Fixed TestRandomInteger test

utils/coreutils_test.go

@@ -1304,7 +1304,10 @@ func TestRandomInteger(t *testing.T) {
 	if a == b && b == c {
 		t.Errorf("same result over 3 attempts")
 	}
-	if a == 100 || b == 100 || c == 100 {
-		t.Errorf("one of the numbers equals the max limit")
+	if a >= 100 || b >= 100 || c >= 100 {
+		t.Errorf("one of the numbers equals the (/are above) max limit")
+	}
+	if a < 0 || b < 0 || c < 0 {
+		t.Errorf("one of the numbers are below min limit")
 	}
 }