numbers and tests finished

makefile

@@ -35,19 +35,26 @@ $(program_obj_filesobj_files): %.o: %.c
 # --------------------------
 # Unit Tests
 # --------------------------
-test_sources = test_stack.c stack.c
-test_objects = $(test_sources:.c=.o)
+stack_test_sources = test_stack.c stack.c 
+stack_test_objects = $(stack_test_sources:.c=.o)
 
-test_runner: $(test_objects)
+numbers_test_sources = test_numbers.c numbers.c
+numbers_test_objects = $(numbers_test_sources:.c=.o)
+
+stack_test_runner: $(stack_test_objects)
 	$(CC) $(FLAGS) $^ -o $@
 
-unitTests: test_runner
+numbers_test_runner: $(numbers_test_objects)
+	$(CC) $(FLAGS) $^ -o $@
+
+unitTests: stack_test_runner numbers_test_runner
 	@echo "============================="
-	@echo "Running Stack Unit Tests..."
+	@echo "Running Unit Tests..."
 	@echo "============================="
-	./test_runner
+	./stack_test_runner
+	./numbers_test_runner
 	@echo "============================="
-	@echo "Stack Unit Tests Finished."
+	@echo "Unit Tests Finished."
 	@echo "============================="
 
 

numbers.c

@@ -100,7 +100,7 @@ unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
 
 	if (numbers == NULL)
 	{
-		fprintf(stderr, "Fehler! Das übergebene Array ist leer!");
+		fprintf(stderr, "Fehler! Das übergebene Array ist leer!\n");
 		return duplicate;
 	}
 

test_numbers.c

@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "numbers.h"
+
+void test_empty_function(void)
+{
+    unsigned int len1 = 1;
+    unsigned int len2 = 5;
+    unsigned int *null_array = NULL;
+    unsigned int array[] = {1, 2, 3, 4, 5};
+    unsigned int *array_ptr = array;
+
+    unsigned int *create_num = createNumbers(len1);
+    if (create_num == NULL)
+        printf("Test on invalid lenght of array: SUCCESS!\n");
+
+    else 
+    {
+        printf("Test on invalid lenght of array: FAILED! Expected: NULL, Was: %p\n", create_num);
+        free(create_num);
+    }
+    
+    unsigned int duplicate = getDuplicate(null_array, len2);
+
+    if (duplicate == 0)
+        printf("Test on invalid array: SUCESS!\n");
+
+    else 
+        printf("Test on invalid array: FAILED! Expected: 0, WAS: %u\n", duplicate);
+
+    unsigned int duplicate2 = getDuplicate(array_ptr, len1);
+
+    if (duplicate2 == 0)
+        printf("Test on invalid lenght of array: SUCESS!\n");
+    
+    else 
+        printf("Test on invalid lenght of array: FAILED, Expected: 0, WAS: %u\n", duplicate2);
+}
+
+void test_array(void)
+{
+    unsigned int len = 10;
+    unsigned int *array = NULL;
+    
+    array = createNumbers(len);
+
+    if (array == NULL)
+        printf("Test on valid lenght of array: FAILED! Expected array greater than 0, Was: NULL\n");
+
+    else printf("Test on valid lenght of array: SUCESS!\n");
+
+    unsigned int test_array_dup[] = {1, 2, 3, 4, 5, 2, 6, 7, 8, 9};
+    unsigned int test_len = 10;
+    unsigned int duplicate = 2;
+
+    unsigned int duplicate_found = getDuplicate(test_array_dup, test_len);
+    
+    if (duplicate_found != duplicate)
+        printf("Test on valid lenght of array: FAILED! Expected %u, Was: %u\n", duplicate, duplicate_found);
+
+    else printf("Test on valid lenght of array: SUCESS!, Duplicate value: %d\n", duplicate);
+
+    free(array);
+}
+
+int main(void)
+{
+    test_empty_function();
+    printf("\n");
+    test_array();
+    return EXIT_SUCCESS;
+}