tui-viewer

Automated visual regression testing for a terminal UI involves capturing high-fidelity screenshots and programmatically analyzing colors, text, and spatial layout to verify correct rendering. This Skill uses VHS for deterministic captures and SVG or text analysis to validate themes and responsive behavior across iterations.

Yes, you can verify TUI layout and colors programmatically across different frameworks. This Skill provides a platform-agnostic approach that works with any language outputting terminal UI, capturing screenshots and analyzing SVG or text contents to validate visual fidelity and spatial relationships.

To use VHS for deterministic TUI screenshots, you create a VHS tape to reach a target screen and run it to produce SVG or text outputs. You then extend the process with verification scripts to validate the captured colors, text, and layout.

To prevent dangling background processes during TUI capture automation, you must enforce robust cleanup patterns after running VHS tapes and PTY-based workflows. This Skill includes specific cleanup mechanisms to ensure background terminal processes are safely terminated following visual verification.

Yes, this visual testing approach supports validating responsive behavior across multiple TUI sizes. It enables multi-size and multi-theme validation by capturing high-fidelity screenshots and analyzing the rendered layout to ensure TUIs adapt correctly across diverse terminal environments.