreeNode));
+        newNode->data = malloc(dataSize);
+        memcpy(newNode->data, data, dataSize);
+        newNode->left = NULL;
+        newNode->right = NULL;
 
+        if(isDuplicate != NULL)
+            *isDuplicate = 0;
+
+        return newNode;
+    }
+    else
+    {
+        int cmpResult = compareFct(data, root->data);
+
+        if(cmpResult < 0)
+            root->left = addToTree(root->left, data, dataSize, compareFct, isDuplicate);
+        else if(cmpResult > 0)
+            root->right = addToTree(root->right, data, dataSize, compareFct, isDuplicate);
+        else
+        {
+            // Duplicate found
+            if(isDuplicate != NULL)
+                *isDuplicate = 1;
+        }
+
+        return root;
+    }
 }
 
 // Iterates over the tree given by root. Follows the usage of strtok. If tree is NULL, the next entry of the last tree given is returned in ordering direction.
@@ -20,17 +49,56 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFc
 // push the top node and push all its left nodes.
 void *nextTreeData(TreeNode *root)
 {
+    static StackNode *stack = NULL;
 
+    if (root != NULL)
+    {
+        clearStack(stack);
+        stack = NULL;
+
+        TreeNode *current = root;
+        while (current != NULL)
+        {
+            stack = push(stack, current);
+            current = current->left;
+        }
+    }
+
+    if (stack == NULL)
+        return NULL;
+
+    TreeNode *node = (TreeNode *)top(stack);
+    stack = pop(stack);
+
+    void *data = node->data;
+
+    TreeNode *current = node->right;
+    while (current != NULL)
+    {
+        stack = push(stack, current);
+        current = current->left;
+    }
+
+    return data;
 }
 
+
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
-
+    if(root != NULL)
+    {
+        clearTree(root->left);
+        clearTree(root->right);
+        free(root->data);
+        free(root);
+    }
 }
 
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
-
+    if(root == NULL)
+        return 0;
+    return 1 + treeSize(root->left) + treeSize(root->right);
 }

bintreeTests.c

@@ -0,0 +1,122 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "unity.h"
+#include "bintree.h"
+
+/* ---------- Helper ---------- */
+
+int compareInt(const void *a, const void *b)
+{
+    int ia = *(const int *)a;
+    int ib = *(const int *)b;
+    return ia - ib;
+}
+
+void setUp(void){}
+void tearDown(void){}
+
+/* ---------- addToTree ---------- */
+
+void test_addToTree_adds_first_element(void)
+{
+    TreeNode *root = NULL;
+    int value = 5;
+    int isDup = -1;
+
+    root = addToTree(root, &value, sizeof(int), compareInt, &isDup);
+
+    TEST_ASSERT_NOT_NULL(root);
+    TEST_ASSERT_EQUAL_INT(0, isDup);
+    TEST_ASSERT_EQUAL_INT(1, treeSize(root));
+
+    clearTree(root);
+}
+
+void test_addToTree_detects_duplicate(void)
+{
+    TreeNode *root = NULL;
+    int value = 5;
+    int isDup = -1;
+
+    root = addToTree(root, &value, sizeof(int), compareInt, &isDup);
+    root = addToTree(root, &value, sizeof(int), compareInt, &isDup);
+
+    TEST_ASSERT_EQUAL_INT(1, isDup);
+    TEST_ASSERT_EQUAL_INT(1, treeSize(root));
+
+    clearTree(root);
+}
+
+/* ---------- treeSize ---------- */
+
+void test_treeSize_counts_multiple_elements(void)
+{
+    TreeNode *root = NULL;
+    int values[] = {5, 2, 8, 1, 3};
+
+    for (int i = 0; i < 5; i++)
+        root = addToTree(root, &values[i], sizeof(int), compareInt, NULL);
+
+    TEST_ASSERT_EQUAL_UINT(5, treeSize(root));
+
+    clearTree(root);
+}
+
+/* ---------- nextTreeData ---------- */
+
+void test_nextTreeData_returns_sorted_order(void)
+{
+    TreeNode *root = NULL;
+    int values[] = {5, 2, 8, 1, 3};
+
+    for (int i = 0; i < 5; i++)
+        root = addToTree(root, &values[i], sizeof(int), compareInt, NULL);
+
+    int expected[] = {1, 2, 3, 5, 8};
+
+    int *val;
+
+    /* erster Aufruf initialisiert den Iterator */
+    val = (int *)nextTreeData(root);
+    TEST_ASSERT_NOT_NULL(val);
+    TEST_ASSERT_EQUAL_INT(expected[0], *val);
+
+    /* weitere Aufrufe liefern die nächsten Elemente */
+    for (int i = 1; i < 5; i++)
+    {
+        val = (int *)nextTreeData(NULL);
+        TEST_ASSERT_NOT_NULL(val);
+        TEST_ASSERT_EQUAL_INT(expected[i], *val);
+    }
+
+    /* danach muss NULL kommen */
+    TEST_ASSERT_NULL(nextTreeData(NULL));
+
+    clearTree(root);
+}
+
+/* ---------- clearTree ---------- */
+
+void test_clearTree_on_empty_tree_does_not_crash(void)
+{
+    clearTree(NULL);
+    TEST_PASS();
+}
+
+/* ---------- MAIN ---------- */
+
+int main(void)
+{
+    UNITY_BEGIN();
+
+    RUN_TEST(test_addToTree_adds_first_element);
+    RUN_TEST(test_addToTree_detects_duplicate);
+
+    RUN_TEST(test_treeSize_counts_multiple_elements);
+
+    RUN_TEST(test_nextTreeData_returns_sorted_order);
+
+    RUN_TEST(test_clearTree_on_empty_tree_does_not_crash);
+
+    return UNITY_END();
+}

