SnakeYAML Debug (Java)

Java alternative to the Python Mako debug round. Candidates clone a SnakeYAML-style repo, run failing tests, and locate fixes in YAML parsing internals. Requirements Java debug round on a SnakeYAML-style repo. Setup mirrors the Mako round (clone, install deps, run failing tests in your IDE). One report's bugs included: an On literal failing to convert to boolean, and a CSV-parsing path that throws during YAML parsing. A Java report lists two concrete bugs: flag: on failing to parse (the YAML 1.1 on boolean literal), and CSV parsing that drops the surrounding quotes from quoted fields. Notes The Java variant is the standard Mako substitute when candidates code in Java. One report explicitly checked whether Mako still ships in Java; it does not in recent rounds. Reports are thin — community knowledge for SnakeYAML lags far behind Mako. Expect the interviewer to be familiar even if you are not. SnakeYAML is a YAML 1.1 processor for the JVM (Java 8+), Apache-2.0 licensed. Active development happens on Bitbucket with a GitHub mirror; both expose the same module layout. The 1.1 spec is what causes On / Off / Yes / No to round-trip as booleans — a recurring class of bugs in this round. Preparation Walk through SnakeYAML's Constructor and Resolver classes with an IDE debugger before the interview. Be familiar with how YAML 1.1 vs 1.2 handle On, Off, Yes, No as booleans — that is a frequent source of "this should be a string" bugs. Practice running a Java project's tests from an IDE with breakpoints set inside library code.