add no formular detected Test for getNumber Function

test/test_inputHandling.c

@@ -7,9 +7,11 @@ char halloWelt[]="Hallo Welt";
 char halloWelt2[]="Hallo  Welt";
 char halloWelt3[]="Ha  llo  W el t ";
 char halloWelt4[]="Ha\n\nllo \r W el\r\r t ";
+calc_op formula = {0};
 
 void setUp(void)
 {
+  formula.functionsType = opNotSupported;
 }
 
 void tearDown(void)
@@ -85,4 +87,10 @@ void test_inputHandling_findEmptyFunctionType(void)
     TEST_ASSERT_TRUE(opEmpty == type);
 }
 
+void test_inputHandling_getNumbersNoFormular(void)
+{
+    char* pnt = NULL;
+    pnt = getNumbers(halloWelt, 10, &formula);
+    TEST_ASSERT_NULL(pnt);
+}
 #endif // TEST