A simple implementation of a circular buffer using Test-Driven Development.

The circular buffer will be either a double-linked-list-like structure using an ADT.

The ADT will provide a clear interface for interacting with the buffer. Internal details like node structures, pointers, and sizes will be hidden.

The ADT will include functions to initialize and clean up the buffer safely. Cleanup must handle memory deallocation (if used) and ensure no resource leaks.

Add nodes at the head and tail. Remove nodes from the head, tail.

Nodes will be dynamically allocated and deallocated as needed. Memory allocation failures will be gracefully handled.

Handle operations like adding or removing nodes in an empty buffer or removing the only node in the buffer.

Provide comprehensive documentation for the ADT interface. Hide internal implementation details from users of the ADT.