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This is an object-oriented Ruby project that models a simple Todo list domain. It includes a Todo class (a single task with a title, optional description, done/undone state, and an optional due date) and a TodoList class (a collection object that supports common list behaviors like add/remove, iteration, selection, and “mark done” operations). The project is backed by an automated Minitest suite that verifies behavior across the public API, including error handling, output formatting, and collection-style methods.

Skills demonstrated:

•     Ruby
•     Object-oriented programming (domain modeling with Todo + TodoList)
•     Encapsulation and public interfaces (methods like done!, mark_done_at, find_by_title)
•     Custom collection behavior (iteration via each, filtering via select)
•     Testing with Minitest (assertions, setup, edge cases, exception testing)
•     Error handling (raising TypeError, using fetch to raise IndexError)
•     String formatting and display logic (custom to_s output for both items and lists)
•     Dependency/tooling familiarity (Bundler, external gem usage for date formatting via stamp)