diff --git a/test/test_StringManipulation.c b/test/test_StringManipulation.c
index 6e0e9eb..678a7d4 100644
--- a/test/test_StringManipulation.c
+++ b/test/test_StringManipulation.c
@@ -6,14 +6,21 @@
 
 void test_everyCharacterIsDigit()
 {
-	/*test values*/
-	char str_1[] = "1234", str_2[] = "hey123", str_3[] = "good evening!", str_4[] = "äöü";
-	
-	/*assertions*/
-	TEST_ASSERT_TRUE(everyCharacterIsDigit(str_1));
-	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_2));
-	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_3));
-	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_4));
+	/*test block 1*/
+	char *expectTrue[] = {"0","11","222","3333","4444","134132","12352378","12847273","1237873","9992475","987232","34723873278","578347823783","758378723","44293884742",
+	"3184123872873","8912892383","18282828","55757575757528282","123823883282383282575757283832","99999999999999999999999999999999999","128321378","81293982139823","21412323"
+	"575757575754646464648383838383","1298557648298219821398129381928391283918238912831283928391283129839281391283918238912391238912839182391239857517828"};
+	int length = sizeof(expectTrue)/sizeof(char *);
+	for(int i=0;i<length;++i){
+		TEST_ASSERT_TRUE(everyCharacterIsDigit(expectTrue[i]));
+	}
+
+	/*test block 2*/
+	char *expectFalse[] = {"a","bcd","dhdd","3asad87","askj","nxbdj","489sjk2kj","kjasjkd38234","aksjlas","bcbc838ch","akjsjkdjkq919191","askjsdakj492","kasjcncn","9919a19","cbajsh","askjajkd","ajshdasjh","jyxhyxjchyx","kasjdakj","vbvb88888888888888828282828282828askjh"};
+	length = sizeof(expectFalse)/sizeof(char *);
+	for(int i=0;i<length;++i){
+		TEST_ASSERT_FALSE(everyCharacterIsDigit(expectFalse[i]));
+	}
 }
 
 void test_power()