makefile

@@ -29,21 +29,37 @@ program_obj_files = stack.o bintree.o numbers.o timer.o highscore.o
 doble : main.o $(program_obj_files)
 	$(CC) $(FLAGS) $^ -o doble
 
-$(program_obj_filesobj_files): %.o: %.c
-	$(CC) -c $(FLAGS) $^ -o $@
+# --------------------------
+# Objektdateien kompilieren
+# --------------------------
+%.o: %.c
+	$(CC) -c $(FLAGS) $< -o $@
 
 # --------------------------
 # Unit Tests
 # --------------------------
-unitTests:
-	echo "needs to be implemented"
+
+numbersTests: numbers.o numbersTests.c $(unityfolder)/unity.c
+	$(CC) $(FLAGS) -I$(unityfolder) \
+	    -o runNumbersTests \
+	    numbersTests.c numbers.o $(unityfolder)/unity.c
+
+stackTests: stack.o stackTests.c $(unityfolder)/unity.c
+	$(CC) $(FLAGS) -I$(unityfolder) \
+	    -o runStackTests \
+	    stackTests.c stack.o $(unityfolder)/unity.c
+
+bintreeTests: bintree.o stack.o bintreeTests.c $(unityfolder)/unity.c
+	$(CC) $(FLAGS) -I$(unityfolder) \
+	    -o runBintreeTests \
+	    bintreeTests.c bintree.o stack.o $(unityfolder)/unity.c
 
 # --------------------------
 # Clean
 # --------------------------
 clean:
-ifeq ($(OS),Windows_NT)
-	del /f *.o doble
+ifeq ($(OS),!Windows_NT)
+	del /f *.o doble *.exe
 else
-	rm -f *.o doble
-endif
+	rm -f *.o doble run*Tests*
+endif

numbers.c

@@ -2,8 +2,8 @@
 #include <stdio.h>
 #include <time.h>
 #include <string.h>
+#include <stdbool.h>
 #include "numbers.h"
-#include "bintree.h"
 
 //TODO: getDuplicate und createNumbers implementieren
 /*  *   * Erzeugen eines Arrays mit der vom Nutzer eingegebenen Anzahl an Zufallszahlen.
@@ -16,11 +16,83 @@
 // creating random numbers.
 unsigned int *createNumbers(unsigned int len)
 {
+    if (len < 2) {
+        // Mindestens zwei Elemente nötig, damit ein Duplikat existiert
+        return NULL;
+    }
 
+    unsigned int *numbers = malloc(len * sizeof(unsigned int));
+    if (!numbers) return NULL;
+
+    bool *used = calloc(2 * len + 1, sizeof(bool));
+    if (!used) {
+        free(numbers);
+        return NULL;
+    }
+
+    static int initialized = 0;
+    if (!initialized) {
+        srand((unsigned int)time(NULL));
+        initialized = 1;
+    }
+
+    // Einzigartige Zufallszahlen generieren
+    for (unsigned int i = 0; i < len - 1; ) {
+        unsigned int num = (rand() % (2 * len)) + 1;
+        if (!used[num]) {
+            used[num] = true;
+            numbers[i++] = num;
+        }
+    }
+
+    // Eine der Zahlen duplizieren
+    unsigned int duplicateIndex = rand() % (len - 1);
+    numbers[len - 1] = numbers[duplicateIndex];
+
+    // Fisher–Yates shuffle
+    for (unsigned int i = len - 1; i > 0; i--) {
+        unsigned int j = rand() % (i + 1);
+        unsigned int tmp = numbers[i];
+        numbers[i] = numbers[j];
+        numbers[j] = tmp;
+    }
+
+    free(used);
+    return numbers;
 }
 
