test: fix buffer overflow in String::getBytes test

tttapa · tttapa · commit 4db89597b09f · 2023-07-31T20:49:18.000+02:00
diff --git a/test/src/String/test_characterAccessFunc.cpp b/test/src/String/test_characterAccessFunc.cpp
@@ -45,10 +45,11 @@ TEST_CASE ("Testing String::getBytes(unsigned char, unsigned int, unsigned int)"
 
   WHEN("Valid operation") {
     arduino::String str("Hello");
-    unsigned char buf[2];
+    unsigned char buf[3];
     str.getBytes(buf, 5, 3);
     REQUIRE(buf[0] == 'l');
     REQUIRE(buf[1] == 'o');
+    REQUIRE(buf[2] == '\0');
   }
 }
 
