diff --git a/test/test_Umgebung.c b/test/test_Umgebung.c
new file mode 100644
index 0000000..de730c5
--- /dev/null
+++ b/test/test_Umgebung.c
@@ -0,0 +1,24 @@
+#include "unity.h"
+#include "cmock.h"
+#include <Umgebung.h>
+#include <stdlib.h>
+ void setUp(void)
+ { 
+ }
+ 
+ void tearDown(void)
+ {
+ }
+ void test_Umgebung_RealU(void){
+
+ int realU[N][N];
+    realU[14][15] = 0;
+    int result = RealU(realU);
+    
+    TEST_ASSERT_EQUAL_INT(1, result);
+
+
+}
+
+
+