 // Returns only the only number in numbers which is present twice. Returns zero on errors.
 unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
 {
+    if (numbers == NULL || len < 2) {
+        return 0;
+    }
 
+    unsigned int *sortedNumbers = malloc(len * sizeof(unsigned int));
+    if (sortedNumbers == NULL) {
+        return 0;
+    }
+    memcpy(sortedNumbers, numbers, len * sizeof(unsigned int));
+
+    // Einfacher bubble sort
+    for (unsigned int i = 0; i < len - 1; i++) {
+        for (unsigned int j = 0; j < len - i - 1; j++) {
+            if (sortedNumbers[j] > sortedNumbers[j + 1]) {
+                unsigned int temp = sortedNumbers[j];
+                sortedNumbers[j] = sortedNumbers[j + 1];
+                sortedNumbers[j + 1] = temp;
+            }
+        }
+    }
+
+    unsigned int duplicate = 0;
+    for (unsigned int i = 0; i < len - 1; i++) {
+        if (sortedNumbers[i] == sortedNumbers[i + 1]) {
+            duplicate = sortedNumbers[i];
+            break;
+        }
+    }
+
+    free(sortedNumbers);
+    return duplicate;
 }

numbersTests.c

@@ -0,0 +1,179 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "numbers.h"
+#include "unity.h"
+#include <stdbool.h>
+
+//Initialisierung
+void setUp(void){}
+void tearDown(void){}
+
+// Hilfsfunktion: zählt Vorkommen eines Werts
+static unsigned int countOccurrences(unsigned int* arr, unsigned int n, unsigned int value)
+{
+    unsigned int count = 0;
+    for (unsigned int i = 0; i < n; i++)
+        if (arr[i] == value)
+            count++;
+    return count;
+}
+
+// ---------------------------------------------------------------------------
+// Test 1: createNumbers erzeugt ein Array der richtigen Größe
+// ---------------------------------------------------------------------------
+void test_createNumbers_returns_valid_array(void)
+{
+    unsigned int n = 50;
+    unsigned int* arr = createNumbers(n);
+
+    TEST_ASSERT_NOT_NULL(arr);
+
+    // Ein paar Werte prüfen (dürfen alles sein, nur kein Segfault)
+    for (unsigned int i = 0; i < n; i++)
+        TEST_ASSERT_TRUE(arr[i] >= 0);
+
+    free(arr);
+}
+
+// ---------------------------------------------------------------------------
+// Test 2: createNumbers erzeugt GENAU EIN Duplikat
+// ---------------------------------------------------------------------------
+void test_createNumbers_contains_exactly_one_duplicate(void)
+{
+    unsigned int n = 50;
+    unsigned int* arr = createNumbers(n);
+
+    TEST_ASSERT_NOT_NULL(arr);
+
+    // zähle wie viele Werte doppelt vorkommen
+    unsigned int duplicateValue = 0;
+    unsigned int totalDuplicateAppearances = 0;
+
+    for (unsigned int i = 0; i < n; i++)
+    {
+        unsigned int c = countOccurrences(arr, n, arr[i]);
+        if (c == 2)   // genau zweimal → Bestandteil des Duplikats
+        {
+            duplicateValue = arr[i];
+            totalDuplicateAppearances++;
+        }
+    }
+
+    // Wenn genau eine Zahl doppelt vorkommt,
+    // finden wir sie zweimal → totalDuplicateAppearances == 2
+    TEST_ASSERT_EQUAL_UINT(2, totalDuplicateAppearances);
+
+    free(arr);
+}
+// ---------------------------------------------------------------------------
+// Test 3: getDuplicated findet genau die richtige doppelte Zahl
+// ---------------------------------------------------------------------------
+void test_getDuplicated_finds_correct_duplicate(void)
+{
+    unsigned int n = 50;
+    unsigned int* arr = createNumbers(n);
+    TEST_ASSERT_NOT_NULL(arr);
+
+    // Ermittle das Duplikat manuell
+    unsigned int expected = 0;
+
+    for (unsigned int i = 0; i < n; i++)
+    {
+        if (countOccurrences(arr, n, arr[i]) == 2)
+        {
+            expected = arr[i];
+            break;
+        }
+    }
+
+    unsigned int result = getDuplicate(arr, n);
+
+    TEST_ASSERT_EQUAL_UINT(expected, result);
