*** Test with mr_malloc/mr_free pointer is NOT null pointer is null *** Test with mr_asprintf/mr_free Result: Chain of trust *** Test with mr_strcat Result: Another Chain of trust *** Test2 with mr_strcat Result: Another Chain of distrust *** Test with mr_getline/mr_free 1st Result: root:x:0:0:root:/root:/bin/bash 2nd Result: bin:x:1:1:bin:/bin:/bin/sh 3rd Result: another line *** Test with NULL pointer is null