scenario

Define and test CLI behavior scenarios under controlled terminal conditions.

scenario provides infrastructure for testing CLI applications across different terminal environments — with or without a TTY, at various terminal widths, with or without color support.

Features

• Snapshot testing of CLI stdout, stderr, and exit codes via insta
• PTY simulation via portable-pty — your binary sees a real terminal
• Terminal dimension control — test narrow (40 cols), standard (80), wide (200)
• Color/no-color testing — verify both human and machine output
• Interactive session testing — send input, expect output patterns