+
+    free(arr);
+}
+
+// ---------------------------------------------------------------------------
+// Hilfsfunktion: prüft ob createNumbers einen Fehlerzustand signalisiert
+// Du kannst diese später anpassen (z.B. wenn Fehler-Flags eingebaut werden)
+// ---------------------------------------------------------------------------
+static bool did_createNumbers_fail(unsigned int* ptr)
+{
+    return (ptr == NULL);   // aktuell: NULL bedeutet Fehler
+}
+
+
+// ---------------------------------------------------------------------------
+// Test: createNumbers soll bei count < 2 fehlschlagen
+// ---------------------------------------------------------------------------
+void test_createNumbers_rejects_too_small_counts(void)
+{
+    unsigned int* r1 = createNumbers(0);
+    unsigned int* r2 = createNumbers(1);
+
+    TEST_ASSERT_TRUE(did_createNumbers_fail(r1));
+    TEST_ASSERT_TRUE(did_createNumbers_fail(r2));
+}
+
+
+// ---------------------------------------------------------------------------
+// Test: createNumbers(2) soll funktionieren (Minimum gültiger Input)
+// ---------------------------------------------------------------------------
+void test_createNumbers_with_two_elements_is_valid(void)
+{
+    unsigned int* arr = createNumbers(2);
+
+    TEST_ASSERT_FALSE(did_createNumbers_fail(arr));
+    TEST_ASSERT_NOT_NULL(arr);
+
+    // should contain exactly one duplicate
+    unsigned int c0 = countOccurrences(arr, 2, arr[0]);
+    unsigned int c1 = countOccurrences(arr, 2, arr[1]);
+
+    TEST_ASSERT_TRUE((c0 == 2) || (c1 == 2));
+
+    free(arr);
+}
+
+
+// ---------------------------------------------------------------------------
+// Test: getDuplicate() soll Fehler erkennen, wenn arr == NULL
+// ---------------------------------------------------------------------------
+void test_getDuplicate_handles_null_pointer(void)
+{
+    unsigned int result = getDuplicate(NULL, 10);
+// Erwartung: Fehlerzustand → aktuell vermutlich 0 oder UINT_MAX
+    // Wir prüfen nur, DASS es ein Fehler ist:
+    TEST_ASSERT_TRUE(result == 0 || result == UINT_MAX);
+}
+
+
+// ---------------------------------------------------------------------------
+// Test: getDuplicated) soll Fehler erkennen, wenn count < 2
+// ---------------------------------------------------------------------------
+void test_getDuplicate_handles_invalid_count(void)
+{
+    unsigned int dummy[1] = { 5 };
+
+    unsigned int result = getDuplicate(dummy, 1);
+
+    TEST_ASSERT_TRUE(result == 0 || result == UINT_MAX);
+}
+
+// ---------------------------------------------------------------------------
+// main() für Unity
+// ---------------------------------------------------------------------------
+int main(void)
+{
+    UNITY_BEGIN();
+
+    RUN_TEST(test_createNumbers_returns_valid_array);
+    RUN_TEST(test_createNumbers_contains_exactly_one_duplicate);
+    RUN_TEST(test_getDuplicated_finds_correct_duplicate);
+    RUN_TEST(test_createNumbers_rejects_too_small_counts);
+    RUN_TEST(test_createNumbers_with_two_elements_is_valid);
+    RUN_TEST(test_getDuplicate_handles_null_pointer);
+    RUN_TEST(test_getDuplicate_handles_invalid_count);
+
+    return UNITY_END();
+}

stack.c

@@ -10,24 +10,38 @@
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data)
 {
-
+    StackNode *top = malloc(sizeof(StackNode));
+    top->next= stack;
+    top->data= data;
+    return top;
 }
 
 // Deletes the top element of the stack (latest added element) and releases its memory. (Pointer to data has to be
 // freed by caller.)
 StackNode *pop(StackNode *stack)
 {
-
+    if(stack == NULL)
+        return NULL;
+    StackNode *next = stack->next;
+    free(stack);
+    return next;
 }
 
 // Returns the data of the top element.
 void *top(StackNode *stack)
 {
-
+    if(stack == NULL)
+        return NULL;
+    return stack->data;
 }
 
 // Clears stack and releases all memory.
 void clearStack(StackNode *stack)
 {
-
-}
+    while(stack != NULL)
+    {
+        StackNode *next = stack->next;
+        free(stack);
+        stack = next;
+    }
+}

stack.h

@@ -8,6 +8,11 @@ The latest element is taken from the stack. */
 #include <stdlib.h>
 
 //TODO: passenden Datentyp als struct anlegen
+typedef struct StackNode
+{
+    void *data;
+    struct StackNode *next;
+}StackNode;
 
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);

stackTests.c

@@ -0,0 +1,130 @@
+/*#include <stdio.h>
+#include <stdlib.h>
+#include "stack.h"
+#include "unity.h"
+
+//Initialisierung
+void setUp(void){}
+void tearDown(void){}
+
+void test_push_created_new_stacknode(void)
+{
+    int testdata1 = 111;
+    StackNode test = {&testdata1,NULL};
+    int testdata2 = 222;
+
+    StackNode *test1 = push(&test,&testdata2);
+    TEST_ASSERT_NOT_NULL(test1);
+    TEST_ASSERT_EQUAL_PTR(&testdata2,test1->data);
+    TEST_ASSERT_EQUAL_PTR(&test,test1->next);
+}
+
+int main(void)
+{
+    UNITY_BEGIN();
+
+    RUN_TEST(test_push_created_new_stacknode);
+    return UNITY_END();
+}*/
+#include <stdio.h>
+#include <stdlib.h>
+#include "stack.h"
+#include "unity.h"
+
+void setUp(void){}
+void tearDown(void){}
+
+/* ---------------- PUSH ---------------- */
+
+void test_push_created_new_stacknode(void)
+{
+    int testdata1 = 111;
+    StackNode test = {&testdata1,NULL};
+    int testdata2 = 222;
+
+    StackNode *test1 = push(&test,&testdata2);
+    TEST_ASSERT_NOT_NULL(test1);
+    TEST_ASSERT_EQUAL_PTR(&testdata2,test1->data);
+    TEST_ASSERT_EQUAL_PTR(&test,test1->next);
+}
+
+/* ---------------- TOP ---------------- */
+
+void test_top_on_empty_stack_returns_null(void)
+{
+    TEST_ASSERT_NULL(top(NULL));
+}
+
+void test_top_returns_top_element(void)
+{
+    int data = 42;
+    StackNode node = {&data, NULL};
+
+    TEST_ASSERT_EQUAL_PTR(&data, top(&node));
+}
+
+/* ---------------- POP ---------------- */
+
+void test_pop_on_empty_stack_returns_null(void)
+{
+    TEST_ASSERT_NULL(pop(NULL));
+}
+
+void test_pop_removes_top_element(void)
+{
+    int d1 = 1;
+    int d2 = 2;
+
+    StackNode *s = NULL;
+    s = push(s, &d1);
+    s = push(s, &d2);
+
+    StackNode *newTop = pop(s);
+
+    TEST_ASSERT_NOT_NULL(newTop);
+    TEST_ASSERT_EQUAL_PTR(&d1, newTop->data);
+
+    clearStack(newTop); // Speicher aufräumen
+}
+
+/* ---------------- CLEAR ---------------- */
+
+void test_clearStack_on_empty_stack_does_not_crash(void)
+{
+    clearStack(NULL);
+    TEST_PASS(); // Test besteht, wenn kein Crash
+}
+
+void test_clearStack_clears_multiple_elements(void)
+{
+    int d1 = 1, d2 = 2, d3 = 3;
+
+    StackNode *s = NULL;
+    s = push(s, &d1);
+    s = push(s, &d2);
+    s = push(s, &d3);
+
+    clearStack(s);
+
+    TEST_PASS(); // kein Crash = bestanden
+}
+
+/* ---------------- MAIN ---------------- */
+
+int main(void)
+{
+    UNITY_BEGIN();
+
+    RUN_TEST(test_push_created_new_stacknode);
+
+    RUN_TEST(test_top_on_empty_stack_returns_null);
+    RUN_TEST(test_top_returns_top_element);
+
+    RUN_TEST(test_pop_on_empty_stack_returns_null);
+    RUN_TEST(test_pop_removes_top_element);
+
+    RUN_TEST(test_clearStack_on_empty_stack_does_not_crash);
+    RUN_TEST(test_clearStack_clears_multiple_elements);
+
+    return UNITY_END();
+}